ET-MODUL2-LAN/Wi-Fi User Manual
Contents
1. o 1 half duplex Suitable for RS485 communications In this mode the RTS line provides direction control and the CTS line is unused When the Ethernet to serial RCX LAN Wi Fi User Manual Page 11 16 MT ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL buffer of the DS is empty nothing to send out through the serial port the RTS line is LOW When there is some data to send out the RTS line is HI for as long as the data is being output Such behavior is intended to allow the RTS line to control the direction pin of the RS485 interface ICs and RS232 to RS485 converters e Flow Control enables or disables hardware RIS CTS flow control for the serial port of the DS when in the data routing mode When the Flow Control is 0 disabled the status of the CTS input is ignored and the RTS line is at LOW unless changed by the remote host When the Flow Control is 1 enabled the RTS output and CTS input lines are used to regulate the flow of data across the serial cable connecting the DS to the attached serial device o RIS is used to regulate the flow of data from the attached serial device to the DS When the serial to Ethernet buffer of the DS has free space the RTS is LOW and the serial device is free to send the data When the buffer becomes almost full the DS sets the RTS line to HI thus telling the serial device to stop sending the data The RTS is set to HI when there are less than 20 free bytes left2. ET MODUL2 LAN Wi Fi User Manual nt B QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT oo UL ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT iM SUMMARY 1 Hardware SS CVI NOI oa tae ser tee seats aches ecdecman ak ease ee wisest eee ce ide SERERA EKE ESNEAK SEEEN EERE EREE EAEAN 2 2 Technical Specifications 0 0 0 cccseeeeececeeeeeeaeeeeeeeeeeeeseaeeseseeeeeeesaeeeseueceeeeesseeeaseceeeeesssaeaeeeeeeeeessseaseeeeeeeeessaas 2 AS UU Vea lease has cates na cece ccm ss aga E E E E 3 3 1 Web based Configuration Utility ccc cccccceseecceeeseseeeeeeceeeeeeeeeseeeeeeeeesseaeeeeesseeaeeeeeessaeeeeessaaeeeesesaaess 3 3 2 Follow the steps below to access the Web based configuration Utility cceccecseseeeeeeeeeeeeeeeeeeeees 4 3 3 ROX LAN RCX WI FI Operating modes cccccccccsseeeceeecaeeseceeecseeeeeeesaeeeeeeeesaeaeeeeeeseeaseeeeesaaeeeessseaees 4 3 3 1 Modbus Gateway Operating MOdE ccccccccccesseseeeeeeeeeaeeeeeceeeesseeeeeeeeeeeeeessaaeseeeeeeeeessaaaaeeeeeeess 4 3 3 2 Ethernet to Serial converter Operating MOdE ccccccccsssssseeceeeeeecaeeeseceeeeessaaeseeeeeeesessaaaeeeeeeess 5 ONO MON ge cemace anceps otesacteetneceistatoceat E E E E EE et 5 AA GS Ne Weal oe AC pease eps sect sa T E EE 5 Ae WAGE SOU UNIOS A E E TE IE E VE A A PE E PE E A E P A 5 A WEF OUS aea E a asec adguencaes 6 A A ROUNO STATUS iistri snan a iaraa aaia anarian ninais 6 A SS
3. When On the Fly command setting is 1 enabled the DS will accept on the fly command network side parameters and instructions from the network host When On the Fly command setting is 0 disabled the DS will reject on the fly command from the host On the Fly command do not require prior authentication through Login command Password protection specifically for on the fly command can be enabled through the On the Fly Password setting On the Fly command provide a way of remotely controlling the serial port of the DS hence the name of this setting Remote Control e Password for on the Fly command enables or disables password protection for on the fly commands On the fly commands do not require prior authentication through Login command When On the fly Password is 1 enabled and the Password setting is set not lt NULL gt the network host must supply a valid password with every Parameter command it sends On the fly Password is irrelevant when the On the fly Commands setting is 0 disabled because in this case the DS doesn t accept on the fly commands at all e Notification Bitmask defines which I O lines of the DS are monitored for changes When the line being monitored changes its state a Notification message is generated and sent to the network host with which the DS has an established data connection Notification Bitmask is a byte value each bit of which disables when 0 or enables when 1 status change monitoring for a specific I O
4. WV OM egi EE E E E E 7 a SR aii AS S E O E A O A OE AN A O E T A E AA E A A E 7 Ale OOOO e ane bianaseieanadarenaee aiseduedaiuseennoiubteseaacennctaasetdsaquaspecuaauitaragemiersanantee 7 A CUMING UNG Sate crete E E E ETIE EN E A AA E E EA A A 7 4 8 1 Modb s GatEWAY nn ne rE ee Ee i Sini ia ei 7 4 8 2 Ethernet to Serial converter viieississcsaccnenndtadsuianseeindnaniuoeensenerdewsvaiswbns u enirnnsesasandiodsuesntsecensniieebesins 8 S CED e e E E E 14 5 1 Status LED signals seca saveaecece seecncececoeeqeaccmenseandsceanessacedeanseae anne vasa aitaa aa ERER ari Edan cou sseeaqeunevengieeoecesensoece 14 5 1 1 Patterns that are played once in response to a certain event cccccseeceeceeeeeeeeeeeeeeeaeeeeeenaeees 14 5 1 2 Patterns that are played repeatedly until replaced by another pattern cccecccecseeeeeeeeeeees 15 5 1 3 When the data connection is established the following patterns are additionally displayed 15 52 Channel Status LED SIC Mal S essiensa nE Ea AAST iE EE AAEE OE EE 16 5 2 1 Patterns that are played repeatedly until replaced by another pattern 00nnn000nnnnannnnnannnnannna 16 SRE E TAH E g A A E E E N AE A E EE AEA AA EA A 16 RCX LAN Wi Fi User Manual Page 1 16 iT ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LL 1 Hardware description RCX LAN Wi Fi is a Modbus RTU to Modbus TCP Gateway allows you to connect devices using the Modbus RTU pr
