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WebControl 8 PLC FW 3.3.19 PDF

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1. Send Copyright 2008 2014 CAI Networks Inc Figure 7 0 WebControl email setup Starting from the 3 2 15 firmware we allow user to configure less I O being report By default all I O status is reported in the email Copyright c 2008 2015 CAI Networks Inc 13 WebControl PLC User Guide Version 3 03 19 Please note that although there are 8 EMx and 8 URLy WebControl internally only has queue for up to four emails and eight URLs queued for sending If PLC logic made such a call too fast the newer email or WEBSET notification will overwrite the older ones in the queue Most email notification problems are either the configuration problem or the SMTP host rejected email In this version PLC firmware user can send a test email to see if the email notification working or not In earlier version user guide it was not clearly stated the email message ID is in format of EM1 through EM8 Using number only or other string may send out wrong email message WEBSET feature allows setting VAR value in another WebControl board or setting value on your web server if you have proper CGI code developed to take For example to set a value in ISY from Universal Devices you can configure the URL1 to IP_address port virtual host for example 192 168 2 222 80 www mydomain com Please note ISY99 using port 80 URI example rest vars set 1 15 Base64 encrypted username password Example YW
2. TSTGT VAR1 1500 IP 1 300 RAM2 If any of those delay not reached its result will be FALSE For SET VAR1 15000 IP1 VAR1 will not be set to IP1 value unless 15000 milliseconds 15seconds passed Copyright c 2008 2015 CAI Networks Inc 43 WebControl PLC User Guide Version 3 03 19 6 4 14 Example 14 WEBSET to get server reply From 3 02 16 version firmware WebControl allows PLC call WEBSET to do HTTP GET call to HTTP servers inside another WebControl or other devices or Apache or IIS servers The web server CGI code can process that information From 3 02 17 version firmware the web server can also send back to the WebControl a specially formatted string When WebControl received that string it will set an internal variable for user PLC code to reference Following is an example CGI code from apache server that will set the WebControl WSRPLY in the WebControl PLC program can base on that reply to turn on or off an I O bit or take any other action Because PLC code does not execute WEBSET call immediately rather WEBSET is on a scheduler called from queue user can not expect to get server reply immediately after WEBSET call The good practice would to check if the WSRPLY value is zero if that is zero the server reply has not fetched back yet Server must return a non zero value back If WSRPLY is non zero user PLC must read it into another variable and set it to zero so that it can be used for next WEBSET call In this sense i
3. read and write When read 0 means LED is off 1 means LED is on 2 means LED is heart beat When write valie is 0 1 or 2 PLED terminal will reflect the LED on or off state read only All 8 TTL as a byte Only in 8 02 17a firmware read write All 8 TTL output as a byte only in 3 02 17a firmware TSTxy and any SET command or command store value into 3 paramter with result zero or not read only When read 0 means no email waiting gt 3 means queue Se TN read only read and write read and write During power on firmware sets this pin to TTLO Copyright c 2008 2015 CAI Networks Inc 31 WebControl PLC User Guide Version 3 03 19 6 4 WebControl PLC Examples For best understanding how PLC logic working you can try to copy and paste the examples below into your WebControl PLC program screen to check them out Please note PLC logic will execute from START to END Then it will continue from START to END forever repeating If you last line of PLC code could skip next instruction like those TST instruction it might skip your first line when condition met Please do pay attention to it If you use CALLSUB to run subroutine after finishing the subroutine the logic will return back to where CALLSUB called and continue 6 4 1 Example 1 Set Output based on condition Control incubator heater connected to TTL output 1 If temperature T3 is less than 37 degree C turn ON the heater if T3 is greater or equal to 39 degree C tur
4. Copyright c 2008 2014 CAI Networks Inc 1 WebControl PLC User Guide Version 3 03 19 2 WebControl I O The current hardware version of WebControl is equipped with a number of inputs and outputs these are shown in below in figure 1 0 10 Base T Ethernet DAIBSGS IVI UN Od KZ Humidity Sensor Pin 1 GND Pin 2 Data in Pin 3 5V out Spare pin header Pin 1 SCL Pin 2 SDA Pin 3 5V Ora ERE RESET Pin 6 3V3 Pin 7 MISO 1 Wire Sensor Pin 4 GND 12345678 Pin 5 GND Pin 8 MOSI Pin 1 GND Pin 9 SCLK Pin 2 Data in Pin 3 5 0V out Pin 10 GPIO1 Pin 11 GND Pin 12 GPIO2 J12 AUX Pin 13 GND J9 87654321 Pin 14 PLED Pin 15 GND 9 10 11 12 13 14 15 16 lt EEEE L AUX Inputs Pin 1 Analog Input A1 DC Power Supply Input Pin 2 Analog Input A2 Pin 1 9Vdc in TTL Logic Level Output Port Pin 2 GND Pin 1 TTL1 0 p Pin 2 TTL2 o p Pin 3 TTL3 0 p Pin 4 TTL4 o p Pin 3 Analog Input A3 Pin 4 GND Pin 5 Digital Input 11 Pin 6 Digital Input D Pin 7 Digital Input I3 Pin 8 Digital Input 14 Pin 9 Digital Input I5 Pin 10 Digital Input I6 Pin 11 Digital Input I7 Pin 12 Digital Input 18 Pin 13 5Vdc Pin 14 Analog GND Pin 15 Analog GND Pin 16 Analog GND Pin 5 TTL5 0 p Pin 6 TTL6 o p Pin 7 TTL7 o p Pin 8 TTL8 o p Pin 9 GND Pin 10 GND
5. END Although this example works it has flaw Because all the pushbutton switches from market will not have clean instant ON or OFF they actually produce a bunch of ON and OFF signals when pushed If you use a scope to watch IP1 input line or OP3 output line you will see they are many ON and OFF pulses during pushing or releasing the button The better way to handle the case is like Example 10 later in this manual However if TTL OIP1 connected to a clean signal source this example does work well 6 4 4 Example 4 Send EMAIL Copyright c 2008 2015 CAI Networks Inc 33 WebControl PLC User Guide Version 3 03 19 To send email 1 when T3 T2 gt 20 degrees you would use START SUB T3 T2 RAMI TSTGE RAMI 200 EMAIL EMI END The above rule is a bit too simple because an email will constantly be generated while RAMI is greater than or equal to 200 20 degrees in this case To guard against that the following logic should be considered This implementation will only send one email when the temperature comparison beyond the range If you turn on heater or cooler instead of sending email similar consideration also should be excised START SET RAM2 0 LOOP SUB T3 T2 RAMI TSTGE RAMI 200 RAMI GOTO SEND SET RAM2 0 GOTO LOOP END SEND BNZ RAM2 LOOP SET RAM2 1 EMAIL EMI GOTO LOOP Please note in SEND portion of the code RAM2 is being checked if it is already 1 it will skip sending email Only when RAM2 0 an email
6. Figure 1 0 WebControl PCB inputs and outputs diagram 2 1 Power Supply Inputs The DC power supply input is the electrical supply to the board The recommended input voltage is 5 40V DC absolutely not exceed 40V Its current regirement changes depending on the supply voltage normally not less than 1A 2 2 TTL Output Port The TTL logic level output port has 8 TTL outputs that can each be set or cleared using web GUI command codes or by setting up a PLC using the available inputs variables and timers so that the particular output is set when a particular condition is met The maximum current that can be sourced or sinked by one of these outputs at a time is 20mA or 100mA for the whole board TTL 0 level defined as 0 2V and TTL 1 level is define 3 5V with TTL 0 almost OV and TTL 1 almost 5V depending on the Copyright c 2008 2014 CAI Networks Inc 2 WebControl PLC User Guide Version 3 03 19 load TTL output current is capable to drive standard solid state relay but will not be able to drive those coil based relays Be aware of the current requirements of the circuits loads attached to these outputs Damage will occur to the board if too much current is allowed 2 3 AUX Input Port The AUX input connector offers digital and analog inputs that can be monitored or programmed to set a single TTL output or several TTL outputs Three analog inputs are available each have an input range of 0 to 10Vdc Eight digital inputs are availab
7. QO CYEAR Current year QO CTS Current Total Seconds from 1 1 2000 WebControl timer variables are in one mili second minimum resolution However due to high priority I O like handling like 1 wire interrupt the accuracy of the timer may in the range greater than 10mS For how to program the timer functions please read Chapter 6 completely There are a few examples described how to program the WebControl PLC to act based on the input conditions and timer conditions 4 9 Direct Query System Inputs and Outputs To integrate with other servers directly query I O status maybe desirable Using wget command from other servers or computers user can directly query each input and output status The following HTTP commands are directly return the I O values geta1 cgi geta2 cgi geta3 cgi to query analog input values geth1 cgi to query the humidity sensor readings geti1 cgi geti2 cgi geti8 cgi to query each digital input values geto1 cgi geto2 cgi geto8 cgi to query each TTL output status gett1 cgi gett2 cgi gett8 cgi to query each temperature sensor value Copyright c 2008 2015 CAI Networks Inc 20 WebControl PLC User Guide Version 3 03 19 getts1 cgi getts2 cgi getts8 cgi to query each temperature sensor status getcounter cgi to query the counter value getfcounter cgi to query the frequency measurement per second value getall cgi