5. in the serial to Ethernet buffer Additionally the RTS line is set to HI in all cases when the serial port is closed o CTS is used to regulate the flow of data from the DS to the attached serial device As long as the DS detects LOW on its CTS input it is free to send out the data to the attached serial device To stop the DS from sending out the data the serial device must set the CTS line to HI The DS won t send out the data for as long as it detects HI on its CTS input Flow Control is irrelevant when the current serial interface is half duplex e DTR Mode Defines the function of the DTR line of the serial port of the DS When the DTR Mode is 0 idle the DTR line is at LOW unless changed by the remote host When the DTR Mode is 1 connection status the DTR output line of the DS reflects current connection status the DTR line is HI when no data connection is established at the moment and LOW when there is a data connection in progress e Power up DTR State Defines High or Low state of DIR pin on Startup This setting defines the startup voltage of the DTR pin By default DTR is HI on startup By changing this setting you can have DTR set to LOW on startup e Baud rate defines the baud rate of the serial port of the DS e Parity defines the parity mode of the serial port of the DS DS hardware does not have an option of two stop bits The way around this is to set the Parity to 3 mark Since this means that the parity bit will alwa
6. the port of the network host to which the DS will attempt to establish an outgoing connection When the DS will attempt to establish a connection to the destination host is defined by the Connection Mode setting Destination IP address the DS will attempt to connect to is defined by the current Destination IP address Destination Port Number is irrelevant when the current Routing Mode is 0 server since in this mode outgoing connections are not allowed e Notification Destination defines which UDP port the DS will send I O line status change notifications to Notification messages are generated when one of the monitored I O lines of the DS changes its state Which I O lines are monitored for changes is defined by the Notification Bitmask setting Notifications are only sent when the data connection is established and are sent to the network host with which this connection is established Notification Destination defines which UDP port on the destination host notifications are sent to when notifications are being sent as UDP datagrams out of band o 0 last know port Notifications are sent to the UDP port from which the most recent programming UDP datagram was received Therefore notifications are sent after at least one such datagram is received since the data connection is established This option is useful when the DS has to send notifications to the PC Port number from which PC applications are sending their programming UDP datagrams are usua
7. 92 168 168 1 Note If you have changed the default IP address assigned to the RCX LAN RCX WI Fl make sure to enter the correct IP address 1 Leave the Password field blank 2 Click Login Note The IP address of your pc must be in the same subnet as the RCX LAN RCX WI FI After logging in the General Settings page will be displayed he Veet Vee A eee tee E ee oe baa ee Hil lt B8 QFP ENGINEERING 3 General Settings are tisme ee e hame Da Sesteet P eters ETAL SE Cree 2806818 ISD ee beh 2h haere 8 SF Eana a a oD f agdied o OF ety Peeters eshte Seve j amos 3 3 RCOX LAN RCX WI FI operating modes RCX LAN RCX WI FI has several modes of operation it can be flexibly configured to operate as a Ethernet to Serial converter or a Modbus TCP to Modbus RTU Gateway Each RCX LAN RCX WI FIl s channel can be configured to operate in both modes In particular Channel 0 and Channel 2 are connected to RS232 serial ports while Channel 1 and Channel 3 are connected to RS485 serial ports RCX WI FI has a Wi Fi interface It is through this interface that you find available Wi Fi networks and select the one to associate with The device is compatible with the IEEE 811 2b g The protection of data on Wi Fi is provided by a 64 128 bit WEP encryption You can also create an ad hoc network of your own and have other stations connect to it 3 3 1 Modbus Gateway operating mode Follow the steps below to