8. unsigned int strlen remote_host fp fwrite buffer 1 strlen buffer fp if remote _mac NULL fwrite remote_mac 1 unsigned int strlen remote_mac fp fwrite buffer 1 strlen buffer fp else fwrite buffer 1 strlen buffer fp SECC III IOC IOI TOI III I TI I II TI II I III IIS III IH put your logic here if MAC address not match then do what You can simply return with an error message CE e ER Re ERE Now you can process the data string send in by WebControl CRE ERRE ERE printf to push up to 10 bytes to WebControl SET_WC 2147483647 n printf close connection n fclose fp return 0 6 4 16 Example 13 12C Slave Device Communication WebControl 8 firmware from this version on supports I2C device communication through the top two spare pins with pull up resistors The first pin is CLK and second pin is DATA To communicate with the I2C device first to send command to the slave device what to do then send command to slave what to read back For example BOSCH digital pressure sensor BMP180 has air pressure measurement 16 19bit temperature measurement 16 bit To measure the pressure first send command to tell BMP180 start pressure measurement conversion After specified time for conversion then send command to tell BMP 180 what PLC program will read back To start the pressure conversion these commands are send to the BMP180 PDCWRITE 1 0 OxEE ICWRITE 0 0 0xF4 Copyright c 20
9. 4 9 Example 9 Battery Charger This is a PLC program to charge 3 serially connected NiMH batteries First it tries to discharge the batteries individually If any battery discharged to 1V it will stop the Copyright c 2008 2015 CAI Networks Inc 40 WebControl PLC User Guide Version 3 03 19 discharge and start charging When each cell is being charged to 1 25V it will stop charging We assume the A1 A2 and A3 being calibrated to 1V 100 The measurement on the battery 2 is the total voltage of battery 1 and battery 2 And the measurement on battery 3 is the total voltage of all three batteries This example will individually discharge and charge each battery start set opl 1 set op2 1 set op3 1 set RAMI 0 set RAM2 0 set RAM3 0 loop cnz opl check_bl cnz op2 check_b2 cnz op3 check_b3 goto loop end check_bl BNZ RAMI cl tstle AIP 100 RAMI bz el cl tstet AIPI 125 bnz el set opl 0 set op4 1 el ret check bi BNZ RAM c2 sub AIP2 AIP1 RAM4 tstle RAM4 100 RAM2 bz e2 C2 sub AIP2 AIP RAM4 tstet RAM4 125 bnz e2 set OP2 0 set OPS 1 e2 ret check_b3 BNZ RAM3 c3 sub AIP3 AIP2 RAM4 sub RAM4 AIPI RAM4 tstle RAM4 100 RAM3 bz e3 c3 Copyright c 2008 2015 CAI Networks Inc 41 WebControl PLC User Guide Version 3 03 19 sub AIP3 AIP2 RAM4 sub RAM4 AIPI RAM4 tstgt RAM4 125 bnz e3 set OP3 0 set OP6 1 e3 ret 6 4 10 Example 10 RFID reader and browser Control For office door using RFID reader as w
10. CAI Networks Inc WebControl PLC User Guide Version 3 03 19 6 3 WebControl PLC I O Identifiers n s snsnsneoneesisiieneeesinesisrsnrnesrsrsrnnenes 28 O4 7 ebControlPLG Examples 32 6 4 1 Example 1 Set Output based on condition 32 6 4 2 Example 2 Flash TTL output 33 6 4 3 Example 3 Push Button Input Control Output 33 6 4 4 Example 4 Send EMAIL ii 33 6 4 5 Example S Paralle e balla 34 6 4 6 Example 6 Sequential Oraria nai ae ea 36 6 4 7 Example 7 Traffic LighiS init Lalli 36 6 4 8 Example 8 Time based Control 38 6 4 9 Example 9 Battery Charger 40 6 4 10 Example 10 RFID reader and browser Control 42 6 4 11 Example 11 Bitwise Operation 43 6 4 12 Example 12 Angle CGalculaton 43 6 4 13 Example 13 Non Blocking Delay 43 6 4 14 Example 14 WEBSET to get server replY 44 6 4 15 Example 15 Server CGI Handles WEBSET n 44 6 4 16 Example 13 DC Slave Device Communication 45 6 4 17 Example 14 SPI Device CommunicationN 46 WebControl REGA sare 47 0 5 Login and COAIguraloai epici 47 6 6 Temperature Sensor Support i 47 6 7 Turnon off TTL output from another programming language 48 69 Extem
11. DIV al b d Divides a by b and puts the result into d Zero bit updated with result MOD al b d Divides a by b and puts the residue into d Zero bit updated with result MUL al bl d Multiplies a by b and puts the result into d Zero bit updated with result DEC a Decrements a by 1 Zero bit updated INC a Increments a by 1 Zero bit updated AND al b d Logical AND s a with b and optionally puts Boolean result into d Zero bit updated ANDB al b d Bitwise AND s a with b and optionally puts bitwise AND result into d Zero bit updated OR al b d Logical OR s a with b and optionally puts Boolean result into d Zero bit updated ORB al b d Bitwise OR s a with b and optionally puts bitwise OR result into d Zero bit updated XOR al bl d Logical XOR s a with b and optionally puts Boolean result into d Zero bit updated XORB al b d Bitwise XOR s a with b and optionally puts bitwise result into d Zero bit updated ANDT al b d Logical AND s a with b and optionally puts Boolean result into d Zero bit updated Skip next line if zero ANDBT al b d Bitwise AND s a with b and optionally puts bitwise AND result into d Zero bit updated Skip next line if zero ORT al b d Logical OR s a with b and optionally puts Boolean result into d Zero bit updated Skip next line if zero ORBT al bl d Bitwise OR s a with b and optionally puts bitwise OR result into d Zero bit upd
12. Measurement Enable On on TTL Input 1 x10 Control TTL Input 1 Enable IfO Setup TTL Inputs Email Setup ooo wml RR I P ele le Temperature State Inverted rs rrr fe le fe fe Sensor Setup TTL Outputs LK nu Ja b F e l PLC Program General Setup fd D a Browser Control Enabled FFF Plc Control Enabled g IS KE F fa IS IS E statetnverted rr Jr Network Setup Help Copyright 2008 2012 CAI Networks Inc Figure 5 0 I O setup WebControl PLC allows user using browser to directly control the output state If a command line utility or third party control software used you will need to enable the Browser Control for that TTL output also may need to go to network configuration to disable the Web login see figure 4 0 The inverted state will be remembered in EEPROM even after power loss The invert state will be restored upon power resumed X10 Enable will allow user to send X10RF commands through TTL port8 once X10 is enabled X10 transmitter used to be powered by TTL but in this version firmware TTL7 is freed from X10 function 5V power can be wired to other 5V terminals for example temperature terminal 3 Copyright c 2008 2015 CAI Networks Inc 8 WebControl PLC User Guide Version 3 03 19 Counter Enable Frequency Measurement Enable TTL Input Enable are radio buttons that you can only select one of them Those functions sharing the same TTL1 input Please note the Co
13. case User can change both user ID and password 6 6 Temperature Sensor Support 2 1Q The document stated supporting DS1822 DS1820 1 Wire Temperature Sensors assumed the whole DS18xx family of devices would work used a DS18S20 and get about 3 5 degrees C when powered 10 6 when parasitic powered It should read 23 24 at room temperature For power tried pin 3 of the temperature terminal and pin 3 of the humidity terminal and the result is the same 2 1A WebControl can simultaneously connect 8 optional DS18B20 DS1822 DS18520 based digital temperature sensors In the past we require 12bit temperature sensor Now we lose the requirement to 12bit and 9 bit Maxim IC temp sensors We still do not support parasite part Copyright c 2008 2015 CAI Networks Inc 47 WebControl PLC User Guide Version 3 03 19 2 2Q How to read temperature or sensor ROM code from command line in Linux 2 2A Use wget http webcontrol ip gett1 cgi to read the temp sensor T1 and use wget http webcontrol ip gett1rc cgi to read the sensor T1 ROM code 2 3Q What can cause my temperature sensor not display correctly 2 3A Use solid copper wire for your 1 wire bus for example CAT5 cable Reduce any unnecessary length of the wire Do not hook up unsupported parts to the 1 wire bus since they may generate 1 wire signal causing trouble 2 4Q run a long cable between the DS18B20 and WebControl sensor does not work 2 4A According to Maxim IC
14. 024 AIP1 to AIP3 are built in A D converters Optional DS2450 provided additional analog inputs Please note when DS2450 over range its output is zero When DS2450 disconnected its value set to 1023 When DS2438 presents it will be assigned to AIP5 8 Temperature sensor inputs 1 8 Valid range 550 1250 Note that temperature values are specifies in 10 s of degrees So to test for 21 6 degrees C you would use the value 216 DS2438 will start with hex value 26 as its ROM ID Temperature sensor state l or 0 1 GOOD sensor 0 bad sensor Copyright c 2008 2015 CAI Networks Inc 28 e TS6 TS TS8 CAS CAG CAT CA8 DCAS DCA6 DCA DCAS CCAS CCA6 CCAT CCA8 Mm oF W DF SECHER CO RLI RL2 RL3 RL4 RL5 RL6 RL7 RL8 CD CT CDW CH CM CS CDAY CMONTH CYEAR CTS WebControl PLC User Guide Version 3 03 19 When DS2438 chip on l wire bus and assigned ID in temp setup screen to T5 T8 CAx reflects the current measreument for that chip reading for CA5 CA8 is 0 2441mV LSB across the load resistor Read only When DS2438 chip on l wire bus and assigned ID in temp setup screen to T5 T8 DCAx reflects the Discharge Current Accumulator It can be read or SET When DS2438 chip on l wire bus and assigned ID in temp setup screen to T5 T8 CCAx reflects the Charge Current Accumulator It can be read and SET Humidity sensor valid range 0 100 Email identifiers 1 8 WEB
15. 08 2015 CAI Networks Inc 45 WebControl PLC User Guide Version 3 03 19 PDCWRITE 0 1 0xF4 The first line tell the BMP180 that WebControl wants to start communication with it OxEE is the sensor address on the I2C bus The second line tell the sensor to start conversion 0xF4 is the control register address The third line tell the sensor which value to convert 0xF4 is the pressure OSS 3 resolution 16 bit To read back the conversion result these command are send to the BMP180 PDCWRITE 1 0 OxEE CWRITE 0 0 OxF6 PDCWRITE 1 0 Et RCREAD 0 0 RAMIO RCREAD 1 1 RAMII 6 4 17 Example 14 SPI Device Communication WebControl 8 firmware from 3 02 18dx added SPI device support Following is a short example communicate with the MAX6657 temperature sensor probe SPI device has no address but PLC code need to turn on Chip Select to 0 to enable that SPI sensor to output to the bus If more than one SPI devices please make sure turn all sensor CS pin to 1 before communicate with selected sensor START SET OP1 0 max6675 chip enable SPIBYTE 0 0 RAM11 reading higher 8 bites mode 0 SPIBYTE 0 0 RAMIO reading lower 8 bits mode 0 SET VARI RAMI copy to see what value SET OPI 1 turn off CS ANDB VARI 32760 VAR2 remove lower 3 bits ROTR VAR2 3 VAR3 shift to lower 3 bits MUL VAR3 25 VAR4 times 25 for actual value DELAY 100 just wait here or do anything you like END Copyright c 2008 2015 CAI Networks Inc 46 WebControl PL
16. 11 Bitwise Operation There are ANDB ORB and XORB operator operate on the VAR or RAM on the bit basis This will allow each RAM or VAR to store up to 31 binary states When VAR stores value 12345 and RAMI stores value 256 after execute ANDB VAR1 RAM1 VAR1 VAR1 stores the value 0 After execute ORB VARI RAMI VARI VAR1 stores the value 123712 XORB VARI RAMI VARI First execution will be 123712 if execute next time VAR1 will be back to 12345 In another word XORB can toggle the bit 6 4 12 Example 12 Angle Calculation From 3 02 16c firmware angle calculation is supported In PLC program users can SIND 91 VARI Or COSD 185 VAR2 Or TAND 630 VAR3 The result for SIND and COSD is x1000 because we can only have integer on this processor The result for TAND is x100 6 4 13 Example 13 Non Blocking Delay Non blocking delay is expressed in PLC code as next to the operators The number inside is micro seconds The operation can be on both operators during TST operations Each input and output and VAR associated with a non blocking delay timer value That value is set when I O state is changed or VAR value being modified If later PLC instruction using non blocking delay that timer value will be referenced If current time is less than stored timer time plus the delay period the specified operation will not be performed Reading value with non blocking delay will return false if timer value is not meet For example
17. C User Guide Version 3 03 19 WebControl PLC FAQ We include some users frequently asked questions here 6 5 Login and Configuration 1 1Q Can you tell me how to connect with Windows Explore cannot communicate 1 1A If you have DHCP server on your network please check with your DHCP server log WebControl is likely obtained an IP address from your DHCP server Once your find out the IP address assigned by DHCP server you can use browser to connect to http what ever dhcp assigned ip You will see the login screen If you don t have DHCP server on your network WebControl s default IP address is 192 168 1 15 You must change your computer s IP address temporarily to 192 168 1 1 make sure no other host using that IP address on your network then from IE browser enter http 192 168 1 15 You will see the login screen 1 2Q have problem to setup the clock it does not work even setup my network and DNS server correctly 1 2A Please check with your ISP to make sure the DNS server IP address is valid If you have Linux computer you can use dig command to make sure that DNS server IP can resolve the ntp org Please note that many ISPs restrict the DNS access from outside its own IP address range If your DNS server IP is not from your ISP it may not work dig ntp org your dns server ip 1 3Q What is the default user ID and password can change it 1 3A The default user ID and password is admin password all lower
18. PLC logic uses 0 15 or 0 0xF for code older web GUI only use 0 F Copyright c 2008 2015 CAI Networks Inc 10 WebControl PLC User Guide Version 3 03 19 3 4 Output Control CAI WebControl PLC Version v03 027 09 IpAddress 192 168 12 15 Name WEBCONTROL 10 24 2011 13 08 23 Output Control DL Outputs mron messi xv Lg seess o Email Setup on muor 0 TTL8 ON _TTL8 OFF 0 System Status Output Control x10 Control 1 0 Setup General Setup Network Setup Save States Copyright 2011 CAI Networks Inc Figure 6 0 WebControl Output Control When click on each TTL output On or Off the current state of the TTL output will change However the display may or may not update depending on the Web pulling enabled in the General Setup screen If you did not enable the Web Pulling to save the bandwidth you will need to use browser refresh to see the output state change Please note Save States button will make WebControl store the state in the EEPROM When power lost and reapplied the output will remember the states being saved Copyright c 2008 2015 CAI Networks Inc 11 WebControl PLC User Guide Version 3 03 19 3 5 Notification Setup WebControl allows up to 8 different email notifications to be send from the PLC program Please note the port can be any number but WebControl current hardware cannot support SSL enabled email Certain email servers like Gma
19. RtaW46cGFzc3dvcmQg Between username and password there is no space In earlier version you need to specify AUTHBASIC from 3 02 17 firmware the third field is dedicate for the encrypted user ID and password so that AUTHBASIC can be omitted In your PLC logic you can put this command WEBSET URL1 VARI Then it will set ISY variable 15 to the value of VAR1 To do base64 encryption you can go to our web site at http www cainetworks com support base64 encoding html From 3 02 17 firmware server CGI code can return a 32bit signed number to WebControl during WEBSET call Please refer to the chapter 6 example 15 for how to write the CGI code and how to refer to this returned value To obtain support for email or WEBSET feature full TCP capture data is required The captured data must be able to fully display in WireShark software Copyright c 2008 2015 CAI Networks Inc 14 WebControl PLC User Guide Version 3 03 19 3 6 General Setup When WebControl is connected to the network it will obtain NTP time from Internet User need to set correct time zone on WebControl PLC CAI WebControl PLC Version v03 02 18 IpAddress 192 168 1 15 Name WEBCONTROL 10 14 2011 12 17 55 General Setup System Status Clock Setup Time Zone Output Control x10 Control I O Setup Set Date Time Note time format MM DD YYYY HH MM SS Notify Setup ODay Light Saving ON Temperature Opt
20. SET these URLs 1 8 Current date mm dd yyyy format Current time hh mm ss format Current day of week Current hour of day Current minute of hour Current second of minute Current day of month Current month of year Current year Current total seconds since 1 1 1970 32bit signed number Copyright c 2008 2015 CAI Networks Inc 29 VARI VAR2 VARS VAR4 VARO VAR6 VART VAR8 RAMI RAM2 RAM3 RAM4 RAMO RAM6 RAM7 RAM8 RAMIH RAM2H RAM3H RAM4H RAMoH RAM6H RAMTH RAM8H RAMIL RAMZL RAM3L RAM4L RAMoL RAM6L RAM7L RAM8L RAMIO RAM20 RAM30 RAM40 RAM50 RAM60 RAM7O RAM80 RAMII RAMZI RAM3I RAM4I RAM5 1 RAM61 RAM7 1 RAM8 1 WebControl PLC User Guide Version 3 03 19 32 bit signed integer variables 1 8 The value will be displayed in System Status Delay operator is valid on these It will help debug your program if you store debug value in VARx 32 bit signed integer general purpose RAM 1 8 Delay operator is not valid on these Not displayed anywhere 16 bit unsigned integer general purpose RAM 1 8 Delay operator is not valid on these Not displayed anywhere store in the SAME RAM location as RAMI 8 higher 16 bits 16 bit unsigned integer general purpose RAM 1 8 Delay operator is not valid on these Not displayed anywhere store in the SAME RAM location as RAM1 8 lower 16 bits 8 bit unsigned integer general purpose RAM 1 8 Delay operator is not valid
21. The default IP address will be 192 168 1 15 Be aware that once you enable DHCP in your WebControl network settings page you will need to check your DHCP server log for which IP address DHCP assigned to the board You need to know and understand the network you attaching this hardware to in order to know where to look for DHCP server logs For home networks DHCP serving is commonly enabled at the router Each WebControl PLC board has a unique MAC address Look in the DHCP log to find the matching MAC address then you can find the IP address DHCP assigned to the hardware From a computer connected to the same network start a web browser and point to that IP address for example http ww xx yy zz when the web page loads you will be prompt for login The default user ID and password is admin password all in lower case You will see this page once logged in CAI WebControl PLC Version v03 02 14 IpAddress 192 168 1 15 Name WEBCONTROL 09 06 2012 11 57 22 System Status SEE 00000 x10 Control TTL Output Bits o o o o o o o 0 I O Setup 32 Bit Signed vars 0 0 o o o o o 0 Email Setup Inputs Temperature Sensor Setup PLC Program ie T General Setup Temperature Sensor Sanel de ok ok ok ok unbound Network Setup 512 Humidity Sensor oe Refresh Copyright 2008 2012 CAI Network