8. ICMP DHCP IEEE 811 2b g Wi Fi WEP encryption 64 128 bit Protocols iP TCP UDP ARP ICMP DHCP WEB configuration CORNO TAON MENEE or provided configuration program Security Password Status indicators 4 channel status indicator led 1Wi Fi status indicator led 2 status led Power 12V DC 120mA RCX LAN 12V DC 155mA RCX Wi Fi Operating Environment Temperatura da 20 a 70 C umidit relativa da 5 a 95 Size 95X53X58 mm 3 DIN modules Certification CE EN50082 EN55011 directives 3 Getting Started This section will show you how to configure your new RXC LAN RCX Wi Fi using the web based configuration 3 1 Web based Configuration Utility Use the Web based Configuration Utility if you wish to change the default settings or optimize the performance of the RCX LAN RCX WI FI After you have completed the initial installation you can access the configuration menu at any time by opening a web browser and typing in the IP address of the RCX LAN RCX WI FI The RCX LAN RCX WI Fl s default IP address is 192 168 168 1 CO ania ma n E E O ew ga EEEE lip x A dya pr ih Ae V A T f 4 howa an Da 354 21 RCX LAN ease Erer I sseeord RCX LAN Wi Fi User Manual Page 3 16 ET MODUL2 LAN WIiFi User Manual V1 0 23 03 2011 WWW QEP IT TLL QFP ENGINEERING 3 2 Follow the steps below to access the Web based configuration utility 1 Open a web browser 2 Type inthe IP address of the RCX LAN RCX WI FI 1
9. OW it is also possible to close the connection by bringing the DSR line HI Connection Mode is irrelevant when the current Routing Mode is 0 server since in this mode outgoing connections are not allowed at all e Destination IP address Defines the IP address of the destination network host to which the DS will attempt to connect to by default Destination IP address serves two purposes o lt defines the IP address of the network host to which the DS will attempt to establish an outgoing data connection Exactly when the DS will attempt to establish such a connection is RCX LAN Wi Fi User Manual Page 10 16 oo UL ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL specified by the Connection Mode setting Destination port the DS will attempt to connect to is specified by the current Destination Port Number o This address also specifies the only network host from which an incoming data connection will be accepted when current Source IP Filtering is 1 enabled Destination IP address Is irrelevant in the following cases o For outgoing connection when current Routing Mode is 0 server because the DS does not establish outgoing connections in this mode at all o For incoming connections when current Routing Mode is 2 client because the DS does not accept any incoming connections in this mode at all or when current Source IP Filtering is O disabled e Destination Port Destination Port Number defines
10. P PPP When Wi Fi is not associated or disabled this LED Is off Note This pattern applies only to RCX WI FI 6 Quick Initialization Quick initialization is a way to completely reinitialize the DS without using any commands This feature is handy when the DS is running in the error mode and needs to be repaired To quick initialize the DS 1 Make sure the DS is powered 2 Press and release the Setup button to enter the serial programming mode Status LED will play the serial programming mode pattern 3 Wait for at least three seconds 4 Press and hold the Setup button for at least three seconds both status LED will be switched off and this will indicate that the initialization has been started 5 Initialization takes about one second to complete Initialization result will be shown by the status LED green LED will be switched on for about 2 seconds indicating successful initialization If the red LED is switched on this means that the DS is malfunctioning 6 Switch the DS off and back on again to exit the error mode if necessary RCX LAN Wi Fi User Manual Page 16 16
11. configure RCX LAN RCX WI FI for Modbus Gateway operating mode 1 In the General Settings page setting the parameters of the Ethernet network namely IP Address Subnet mask and Gateway IP Address Note The IP address of your pc must be in the same subnet as the RCX LAN RCX WI FI RCX LAN Wi Fi User Manual Page 4 16 _ TL ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LL 2 Inthe Channel Settings page choose the Channel and then select the TCP IP transport protocol and the Modbus Gateway routing mode Also define the parameters of the serial connection namely Port Baud rate Parity and Slave Address 3 The other parameters are defined according to their needs Now the device is configured to operate as a Modbus gateway Note For details see section 2 8 3 3 2 Ethernet to Serial converter operating mode Follow the steps below to configure RCOX LAN RCX WI FI for Ethernet to Serial converter operating mode 1 In the General Settings page setting the parameters of the Ethernet network namely IP Address Subnet mask and Gateway IP Address Note The IP address of your pc must be in the same subnet as the RCX LAN RCX WI FI 2 In the Channel Settings page choose the Channel and then choose one of the first three routing mode options Also define the parameters of the serial connection namely Port Baud rate Parity and Slave Address 3 The other parameters are defined according to their needs Now the