22. URL is a string leading all the way to the value being set on the WebControl or remote HTTP server The last part of the URL is the Base64 encrypted use name and password This will allow one WebControl to set value in another WebControl with password protected If the other side does not require login this field can be left blank For example if you want to set a remote WebControl board VARI to value 1234 you simple in the PLC logic calling WEBSET URL1 1234 Copyright c 2008 2015 CAI Networks Inc 12 WebControl PLC User Guide Version 3 03 19 Or WEBSET URL2 VAR Please note WEBSET has sending queue of four If there are WEBSET requests coming more than the queue can hold the older requests will get lost In addition if the remote WebControl or server does not respond the WEBSET will fail CAI WebControl PLC Version v03 02 18 IpAddress 192 168 1 15 Name WEBCONTROL 10 14 2011 12 09 44 Notification Setup System Status SMTP Host example mail gmx net Port for gmx is 587 Username example myaccount gmx net Password example password on gmx net From Address Mostly same as Username Item Starts Not Reporting EMAIL ALL I O V Output Control x10 Control I O Setup Notify Setup Temperature Sensor Setup PLC Program General Setup Network Setup IP addr port Virtual Host example
23. WebControl Programmable Logic Firmware Version Firmware datastamp Doc last modified Controller User Guide 3 3 19 2 3 X 3 03 19 4 16 2015 6 18 2015 WebControl PLC User Guide Version 3 03 19 Table of Contents e eil ee ica 1 Ss H ele ai 1 t2 leet EM 1 2 WebControl 1 0 2 2 1 PoWersSUpplNpulsaLl baa ana Pada ee 2 LZ Topic 2 23 AVOND P ON eaa 3 24 REWE SENSONA EEN 3 2 5 Humidity Sensor Input 3 2 6 Spale e He e EE 4 3 WebControl PLC Web GUI Configuration 5 Dil Network Settings elabora alla 5 SS NIP Serner E 6 3 1 2 ACCCSS due EE 6 Sie SS at 8 23 ke ge E 10 did QUPUCCOnNtol aaa 11 ES Oe Te teen E EE 12 3 6 General Setup iii 15 di Reset 16 4 AUX System Ioputs ei 17 4 1 Diga Ipilll ete ee en ee ene eee eee ee 17 4 2 Analog INU sce oe rc oe cas ace ech ct cee in tain Soe ats ie 18 4 3 DS1822 DS18B20 1 Wire Temperature Sensors n 18 44 Maxim DS2438 Sensor racer 18 4 5 Honeywell 4000 Series Relative Humidity Gensor 19 NAS SU attilio 19 D ee RE SRE EER cca 19 46 Ines E 20 4 9 Direct Query System Inputs and Outputs 20 5 iCal TMG Clocks vasale 22 5 1 Network Requirements to Use the NTP i 22 6 WebControl PLC Programming i 23 6 1 The basicsorPEG Programming ll LIL Lasa 23 6 2 WebControl PLC Instructions 24 Copyright C 2008 2015
24. WebControl PLC User Guide Version 3 03 19 consideration to it 6 4 6 Example 6 Sequential I O The following simple program shows how to set up sequential I O OPI is set when IPI rises from 0 to 1 OP4 is cleared when IPI rises from 0 to 1 OPI1 is cleared when 04 OP2 is set when T3 gt 25 AND OPI 1 OP2 is cleared when OPI EMAILI is sent when OP2 is set O4 is set when OP2 1 for more than 1 second The assembly language written for the above scenario would be as follows START BNZ IPI start ll TSTEQ IP1 1 BZ Il SET OP11 SET OP4 0 12 TSTGT T3 250 RAMI AND OPI RAMI BZ 12 SET OP2 1 EMAIL EMI 13 TSTEQ OP2 1000 1 BZ 13 SET OP4 1 SET OP10 END Please note in this example we assume the TTL input analog input and temperature reading are all perfect no bouncing up and down In reality you have to add consideration to it 6 4 7 Example 7 Traffic Lights This example will let pedestrian to push a button to change the light on a busy street so that he can cross the street safely IP1 hooks up to the pedestrian crossing button If someone pushed cross button the street will have amber light on for 10 seconds then red light to stop all the cars allowing pedestrian to cross street in next 30 seconds At the end of 30 seconds it will flash the amber and red light for 5 seconds Copyright c 2008 2015 CAI Networks Inc 36 WebControl PLC User Guide Version 3 03 19 VAR1 in the main program wil
25. alANalog ChP Eege 49 6 9 Power Supply Reourement i 49 Copyright C 2008 2015 CAI Networks Inc ii WebControl PLC User Guide Version 3 03 19 Table of Figures Figure 1 0 WebControl PCB inputs and outputs dagram rnn 2 Figure 2 0 WebControl sensor connections 3 Figure 3 0 WebControl PLC system status 5 Figure 4 0 WebControl PLC Network configurable esssseseesieseeeeerierierrerrsrerrnren 6 Fouro RA Ed le WEE 8 Figure 6 0 WebControl X10RF Control 10 Figure 6 0 WebControl Output Contra 11 Figure 7 0 WebControl email setup s es eseeeeneeneeneennsnarnerinnnrrerrerrernsrrerrerrerrnrnnrn 13 Figure 8 0 Network defaults 15 Figure 9 0 WebControl J12 Input pins 17 Figure 10 0 WebControl Temperature sensor assignment n 18 Copyright C 2008 2015 CAI Networks Inc lil WebControl PLC User Guide Version 3 03 19 1 Introduction This document provides an overview of the technical aspects of using WebControl 8 PLC It describes the inputs and outputs offered by the PLC version of the WebControl hardware and firmware The WebControl PLC function usage and syntax as well as many examples are provided there to help you get started The PLC version of firmware provides greater flexibility in I O control but in return expects user to learn programming concepts and write an assembly like PLC program A PLC program has the ability to read w
26. and turn it off at BAM The DAILY subroutine will start the water sprinkler at 6 30AM for four zones The MONTHLY routing will check the salt low sensor AIP3 on the water softener and send email notice 2 The YEARLY routing will ring the New Year s bell connected to OP6 on each and every New Year s Day for the whole day START CALLSUB HOURLY CALLSUB PERIOD CALLSUB DAILY CALLSUB MONTHLY CALLSUB YEARLY END HOURLY TSTNE RAMI CH GOTO TI RET Copyright c 2008 2015 CAI Networks Inc 38 T1 SET RAMI CH SUB AIP1 AIP2 RAM2 TSTGT RAM2 10 EMAIL EMI RET PERIOD TSTGE CH 18 RAM2 NOP TSTLE CH 5 RAM3 NOP OR RAM2 RAM3 OPI RET DAILY TSTEQ CH 7 SET RAMS 0 TSTEQ CH 6 BZ NOTYET TSTGT CM 30 CALLSUB WATERING NOTYET RET MONTHLY TSTNE RAM4 CMONTH GOTO T2 RET V2 TSTLE CH 8 GOTO 2EARLY SET RAM4 CMONTH TSTLT AIP3 20 EMAIL EM2 2EARLY RET YEARLY TSTEQ CMONTH I RAM2 NOP TSTEQ CDAY 1 RAM3 NOP AND RAM2 RAM3 OP6 RET WATERING BNZ RAMS W_DONE ZONEI Copyright c 2008 2015 CAI Networks Inc WebControl PLC User Guide Version 3 03 19 39 WebControl PLC User Guide Version 3 03 19 SET OP2 1 TSTLE CM 35 GOTO ZONEI SET OP2 0 ZONE 2 SET OP3 I TSTLE CM 40 GOTO ZONE2 SET OP3 0 ZONE3 SET OP4 1 TSTLE CM 45 GOTO ZONE3 SET OP4 0 ZONE4 SET OP5 I TSTLE CM 50 GOTO ZONE4 SET OP5 0 SET RAMS 1 W_DONE RET Please note in DAILY subroutine we call another subroutine w
27. ated Skip next line if zero XORT al b d Logical XOR s a with b and optionally puts Boolean result into d Zero bit updated Skip next line if zero XORBT al b d Bitwise XOR s a with b and optionally puts bitwise result into d Zero bit updated Skip next line if zero BNZ a b If the optional a operand is specified it is tested for a non zero value If ais not specified then the zero bit is tested for Copyright c 2008 2015 CAI Networks Inc 25 WebControl PLC User Guide Version 3 03 19 non zero If true then program jumps to label specified in operand b BZ a b Same as BNZ but tests for zero value CNZ a b Same as the branch instruction but calls a subroutine instead of branching See section on program address stack CZ a b Same as above but tests for zero result CALLSUB a Calls subroutine with label a See section on program address stack GOTO a Branches to program address specified by label a DELAY a Delay instruction delay specified in 1 1000 seconds This delay is blocking delay so that next PLC instruction will not execute until delay is over NOP A no operation instruction RET A return from subroutine instruction EMAIL a Sends email a message ID to send EMI EMS X10 a bc a house code 0 15 b device code 0 15 c ON OFF BRIGHT DIM WEBSET a b a URL1 8 b number or VAR RAM or any oth
28. atering In this place we have to use subroutine since we only want to call this routine after 6 30AM If current minute is not 30 we will skip Watering will be done before 7AM so that we clear the flag RAM5 at 7AM Also please notice RAM1 RAM4 and RAM5 are holding static value and RAM2 and RAM3 are temporary storage being used by more than one subroutine You can decide which RAM is for temporary data which is for static value In the PERIOD subroutine we constantly compare the time and set the OP1 ON or OFF That is okay for solid state relay or other control relay since the logic level did not change all the time However if you are sending a X10 command to turn on and off different lights you want to make sure the X10 command only issued once not repeatedly You may create another subroutine in which set flag only calls X10 1 15 ON only once to turn ON light at house code 2 unit code 16 please note WebControl s X10 house code range 0 F and device code range also 0 F In the MONTHLY routine we first check the current hour being 8AM then we check the water softener s salt level In this way you will not be waked up by email in the midnight When program WebControl PLC for time based logic please make sure the time being used in different part of the program having no conflict between all the subroutines If you want two things to happen at the same time you should consider combine them into same routine to handle 6