12. device is configured to operate as a Ethernet to Serial converter Note For details see section 4 8 1 4 Configuration This section explain in detail all the parameters of the RCX LAN RCX WI FI The parameters are divided into configuration page 4 1 General Settings e Owner Name defines the owner name identification for the RCX LAN RCX WI FI e Device Name defines the device name identification for the RCX LAN RCX WI FI e DHCP Choose Dynamic IP DHCP to obtain IP Address information automatically from server then for the DHCP to work there must be a DHCP server on the network where the RCX LAN RCX WI FI is installed e I P Address 192 168 168 1 is the default WAN IP Address of the RCX LAN RCX WI FI e Subnet mask 255 255 255 0 is the default subnet mask All devices on the network must have the same subnet mask to communicate on the network e Gateway IP Address enter the IP Address of the gateway in your network The default setting is 192 168 168 254 e Number of serial ports defines the number of serial ports available 4 2 Wi Fi Settings The Wi Fi Settings page is used to configure the wireless settings for the RCX LAN RCX WI FI e Wi Fi select enable if you want to switch on the Wi Fi the default value is disable e SSID the Wireless Network Name also called the SSID is a unique name that identifies a network All devices on a network must share the same wireless network name in order to communicate on RCX LAN W
13. ection is defined as the one across which no packets are transferred for a period of time not the one across which no data is transferred for a period of time This provides a way of maintaining the connection even in the absence of data this is Known as keepalive For TCP connections remote host can send empty ACK packets for UDP connection remote host can send UDP datagrams of zero length Connection Timeout is relevant even when the Connection Mode CM setting is O immediately In this case when timeout comes the DS terminates an existing connection to the network host and immediately opens a new one This can be used to auto repair hanged connection in systems where permanent connection to the network host must be maintained indefinitely e Transport Protocol selects which communications protocol TCP IP or UDP IP will be used by the VSP for data communications with the DS Omitting the parameter selects the UDP IP protocol For the data connection with the DS to work the same transport protocol must be selected on the DS side This parameter has the same function as the transport protocol option of the VSP for Windows Unless you have a specific reason why the UDP should be used very rare we recommend you to stick to the TCP IP The TCP IP is a reliable delivery protocol that makes sure that no data is lost in transit between the VSP and the DS The UDP on the contrary does not guarantee data delivery e Broadcast UDP data
14. ent from this port For TCP communications the DS accepts incoming data connections on the data port but establishes Outgoing connections from a pool of ephemeral ports in the 10000 10255 range port number is incremented with each new connection Port 65535 is excluded from the allowable range because port 65535 is a programming port of the DS command UDP datagrams are sent to this port Technically this only affects UDP communications TCP connections should still be able to use this port but the port 65535 was not allowed to be selected as the data port from the early versions of DS firmware so this restriction is now preserved for historical reasons Since programming UDP datagrams can now also be sent to port 32767 this port cannot be used for UDP data communications when current Transport Protocol is 0 UDP The DS will allow the Port Number to be programmed to 32767 but all data sent to this port in the UDP mode will be interpreted as programming commands Using port 32767 for TCP communications won t cause any problems New telnet programming method uses telnet port 23 for DS programming as well Any connection established to port 23 of the DS is interpreted by the DS as a programming connection Therefore this port cannot be used for data connections when the current Transport Protocol is 1 TCP e Connection Mode defines under which condition the DS attempts to establish an outgoing connection Since the DS only allows for a single data con
15. feature is a very useful debugging tool that lets you determine the DS state at any moment The information in the dialog is updated each time Refresh button is pressed Routing Status dialog displays the following information e Current state of routing buffers Routing buffers are used as a temporary storage for the data being routed between the Ethernet and serial ports of the Device Servers DS The routing status RCX LAN Wi Fi User Manual Page 6 16 oo UL ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL dialog reports the number of committed bytes for serial gt Ethernet buffer total number of bytes in each buffer data and the capacity of the buffers Read serial to Ethernet data rounting topic to learn what committed means Capacity information is provided because different DS models have buffers of different size e Information on current data connection This partially doubles the data reflected by the status icons displayed in the device list and the status area of the main window Additional information provided by the routing mode dialog includes the IP address and the port number of the network host with which the DS has been is will be in a data connection Here is what these two fields show o After power up the fields show the IP address and port defined by the Destination IP address setting and Destination Port Number setting o If these default values are overridden by serial side pa