29. bControl PLC User Guide Version 3 03 19 6 WebControl PLC Programming The WebControl PLC firmware can be programmed to execute programmable logic sequences including comparison and sub routines This is the major change from the BRE Boolean Run Engine version firmware WebControl PLC uses assembly like PLC language Its main program starts with START and finishes with END The PLC program is pasted into the web GUI WebControl will automatically store it into its EEPROM so that if recycle power will not lose the program The limitation of the PLC is 1000 line of code The support for PLC programming is not included in the free support for configuration of WebControl PLC 6 1 The Basics of PLC Programming WebControl PLC program is NOT hard We have included many examples toward the end of this chapter A PLC program is made up of main routine and optional subroutines The main routine is enclosed between mandatory START and END instructions e g START main instructions go here END To change the logic flow GOTO instruction can be used as unconditional jump from one section of logic to another without call stack to return CALLSUB instruction is for unconditional logic flow that may return to the original call stack BNZ and BZ are conditional GOTO to branch to different section in logic CNZ and CZ are conditional CALLSUB instruction allowing returning to call stack address Both GOTO and CALLSUB use label to ide
30. e used to do manually control The above lines maybe need in double quotes to work 6 8 External Analog Chip DS2450 4 1Q have DS2450 on the 1 wire bus but reading is not stable 4 1A No longer support on this version hardware and firmware 6 9 Power Supply Requirement 5 1Q What kind of power required to run WebControl 5 1A WebControl 2 3 x hardware can operate from 5 to 40VDC power supply However its current requirement may vary due to power supply voltage Please make sure power supply has 1A current capacity Any noise in the power supply could cause problem during execution of WebControl PLC logic If a relay board is also used with WebControl please make sure the power supply has enough reverse current to handle the spike during relay switching Copyright c 2008 2015 CAI Networks Inc 49
31. ell as allowing operator remote browser control the following program provided the example RFID reader s NC normally connect output connects to IP1 on WebControl digital input A 2 2K pull up resistor also connected between IP1 and 5V In this way each time a valid RFID tag sensed a TTL 1 feeds to WebControl IP1 Remote operator can also open the door by using browser set OUTPUT TTL1 to on OP1 connects to the door open switch TESTEQ logic will make sure the OP1 is an 1 second momentary output LIGHTS subroutine is for light control outside the office door the light is on at 7PM and off at 5AM START CALLSUB LIGHTS TSTEQ RAMI 0 CALLSUB SET_OP1 CALLSUB CHK4LOW TSTEQ OP1 1000 1 SET OPI 0 END CHK4LOW TSTEQ IP10 SET RAMI0 RET SET_OPI TSTEQ IP1 1 RAMI SET OPI I RET LIGHTS TSTGE CH 19 RAM2 NOP TSTLE CH 5 RAM3 NOP OR RAM2 RAM3 OP3 RET Copyright c 2008 2015 CAI Networks Inc 42 WebControl PLC User Guide Version 3 03 19 In this logic SET_OP1 must be subroutine if TSTEQ RAMI 0 it will call the subroutine GET Ob but if RAM1 0 then it will skip that call In this way we can guarantee OP1 only being turn on once In the subroutine SET OP it checks if RFID reader did detected valid RDID card present If so it will set the flag RAM1 to true so that not being set over and over again For gate opening device this will make sure the gate will not left open all the time 6 4 11 Example
32. er readable SIND a b a degree b VAR or RAM to store the result COSD a b a degree b VAR or RAM to store the result TAND a b a degree b VAR or RAM to store the result ROTL a bc a source register b number of bits c result register rotate to the left overflow bits will be feed into right ROTR a bec a source register b number of bits c result register rotate to the right overflow bits will be feed to the left SETLED 01112 0 to turn off green LED 1 to turn on green LED 2 default blinking IPTS a b reading TTL input last state change time tick counts or paramter b is which TTL inut first parameter a has the value IPEDGE undefined not implemented yet I2CREAD abc a send ack b send stop c byte to read I2CWRITE abc a send start b send stop c byte to write SPIBYTE abc a mode b send byte c byte read from bus SREBOOT Force board to restart END End of main program This instruction will set the program counter back to zero and the program will start executing from the beginning Operands An operand can be any of the following e a signed 32 bit decimal number e g 100 or 1 or 0 etc e ahexadecimal number e g OxABF e adate stamp in the format MM DD YYYY e g 02 10 2010 e atime stamp in the format HH MM SS e g 20 25 00 Copyright c 2008 2015 CAI Networks Inc 26 WebControl PLC User Guide Version 3 03 19 e a day of week identifier enclosed in single quotes e g sun Day of week identifier
33. ess from eight to four In addition it added NTP Server section to allow user to enter his local NTP server s IP address to overwrite the default pool ntp org resolved IP address By default NTP server field should be 0 0 0 0 so that WebControl will use pool ntp org as the Network Time Protocol server 3 1 2 Access Settings For security purpose you can decide your own user name and password For being used over Internet you may also set the access list so that only host in the list can Copyright c 2008 2015 CAI Networks Inc 6 WebControl PLC User Guide Version 3 03 19 access the WebControl board over the network Please note that if any entry is 0 0 0 0 all IP addresses can access it Copyright c 2008 2015 CAI Networks Inc 7 WebControl PLC User Guide Version 3 03 19 3 2 I O Setup WebControl PLC allows users to directly from browser control each output or through the PLC logic to control the TTL output For flexibility user can decide if the TTL input or out to be inverted between logic 0 and logic 1 To use PLC logic first user must check the Global PLC enable to start the PLC engine Then for each TTL output user can decide if the PLC control will be applicable CAI WebControl PLC Version v03 02 14 IpAddress 192 168 1 15 Name WEBCONTROIL 09 06 2012 12 07 23 I O Setup joie z F Global PLC Enable System Status I X10 Enable Output Control Counter Enable on TTL Input 1 Frequency
34. f PLC logic wants to get multiple values from server reply it must issue one call at a time to avoid different WEBSET call return value clashing 6 4 15 Example 15 Server CGI Handles WEBSET The code below is for demonstration only it is written in C on apache server We do not provide support for writing server CGI code Please note to get the best result server CGI code should write back the string as early in the reply as possible In HTTP server reply processing server mostly after sending reply will close connection If the SET WC 2147483647 string sending out too late it could get lost because the connection is closed already Please test and make sure your server is response fast enough for the WEBSET call include lt stdio h gt include lt stdlib h gt include lt string h gt int main void char data remote_mac remote_host long m n FILE fp char buffer 18 r nnew get call r n printf s c c n Content Type text plain charset iso 8859 1 13 10 data getenv QUERY_STRING remote mac getenv HTTP_USER AGENT remote _host getenv REMOTE ADDR fp fopen tmp webcontrol txt w Copyright c 2008 2015 CAI Networks Inc 44 WebControl PLC User Guide Version 3 03 19 fwrite buffer 1 strlen buffer fp if data NULL fwrite data 1 unsigned int strlen data fp fwrite buffer 1 strlen buffer fp if remote_host NULL fwrite remote_host 1
35. gned to support one Honeywell 4000 series relative humidity sensor The Honeywell sensor output is almost linear voltage between 0 5V dc proportional to the relative humidity This output is fed into one of the A D converter channels on the microcontroller It can be read as H1 in PLC WebControl PLC has calibrated the humidity curve at 11 25 45 and 78 However due to sensor differences some sensors may read the humidity value different from actual value Adding a 5K linear potentiometer pot in series with pin 3 5V supply line can help user to adjust your sensor match the accurate humidity reading 4 6 DC Support The WebControl firmware 3 03 19 supports I2C functions Please look Figure 1 spare pin header The first one with pull up resistor is SCL I2C clock pin and second one with pull up resistor is Data pin SDA These two pins are pulled up to 3 0V but they are 5V tolerate so that I2C device can be 3 0V or 5V 12C device power can be 3 0V or 5V please check the spec sheet For example BMP180 pressure sensor is 3 3V device however market selling module has a 5V to 3 3V regulator on it so that the module must be powered by 5V The communication is through added PLC commands I2ZCWRITE and IZCREAD Please check the PLC command syntax in chapter six WC8 s I2C support includes clock stretching up to 255 uS It does not support bus mater arbitrition at this time Any communication to the slave I2C device will start w
36. if using a long cable connecting between the sensor and host controller it may require to add a pull up resistor 4 7k from 1 wire bus DQ pin on DS18B20 to the 5V supply near the far end of the 1 wire bus Please check out Maxim IC AppNote148 You do not have to add external power if you do not experience any problem 6 7 Turn on off TTL output from another programming language 3 1Q want to turn on off TTL output from Visual Basic can do it 3 1A You can reference how the browser does it and emulate that in your VB or script Please make sure to disable login in the Network Setup screen For security purpose please specify the IP address in the access list or your application sending encrypted user ID password in the same HTTP call Depends on the IP address and which TTL you want to control by programming language you may refer to these two browser URL lines http 192 168 1 15 api setttloutput cgi output 1 amp state 1 to turn on http 192 168 1 15 api setttloutput cgi output 1 amp state 0 to turn off and to manually set a VAR value from outside varid from 1 to 8 http 192 168 1 15 api setvar cgi varid 1 amp value 23456789 from 3 02 17 firmware WebControl supports manually set a UROM value from outside uromid from 1 to 4 http 192 168 1 15 api seturom cgi uromid 1 amp value 23456789 Copyright c 2008 2015 CAI Networks Inc 48 WebControl PLC User Guide Version 3 03 19 Command line browser wget can b
37. il requires use SSL enabled email client WebControl 8 does not support that However WebControl does allow sending email out from port other than 25 Most ISP provides the non SSL email server for its own customers on specified port for example gmx provide on port 587 Please contact your local ISP first to find out how to sending out non SSL encrypted email For example GMX email can be used SMTP Host malil gmx net Port 587 username your GMX email account password your password used From field Your gmx mail From firmware 3 02 16 and newer firmware user can specify different email address for different email notification So that different email can be send to different person for a different event WebControl 3 02 16 and above firmware also allow HTTP GET to be used to set the VAR or output state to another WebControl board provided the other board does not enable logic If the security is concern please set up allowed host in Network Setup screen This HTTP GET feature can also be used to send notification to the remote HTTP server given the remote server does have CGI logic to process the HTTP GET sent from WebControl User can specify up to 8 different URLs on each board There are three fields in each URL The first field is IP address and port in the format of 192 168 2 15 81 The is to separate the IP address and remote HTTP port There is no space It is followed by virtual host name The URI portion of the
38. iming adjustment based on his setup Default TDSO is 3uS Most user will be fine with default For shorter bus it could reduce to 1uS or lower For longer bus 30uS or longer may be desirable 1 wire signals are travelled in CATS cable at speed about 20Meter uS However we recommend to add filter resistor to reduce bounced signals from stub wire and far end of the bus instead of change the timing When Web polling enabled WebControl PLC building active Java code will constantly update the browser display for temperature humidity and I O status Please note with such a update it may take significant amount bandwidth from your network as well as WebControl s processor power 3 7 Reset Setup If the configuration was totally mess up user can reset the board to factory default configuration by shorting the RESET jumper while powering up the WebControl Please note reset will wipe out the entire configuration including the PLC program Please make sure backup your PLC program before reset After reset the login ID and password will be restored to admin password Default IP address is 192 168 1 15 with DHCP disabled Copyright c 2008 2015 CAI Networks Inc 16 WebControl PLC User Guide Version 3 03 19 4 AUX System Inputs The system AUX inputs of WebControl are used as inputs to the PLC engine see section 5 1 This section describes the connector ladled as J12 Digital and analog inputs come through J12 connect
39. ions Sensor Setup PLC Program UROM1 o User defined 32 bit int General Setup UROM2 0 User defined 32 bit int Network Setup UROM3 0 User defined 32 bit int Help o UROM4 0 User defined 32 bit int TDSO uS 1 Wire Data Sample Timing Web Polling Enabled Send Copyright 2008 2014 CAI Networks Inc Figure 8 0 Network defaults If the WebControl cannot reach to pool ntp org over Internet it will use its own built in clock with less accuracy User may change and update the clock from this screen by typing MM DD YY HH MM SS format in the Set Date Time input field then click Send button If a realtime clock chip connected to I2C bus user can use PLC code set this time UROM1 UROM4 are four identifiers can be used in PLC program They can help user to fine tune their PLC program for different setup These four values are stored in the EEPROM so that when power lost its value will be kept by the EEPROM When power restored UROM value will remain whatever they set before There are two ways to set UROM value One is to set it on this web GUI page by save modified value Another way to set their value is to use api seturom cgi call Please refer to the FAQ section for that method Copyright c 2008 2015 CAI Networks Inc 15 WebControl PLC User Guide Version 3 03 19 For 1 wire devices on a complex bus configuration its timing is critical Time Data Sample Offset TDSO field is for user making his own t
40. ith SEND START the last communication with SEND _ STOP Please see the PLC program example section for I2C usage 4 7 SPI Support The WebControl firmware supports SPI on the spare pin header please refer to Fig 1 for detailed pin location and function To communicate with SPI devices a PLC command SPIBYTE is added it takes 3 parameters mode byte out byte in Example SPIBYTE 1 RAM11 RAM21 where RAM11 is send to bus RAM21 contains byte received from bus If more than one device on PLC bus a TTL out pin may be used to enable the device on SPI bus Copyright c 2008 2015 CAI Networks Inc 19 WebControl PLC User Guide Version 3 03 19 In the current released firmware only mode 1 is supported In technical term mode 1 means phase CPHA 0 and polarity CPOL 0 This is most common mode in SPI devices Please contact us for any different mode support 4 8 Timers WebControl PLC is different from BRE engine User must write PLC code to implement timers and delay functions There is no hard limit of number of timers and delays There are blocking DELAY and non blocking delay functions detailed in section 6 2 WebControl PLC has built in timer reference value for PLC coding O CD Current date mm dd yyyy format a CT Current time hh mm ss format O CDW Current day of week O CH Current hour of day a CM Current minute of hour Els CS Current second of minute O CDAY Current day of month a CMONTH Current month of year
41. l let the crossing light turn on every 100 seconds does not matter anybody push the crossing button or not OP1 Red Pedestrian crossing light OP2 Amber OP3 Green IP1 Pedestrian Push Button START CALLSUB LIGHTS_GO loop SET VARI 10000 1 loopl TSTEQ IPI 1 BNZ sr BZ VARI sr GOTO loop1 Sr CALLSUB STOP GOTO loop END LIGHTS_ST SET OPI I SET OP2 0 SET OP3 0 RET LIGHTS_GO SET OPI 0 SET OP2 0 SET OP3 1 RET LIGHTS_AM SET OPI 0 SET OP2 1 SET OP3 0 RET STOP CALLSUB LIGHTS_AM DELAY 5000 Copyright c 2008 2015 CAI Networks Inc 37 WebControl PLC User Guide Version 3 03 19 CALLSUB LIGHTS_ST DELAY 60000 CALLSUB LIGHTS_AM SET RAM2 5 flash XOR OP2 1 OP2 DELAY 500 DEC RAM2 BNZ flash CALLSUB LIGHTS_GO RET 6 4 8 Example 8 Time based Control WARNING For time critical application please make sure to check CYEAR correct before taking action based on system clock When WebControl boot up it will uses ROM hard coded time in 2011 If PLC reporting year 2011 the NTP or real time clock has not sync the local clock yet This example will have five subroutines WebControl PLC will continuously loop through them The HOURLY routing will compare analog input 1 and analog input 2 if A1 A2 gt 10 send an email notice 1 You can use similar logic to adjust your solar panel orientation each hour etc The PERIOD subroutine will turn on night light hooked up to OP1 after 18 00 hours
42. le and use TTL input levels 0 and 5Vdc The AUX Input Port pin out diagram labeled as J12AUX in Figure 1 shows the layout of this port in more detail The matching connector for this port is TYCO ELECTRONICS 1658622 3 2 4 1 Wire Sensor Input The 1 wire sensor port allows up to eight Maxim DS1822 DS18B20 DS18520 1 wire temperature sensors to be connected It also allows one Maxim DS2417 real time clock and one DS2450 4 channel A D converter When DS2438 sensors are used it will take upper four DS18xy sensor location for temperature reading and DS2450 s analog inputs The temperature and analog input can be displayed via the HTTP browser and can be used as inputs to the PLC engine to control the TTL output port Since hardware revision 2 2 2 uses 5V to power 1 wire bus there is no need for any external power to the sensors Please note if more than one DS2450 is attached to 1 wire bus only the first one will be used by the firmware If more than 10 1 wire devices attached to the bus only the first 10 will be used 2 5 Humidity Sensor Input The current WebControl hardware has been designed to use the Honeywell 4000 series relative humidity sensor devices Using any other humidity sensor without careful consideration may result in malfunction of this feature The RH sensor can be used to display relative humidity via HTTP or be used to control the TTL outputs as an input in the PLC engine Figure 2 0 WebControl sensor c