16. he maximum time gap between two consecutive characters recorded into the serial to Ethernet buffer exceeding which will trigger a break condition Break conditions are related to routing the data in the serial to Ethernet direction Intercharacter delay can be set in 10 ms increments Delay tracking is disabled when Maximum Intercharacter Delay is set to 0 e Timeout RX defines the timeout value of the serial port in Modbus Gateway mode The value is in milliseconds The default value is 200ms for a value of baud rate of 9600bps For lower baud rate is preferable to use a longer timeout value 4 8 2 Ethernet to Serial converter e Connection Timeout defines after how many minutes an idle connection is terminated Setting Connection Timeout to 0 disables automatic timeouts Setting Connection Timeout to any value in the 1 99 range enables automatic timeouts when no packets are transferred across a connection in either direction for a corresponding number of minutes the connection is terminated The device terminates TCP connection by sending an RST packet while UDP connections are simply discarded the other party is not informed in any way RCX LAN Wi Fi User Manual Page 8 16 T ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL Connection Timeout prevents an idle hanged connection from occupying the DS indefinitely thus keeping other network hosts from communicating with the DS Note that idle conn
17. i Fi User Manual Page 5 16 oo UL ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL the network If you decide to change the wireless network name from the default setting enter your new wireless network name in this field e Domain wireless communications and channels are tightly regulated in every country on Earth and this applies to Wi Fi networks as well Not every one of 14 pre defined Wi Fi frequencies is allowed to be used in every country It is your responsibility to set a correct domain for your Wi Fi device This is done through the Domain Supported domains are FCC EU JAPAN and OTHER The default value is EU European Union e TX Power the output power of the Wi Fi hardware can be adjusted in 12 steps The power value roughly corresponds to dB The lowest output power is 4 and the highest power is 15 Lower power reduces the current consumption of the Wi Fi module but not by much The default power value is 15 e Authentication select a wireless security setting Options are None WEP 64 bit or WEP 128 bit Select None to disable encryption to across the network Select WEP 64bits or WEP 128bits to limit communication to only those devices that share the same WEP settings e Password WEP A string containing new WEP key This is a HEX strings each character in the string represents one HEX digit The string must contain 10 HEX digits for 64 bit WEP and 26 HEX digits for 128 bit WEP Exces
18. line 5 Status LED The RCX LAN RCX WI FI has one status GREEN LED on top of the Device It is controlled by the internal circuitry 5 1 Status LED signals RCX LAN RCX WI FI feature two status LEDs Status Red SR and Status Green SG that display various states of device operation ROX LAN RCX WI FI states are indicated by way of playing LED patterns Patterns in this topic are represented graphically in the following manner Ae e 2 ag The pattern above means that both green and red status LEDs blink together three times The following pattern means that red LED makes one long blink followed by two short ones Parana 2AA ARA Status LED of the RCX LAN RCX WI FI shows a number of conditions listed below are all patterns 5 1 1 Patterns that are played once in response to a certain event e Powerup pattern This pattern is played once when the RCX LAN RCX WI FI is switched on 2 Bl 2 2 ae RCX LAN Wi Fi User Manual Page 14 16 ET MODUL2 LAN WiFi User Manual V1 0 23 03 2011 WWW QFP IT II QFP ENGINEERING 5 1 2 Patterns that are played repeatedly until replaced by another pattern e Ethernet port failure Indicates that the Ethernet port hardware is malfunctioning and network communications with the DS is not possible parn e 2 e IP address not obtained Occurs at startup when DHCP DH setting is 1 enabled and the DS has not yet obtained its IP address from the DHCP server pl Pl e Data connection i