43. n the heater OFF START TSTLE T3 370 OPI NOP TSTGT T3 389 SET OP1 0 END However this does not work when temperature reached above 37 degree C the OP1 turned off instead of reaching to 39 degree C The problem is the OP1 can be set to ON or OFF by the TSLE T3 370 OP1 line alone To reduce heater relay constantly turning ON and OFF it is better to have two subroutines to handle the OP1 state START TSTLE T3 370 CALLSUB HEAT_ON TSTGT T3 389 CALLSUB HEAT_OFF END HEAT_ON SET OPI 1 RET HEAT_OFF SET OPI 0 RET What if the heater relay stuck or the heater elements burn out You can add Copyright c 2008 2015 CAI Networks Inc 32 WebControl PLC User Guide Version 3 03 19 additional function in this PLC program to send you email notice or sound an alarm for such a situation 6 4 2 Example 2 Flash TTL output Flashes output 2 at a rate of 1Hz Please note OP2 500 has no space in between which delays 500ms Please note the delay function used in this example which is non blocking that means the PLC logic will immediately execute next TSTEQ instruction until the delay is over START TSTEQ OP2 500 0 SET OP2 1 TSTEQ OP2 500 1 SET OP2 0 END Another way to implement this is START XOR OP2 1 OP2 DELAY 500 END 6 4 3 Example 3 Push Button Input Control Output When a push button connected to TTL input 1 being pushed set the TTL output 3 ON START TSTEQ IP1 1 OP3 TSTEQ OP3 1 SET OP3 0
44. ntify where to execute next instruction Label can be any string less than 10 characters Label cannot be identical to any instruction keyword If sub routines are used then they are coded after the END of the main routine body Sub routines start at their label and must end with the instruction RET e g TEST_IO SUB instructions here RET Subroutines can be called from the main program and from within other subroutines Note that WebControl PLC has a return program address stack depth of 8 or call stack 8 The program control block has a zero bit that is updated implicitly on TEST instructions This zero bit is set by any one of these TEST instructions TSTEQ TSTNE TSTGT TSTLT TSTGE TSTLE ANDT ORT XORT ANDBT ORBT XORBT TSTB Zero bit flag can be accessed by IO name ZBIT This zero bit can also be used implicitly when using branch and call instructions like BZ BNZ CZ CNZ E g the following test instruction yields a Boolean result which will implicitly set Copyright c 2008 2015 CAI Networks Inc 23 WebControl PLC User Guide Version 3 03 19 the state of the zero bit Next a branch instruction is used which branches on the state of the zero bit TSTEQ IP1 1 sets zero bit based on the result of the test instruction branches to label if zero bit is non zero BNZ label Format of instructions label optional opcode operands Labels must be terminated with a colon and can be a maximum of 10 character
45. on these Not displayed anywhere store in the SAME RAM location as RAMI 8 byte 0 location 8 bit unsigned integer general purpose RAM 1 8 Delay operator is not valid on these Not displayed anywhere store in the SAME RAM location as RAMI 8 byte 1 location Copyright c 2008 2015 CAI Networks Inc 30 RAMI2 RAM22 RAM32 RAM42 RAM52 RAM62 RAM72 RAM82 RAMI3 RAM23 RAM33 RAM43 RAM53 RAM63 RAM73 RAM83 RAMIBI RAMIB2 RAMI B32 ROMI ROM2 ROM3 ROM4 COUNTER FCOUNTER WSRPLY LED ALLINS ALLOUTS ZBIT EMAILQ FWVERSION GPIOI GP102 WebControl PLC User Guide Version 3 03 19 8 bit unsigned integer general purpose RAM 1 8 Delay operator is not valid on these Not displayed anywhere store in the SAME RAM location as RAMI 8 byte 2 location 8 bit unsigned integer general purpose RAM 1 8 Delay operator is not valid on these Not displayed anywhere store in the SAME RAM location as RAMI 8 byte 3 location 1 bit access to purpose RAM 1 only This only availavble for RAMI Delay operator is not valid on these Not displayed anywhere store in the SAME RAMI location 32 bit signed integer user value stored in EEPROM read only value sets through general tab on web GUI 32 bit counter can be read compare or set read only frequency per second up to 2MHz read and write automatically set by web server during WEBSET call when server specified a value like SET_WC 12345678
46. onnections Please make sure the temp sensor and humidity sensor connected similar to this picture Reverse the polarity may cause damage to the board Copyright c 2008 2014 CAI Networks Inc 3 WebControl PLC User Guide Version 3 03 19 2 6 Spare Pin Header There are 15 terminal on this header Spare pin header has 3 groups 12C group Pin 1 SCL Pin 2 SDA Pin 3 5V Pin 4 GND SPI bus group most SPI devices requires 3V3 supply If an enable pin required GPIO1 in next group can be used Pin 5 GND Pin 6 3V3 Pin 7 MISO Pin 8 MOSI Pin 9 SCLK And other group Pin 10 GPIO1 Pin 11 GND Pin 12 GPIO2 Pin 13 GND Pin 14 PLED Pin 15 GND GPIO1 pin is not assigned any function it can be controlled in PLC GPIO2 pin through J9 header normally is connected to the TTL output enable function thus during power on and bootloader time TTL outputs are disabled Removed J9 header will disable GPIO2 control during power up GPIO2 is pulled to TTLO during bootloader time thus TTL output is disabled This enabled users to use negative going relay board However GPIO2 can not be used for anything else If a positive relay board is used GPIO2 can be controlled in PLC for other purpose Copyright c 2008 2015 CAI Networks Inc 4 WebControl PLC User Guide Version 3 03 19 3 WebControl PLC Web GUI Configuration To access WebControl PLC connect WebControl to the local network and power supply
47. or PIN 9 Digital 5 Input 15 PIN 8 Digital 4 Input 14 PIN 10 Digital 6 Input 16 PIN 7 Digital 3 Input 13 PIN 11 Digital 7 Input 17 PIN 6 Digital 2 Input 12 PIN 12 Digital 8 Input 18 PIN 5 Digital 1 Input 11 PIN 13 5V PIN 4 Ground PIN 14 Analog Ground PIN 3 Analog 3 Input A3 PIN 15 Analog Ground PIN 2 Analog 2 Input A2 PIN 16 Analog Ground PIN 1 Analog 1 Input A1 Figure 9 0 WebControl J12 Input pins 4 1 Digital Inputs WebControl has eight digital TTL inputs each of which can be configured to be inverted upon input to the system The PLC engine will then look for a true of false case of the input TTL level 0 is defined 0 1 75V TTL level 1 is defined as 3 5V When TTL1 being used as counter frequency measurement purpose its counts pulses up to 2MHz and max count is 32bit number Counter starts counts from rising edge after the falling edge Copyright c 2008 2015 CAI Networks Inc 17 WebControl PLC User Guide Version 3 03 19 4 2 Analog Inputs WebControl has three built in analog inputs each having an input voltage range of 0 to 10V In PLC code user can reference to the fourth analog input value AIP4 which is the reading from humidity sensor In this version firmware AIP5 8 are 16bit unsigned storage for reading any sensors from 12C or SPI bus 4 3 DS1822 DS18B20 1 Wire Temperature Sensors WebControl supports up to eight Maxim DS1822 DS18B20 12bit 1 wire
48. rite and compare values of the available inputs outputs variables and timers With a PLC program loaded and running WebControl PLC can operate on its own without a network connection The PLC programming module and programming guide are provided for a learn on your own experience Assistance in writing or debugging PLC code is not provided as part of the regular technical support for WebControl PLC configuration WebControl PLC 3 03 19 firmware backward compatible with 3 02 21 firmware 3 02 21 supports hardware rev 2 2 2 board 3 03 19 supports hardware rev 2 3 8 The main differences are I2C and SPI terminal addition and added other terminals 1 1 Scope The scope of this document is to be a guide for configuring and using the features provided by WebControl The reader is expected to be technically competent in all the technical areas within this document and is strongly advised to use this document alongside the other reference material listed in the reference section 1 2 Table of Definitions The following table is a list of definitions used though out the document Definition Description RH Relative Relative humidity GGG 4 SE Human readable name used as an alternative to an IP address for NEE the server on a network E g http WebControlTM IP Internet Internet protocol DHCP Dynamic host configuration protocol Read only memory S Read only memory Programmable Logic Controller
49. s 6 2 WebControl PLC Instructions The following symbols are used in the table below d destination a b c operands optional any operand enclosed in parenthesis mean it is an optional operand non blocking delay operator optional to TTL input output and VARs 32 bit unsigned number represent resolution of 0 001 seconds When the delay operator is used on input operands the current value of that input is only used if it has had that value for greater than the delay period specified between the brackets When this operator is used on an output operand the output value is only set for the period specified in the brackets All delay periods are specified in milliseconds Note that accuracy and timer resolution is approximately 100ms even though the delay operator value is in unit of 1mS Opcode Operands Description START Start of main program PROTECTED Must be 2 Opcode in PLC will not display PLC code TSTEQ al b d Tests if a is equal to b Boolean result loaded into optional destination d Zero bit updated with result If test evaluates to false then the next instruction is skipped TSTNE al bl d Tests if ais NOT equal to b Boolean result loaded into optional destination d Zero bit updated with result If test evaluates to false then the next instruction is skipped TSTGT al b d Test if a is greater than b Boolean result loaded into optional destina