19. lly ephemeral which means that they are always changing Therefore the DS will wait for the first programming UDP datagram to arrive o 1 port 65535 Notifications are always sent to the UDP port 65535 This option is useful when the DS is communicating with another DS In this case the port to send notifications to is fixed and known so there is no need to wait for the programming UDP datagram to arrive Notification Destination is irrelevant when the Notification Bitmask is set to is 0 because this means that no I O lines of the DS are monitored for changes so there will be no notifications to generate Notification Destination is also irrelevant when notifications are being sent inside the data TCP connection itself e Serial Interface serial port of the DS can operate in full duplex or half duplex mode Full duplex and half duplex here refers exclusively to the logical operation of the DS not to the hardware implementation of the serial port which depends on the DS model The setting only influences the operation of the serial port in the data routing mode When the serial port is in the serial programming mode it is always using the half duplex interface o 0 full duplex Suitable for RS232 communications RTS output and CTS input lines are used in a normal way i e for flow control between the DS and attached serial device when current Flow Control 1 enabled or signaling between the network host and attached serial device
20. nection at a time all conditions described here only apply to a situation when no data connection is established yet to current Destination IP address and current Destination Port Number o 0 immediately The DS attempts to establish an outgoing connection right after the power up After the IP address is obtained from the DHCP server if the DHCP setting is 1 enabled The DS will also make this connection persistent If the connection is closed aborted by the network host the DS will attempt to establish it again Connection timeout defined by the Connection Timeout CT setting still works in this mode when the current connection times out the DS aborts it and immediately establishes a new connection Such behavior auto repairs hanged connections o 1 on data or command The DS attempts to establish an outgoing connection when the first serial data is received into the serial port and committed OR when Establish Connection instruction is issued o 2 oncommand The DS attempts to establish an outgoing connection only when Establish Connection instruction is issued o 3 on command or DSR LOW The DS attempts to establish an outgoing connection only when Establish Connection instruction is issued OR when the DSR line of the serial port is brought LOW for at least 20ms Existing connection can always be terminated by using the Close Connection instruction or Abort Connection instruction With Connection Mode 3 on command or DSR L
21. on is not needed for the data being received by the serial device from the DS Characters with ASCII code matching that of escape character arrive from the DS in a normal way i e they are not doubled Notice that serial escape sequence works even when the serial port of the DS is closed i e when the Current Routing Mode is 0 Slave and the data connection is not established Closed merely means that the serial port is not accepting any data into its serial to network buffer The serial port is still listening for escape sequences even at this time When the DS is running with the Flow Control setting set to 1 Local and its serial port is closed the RTS line of the DS will be in the disabled state thus indicating to attached serial device that transmission is not allowed Therefore if the RCX LAN Wi Fi User Manual Page 13 16 oo UL ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL serial device needs to transmit an escape sequence it must ignore the state of RIS signal at that time Further behaviour of the RTS line while in serial programming mode is documented under serial Programming e Escape Character defines the ASCII code of character used in escape sequence Which escape sequence if any is used is defined by the Soft Entry setting Escape Character is irrelevant when the Soft Entry setting is 0 disabled e On the Fly command enables or disables on the fly command processing by the DS
22. otocol to an Ethernet Wi Fi using Modbus TCP protocol RS 485 channel 2 R5 485 channel 4 N Identifier Description Ethemet ResetROXanwiri _1 Negative supply Positive supply ee 3 Output supply for external devices RS 232 channel 1 Le 7 RS 485 TX channel 2 6 A RS 485 TX channel 2 Output supply for external devices 8 GND Ground 9 B RS 485 TX channel 4 RS 485 TX channel 4 Load resistance RS 485 channel 2 Load resistance RS 485 channel 4 ooooon Li L2 L3 L4 L5 Antenna SMA RS 232 channel 3 N Identifier Descriptor 1 Li Wi Fi status LED NOT oo 2 NG 2 L2 Channel 1 status LED TAU 3 0 D 4 CIS aiu BO 5 oo Fe ats 5 L5 Channel 4 status LED DIR 22 0 NG 6 L6 Status GREEN LED GNO 9 oo 10 We 7 L7 Status RED LED 2 Technical Specifications Below are the technical specifications of the RCX LAN W Fi Technical Specifications IDC 20 pin male connector Serial interface channel 1 Baud rate 300 115200 bps Signals TX RX CTS RTS DSR DB9 male connector Serial interface channel 3 Baud rate 300 115200 bps Signals TX RX CTS RTS DSR RS 485 serial interface channel 2 and 4 Four pole terminal block RCX LAN Wi Fi User Manual Page 2 16 iT ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT TLL Signals TX TX VO GND 10 100 Base T Ethernet RJ45 connector Ethernet Protocols IP TCP UDP ARP
23. p AAAA AAAA aAA e 5 1 3 When the data connection is established the following patterns are additionally displayed e Data is being routed no overruns detected This pattern is played when the data connection is established and the data is being routed through the RCX LAN W Fi PIA IE IE ee IE na ele ae RCX LAN Wi Fi User Manual Page 15 16 ET MODUL2 LAN WiFi User Manual V1 0 23 03 2011 WWW QFP IT II QFP ENGINEERING e Buffer overrun no data routing This pattern is displayed when the data connection is established and the routing buffer overrun has been detected within the present data connection PRIPIPP PEPPER PIPPI PIPIRIAR APPR EIPPIee e Buffer overrun data routing Data routing and overrun can be displayed at the same time 20 EE AE ee Ae ele Ee Ar PIRIRIAIP APPR EPPIee 5 2 Channel Status LED signals RCX LAN RCX WI FI feature one status LED for each channel and for the Wi Fi this LED is used only to RCX Wi Fi Status Green SG that display various states of channel operation 5 2 1 Patterns that are played repeatedly until replaced by another pattern e Idle Channel This pattern is displayed repeatedly on the LED Lx when the Channel x is in stand by 2 Bl 2 Bl e Connection Channel This pattern is displayed on the LED Lx when connection is established on Channel x ea af ae fap apa ea apa ARAR RR e Wi Fi Associated This pattern is displayed on the LED L1 when Wi Fi is associated PIRIRIA
24. pecified in the destination section of the dialog Exactly when the VSP attempts to establish an outgoing connection is defined by the selected connection mode Incoming connections are accepted from any IP address just like with the server routing mode o Client Only outgoing connections are allowed the VSP rejects all incoming connections o Gateway Modbus e Destination interface selects the network interface through which an outgoing network connection will be established Note This parameter is used only in RCX WI FI e Accept connection from defines whether the RCX LAN RCX WI FI will accept incoming data connections from any network host filtering disabled or specific host only filtering enabled o When Source IP Filtering is 0 disabled the RCX LAN RCX WI FI will accept an incoming data connection from any network host RCX LAN Wi Fi User Manual Page 9 16 T ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL o When Source IP Filtering is 1 enabled the RCX LAN RCX WI FI will accept an incoming data connection only from host whose IP address matches the one specified by current Destination IP address This setting is irrelevant when current Routing Mode is 2 client because in this mode the DS won t accept incoming connections at all e Port this setting defines the Data Port on which the DS is accepting incoming data connections For UDP communications outgoing UDP datagrams are also s
25. ports while Channel 1 and Channel 3 are connected to RS485 serial ports 4 8 1 Modbus Gateway e Connection Timeout connection parameter sets the timeout in minutes for the data connections between the VSP and the RCX LAN RCX WIL FI If no data is transmitted across the data connection TCP or UDP for a specified number of minutes the VSP aborts the connection Setting connection RCX LAN Wi Fi User Manual Page 7 16 MT ET MODUL2 LAN WIiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL timeout parameter to O disables the feature and connection never times out If omitted this parameter defaults to 5 minutes e Transport Protocol selects which communications protocol TCP IP or UDP IP will be used by the VSP for data communications with the RCX LAN RCX WI FI In the Gateway Modbus the communications protocol is TCP IP e Routing Mode select a mode operation of the RCX LAN RCX WI FI e Accept connection from defines whether the RCX LAN RCX WI FI will accept incoming data connections from any network host filtering disabled or specific host only filtering enabled o When Source IP Filtering is 0 disabled the RCX LAN RCX WI FI will accept an incoming data connection from any network host o When Source IP Filtering is 1 enabled the RCX LAN RCX WI FI will accept an incoming data connection only from host whose IP address matches the one specified by current Destination IP address e Port defines the Data Por
26. rameters and instructions a k a modem commands then the fields show new overriding values o While the data connection is established and after it is closed aborted the fields show the IP address and port of the network host with which this connection is was established Notice that this may be different from the above if the DS has accepted an incoming connection e Current serial port setup This data may be of interest because it will not necessarily match the serial port setup defined by the serial port related DS settings The values of settings can be overridden by the network side parameters a k a on the fly commands Therefore the routing status dialog can be used to verify actual current serial port setup e Current state of RS232 control lines The state of control lines is displayed in the opposite polarity So if the state of RIS line output is shown as HIGH then this means that the DS is ready to receive the data from attached serial device 4 5 Password The Password page is used to change the login password and the DS Manager password 4 6 Initialize The Initialize is used to reset the RCX LAN RCX WI FI the device returns to factory default 4 7 Reboot The Reboot is used to take effect the changes 4 8 Channel Settings Each RCX LAN RCX WI Fl s channel can be configured to operate as a Modbus Gateway or a Ethernet to Serial converter In particular Channel 0 and Channel 2 are connected to RS232 serial