50. s Inc Figure 3 0 WebControl PLC system status 3 1 Network Settings These are the basic settings that need to be configured in order for WebControl to work successfully on a network lt may be necessary to connect the board directly to Copyright c 2008 2015 CAI Networks Inc 5 WebControl PLC User Guide Version 3 03 19 a PC and access it using its default IP address before connecting directly to a live network in order to configure it correctly Figure 4 0 shows the Network settings WebControl has CAI WebControl PLC Name WEBCONTROL 02 08 2013 11 30 04 IpAddress 192 168 1 15 Network Setup MAC Address 00 22 12 01 01 01 Network Configuration etBIOS Name WebControl tatic IP Address Subnet Mask Gateway System Status Output Control x10 Control 192 168 1 15 I O Setup 255 255 255 0 Notify Setup 192 168 1 1 Temperature rimary DNS Server 8 8 8 8 Sensor Setup Secondary DNS Server 8 8 8 8 PLC Program sername assword password DHCP Enabled Web Login Enabled HTTP Port General Setup Network Setup NTP Server if not use default 0 0 0 0 OE Pp FScecesslimt_ _____ TP server IP Access Limit P Address 2 booo Send Copyright 2008 2013 CAI Networks Inc Figure 4 0 WebControl PLC Network configurable 3 1 1 NTP Server Settings This version changed from previous versions by reduced Allowed Limits host IP addr
51. s are sun mon ue wed thu fri sat e ap UO identifier that is a place holder for the real I O value that the PLC engine will get at runtime Valid I O identifiers are explained in next section Copyright c 2008 2015 CAI Networks Inc 27 WebControl PLC User Guide Version 3 03 19 6 3 WebControl PLC I O Identifiers The following are the valid I O identifiers OR VEZ OP3 OP4 OPS OP6 OP7 OP8 dE IP2 IP3 IP4 IPS IP6 IP7 IP8 IPINVI IPINV2 IPINV3 IPINV4 IPINVO IPINV6 IPINV7 IPINV8 AIP AIP2 AIP3 AIPS AIP6 AIP7 AIDS TI T2 T3 T4 Td T6 T7 T8 TSI TS2 ER TS4 TTL Outputs 1 8 Valid range 0 1 TTL Inputs 1 8 Valid range 0 1 When non blocking delay added to these input its value will return TRUE if input from 0 gt 1 longer than the delay value For example IP1 1000 will return FALSE if TTL input 1 from 0 to 1 last state change shorter than 1000ms IP1 1000 return TRUE only when input 1 from 0 to 1 and stay at logic 1 for longer than 1000ms TTL Invert Inputs 1 8 Valid range 0 1 This is exactly same TTL input as IP1 1IP8 except is inverted for filter short pulse purpose its usage is like IPINV1 1000 to filter 1 gt 0 pulse shorter than 1000ms If 1 gt 0 pulse is shorter than 1000ms it will return false Only when input state changed from 1 to 0 and stay that level for longer than 1000ms the value will be TRUE Analog Inputs 1 3 Valid range 0 1
52. temperature sensors Each temperature sensor must be first assigned a temp sensor number T1 T8 CAI WebControl PLC Version v03 02 09 IpAddress 192 168 17 15 Name WEBCONTROL 10 24 2011 13 17 41 Temperature Sensor Setup System Status Confi qured Sensors B 3 ZE GE a Sensor ROM Code Units x10 Control T2 _ roosssceoss cecco 1 0 Setup LG oeoc ocr em ceceo LGL beeoesd cocer T 10E040c30108 CoC e OF Temperature Sensor Setu Ts General Setup Network Setup Send Help Copyright 2011 CAI Networks Inc PLC Program Figure 10 0 WebControl Temperature sensor assignments Each temp sensor has unique ROM code The first two digit shows the sensor type When DS2438 presnts on the bus it will start from 26 We recommend to assign them to temp sensor T5 T8 One temp sensor can be assigned for more than one sensor number User can also select the unit as Centigrade or Fahrenheit If sensor UN failed later due to sensor failure or wire problem WebControl will display the state as failed but keep the last valid sensor value This is to prevent the PLC logic turn on heater cooler or motor undesirably 4 4 Maxim DS2438 Sensor V3 03 19 firmware does not support DS2438 sensors Copyright c 2008 2015 CAI Networks Inc 18 WebControl PLC User Guide Version 3 03 19 4 5 Honeywell 4000 Series Relative Humidity Sensor The WebControl hardware is desi
53. tion d Zero bit updated with result If test evaluates to false then the next instruction is skipped TSTLT al b d Tests if ais less than b Boolean result loaded into optional destination d Zero bit updated with result If test evaluates to false then the next instruction is skipped TSTGE al b d Tests if ais greater than OR equal to b Boolean result loaded into optional destination d Zero bit updated with Copyright c 2008 2015 CAI Networks Inc 24 WebControl PLC User Guide Version 3 03 19 result If test evaluates to false then the next instruction 1s skipped TSTLE al b d Tests if ais less than OR equal to b Boolean result loaded into optional destination d Zero bit updated with result If test evaluates to false then the next instruction is skipped SET a b Sets I O id a to the value of b No zero flag update SETB al b d Read a and set bit b and puts the result into d GETB al b d Read a bit position b and puts the result into d CLRB al b d Reads a and clear its bit position b and puts the result into d TSTB al b d Reads a and test its position b and puts the result into d Zero bit updated with result ADD al b d Adds a and b and puts the result into d Zero bit updated with result SUB al b d Subtracts b from a and puts the result into d Zero bit updated with result
54. to query all sensor and I O status VAR1 VAR8 can also be set by web UI Please see FAQ section for how to do that Copyright c 2008 2015 CAI Networks Inc 21 WebControl PLC User Guide Version 3 03 19 5 Real Time Clock WebControl has a build in clock functions that doing time keeping by using an atomic clock via the simple network timer protocol SNTP Configuration is required to set the correct time zone of the clock When NTP is not available WebControl will use its own crystal to maintain the clock accuracy If NTP is available only need to set the time zone in the clock page If NTP is not available please set your local clock in the clock page also Without NTP its internal clock may not as accurate To support using 12C real time clock module from 3 02 19 we have removed DS2417 support but allow user to set CTS from 12C real time module CTS is now using same format as GMT starts from 1 1 1970 5 1 Network Requirements to Use the NTP WebControl must be connected to a network that has access to a DNS server The primary and secondary DNS server addresses of WebControl are required to be configured correctly WebControl will use DNS to resolve the name of the timeserver The NTP server WebControl accessing is pool ntp org If internal NTP server must be used DNS server must resolve the name record for pool ntp org to your local NTP server s IP address Copyright c 2008 2015 CAI Networks Inc 22 We
55. unter is triggered at rising edge after the falling edge If your counting source TTL level was zero from start with you may miss count by 1 Frequency measurement is up to 2MHz Copyright c 2008 2015 CAI Networks Inc 9 WebControl PLC User Guide Version 3 03 19 3 3 X10 RF Control CAI WebControl PLC Version v03 02 18 IpAddress 192 168 1 15 Name WEBCONTROL 10 14 2011 12 06 17 X10 Control System Status Output Control x10 Control I O Setup x10 is enabled Notify Setup Temperature Sensor Setup PLC Program General Setup Network Setup Figure 6 0 WebControl X10RF Control WebControl uses TTL8 to control X10RF devices User must already enabled X10RF function in the I O Setup screen An external RF transmitter must be attached to the output TTL8 5V and ground In the USA the X10 RF frequency is 310MHz and in Europe the frequency is 433 MHz WebControl can send all 16 house codes and 16 unit codes controlling total 256 devices X10 RF function is supported in the PLC programming also In PLC programming PLC command is in the format X10 H U C Where H is house code from 0 15 U is unit code also from 0 15 C is one of following four commands 0 Off 1 On 2 Bright 3 Dim H U C can be variables so that user can dynamically change the X10 operation in PLC logic If the X10 function enabled TTL8 should not be used for controlling other devices Please note
56. will be send Only when RAMI lt 200 the LOOP will skip SEND logic and reset RAM2 to 0 6 4 5 Example 5 Parallel I O This simple program performs 4 separate I O checks and sets OP1 to OP4 states In this example we use subroutine feature of the PLC logic Although in this case GOTO can do same thing as CALLSUB CALLSUB can help program more readable In certain logic you have to use CALLSUB instead of GOTO depending on the logic flow We will explain more when we run into those examples The logic in this example follows OPI is set if T3 gt 50 OPI is cleared if T3 lt 50 Copyright c 2008 2015 CAI Networks Inc 34 WebControl PLC User Guide Version 3 03 19 OP2 is set if IP1 1 for more than 300ms OP2 is cleared if IP1 OP3 is set if AIPI AIP2 gt 1024 OP3 is cleared if P4 OP4 is set if OP1 1 OP4 is cleared if OPI The PLC code written for the above scenarios would be as follows START CALLSUB checkOPI CALLSUB checkOP2 CALLSUB checkOP3 CALLSUB checkOP4 END checkOPI TSTGT T3 500 OPI RET checkOP2 TSTEQ IP1 300 1 OP2 RET checkOP3 ADD AIP1 AIP2 RAMI TSTGT RAMI 1024 BNZ Il TSTEQ IP4 1 BNZ 12 RET ll SET O3 1 RET 12 SETO30 RET checkOP4 TSTEQ OPI 1 OP4 RET Please note in this example we assume the TTL input analog input and temperature reading are all perfect no bouncing up and down In reality you have to add Copyright c 2008 2015 CAI Networks Inc 35

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