27. rial programming mode Disables or enabled serial programming mode entry through escape sequence and selects escape sequence type O O 0 disabled Serial programming mode entry through escape sequence is disabled 1 type 1 Type 1 escape sequence consists of three consecutive escape characters ASCII code of escape character is defined by the Escape Character setting For the escape sequence to be recognized each of the escape characters must be preceded by a time gap of at least 100ms previous data lt 100ms gt E C lt 100ms gt E C lt 100ms gt E C If the time gap before a certain escape character exceeds 100ms then this character is considered to be a part of the escape sequence and is not recorded into the serial to Ethernet buffer If the time gap before a certain escape character is less than 100ms than this character is considered to be a normal data character and is saved into the serial to Ethernet buffer Additionally escape character counter is reset and the escape sequence must be started again The following example illustrates one important point escape characters are shown as Supposing attached serial device sends the following string ABC lt 100ms gt a lt 100ms gt aaDE First two escape characters is this example had correct time gap before them so they were counted as a part of the escape sequence and not saved into the buffer The third escape character did not have a co
28. rrect time gap so it was interpreted as a data character and saved into the buffer The following was routed to the network host ABCaDE The side effect and the point this example illustrates is that first two escape characters were lost they neither became a part of a successful escape sequence because this sequence wasn t completed nor were saved into the buffer 2 type 2 Type 2 escape sequence is not based on any timing Escape sequence consists of escape character defined by the Escape Character setting followed by any character other than escape character To send a data character whose ASCII code matches that of escape character the serial device needs to send this character twice This will result in a single character being saved into the serial to Ethernet routing buffer It is the responsibility of the serial device to parse through the data it sends to the DS and double all characters whose code matches that of escape character Example the following sequence will make the DS enter the serial programming mode that is if current escape character is not D ABCaD In the sequence below two consecutive escape characters will be interpreted as data data routed to the network host will contain only one such character the DS will automatically eliminate the second one ABCaz lt should be noted that attached serial device should parse the data and double certain characters only for the data it sends to the DS Reverse operati
29. s closed This pattern means that no data connection TCP or UDP with any network host is currently established so the RCX LAN W F1 is idle 2 p 2 Bl e Sending ARP Displayed when the RCX LAN W i Fi is sending ARP requests to find out MAC address of the destination network host with which the RCX LAN Wi Fi is about to establish a connection FAA AAAA AAA e TCP connection is being opened Indicates that TCP connection either incoming or outgoing is being established i e SYN SYN ACK exchange is in progress AA e 2B 2 e TCP connection reset rejected by the network host Means that the TCP connection has been reset using RST packet by the network host to which the RCX LAN Wi Fi has tried to connect A ge AA e e Link Server login in progress Means that the DS has already established TCP connection to the Link Server and is now attempting to login 2 el 2 2 2 Bl el e Link Server login failed Means that data connection to the Link Server could be established but the server has rejected this RCX LAN W Fi 2 Bl 2 2 aee e Data connection is established or being closed Means that data UDP connection or TCP connection is currently established or that TCP connection is being closed i e FIN ACK FIN ACK exchange is in progress PRIPIPPIPAPPPEPPE PIPPI e Error Mode This pattern is played repeatedly at high speed BAAR R AR AA Ae eee e Serial programming Mode This pattern is played repeatedly at slow speed FARA RAPA AAA 2
30. sive digits are ignored Missing digits are assumed to be 0 e Ad hoc Network the Wi Fi interface can create an ad hoc network of its own and have other devices associate with you e Wi Fi Channel Channel on which the new ad hoc network will operate Note This section applies only to RCX WI FI 4 3 Wi Fi Status This screen displays the current Wireless LAN settings on your RCX LAN RCX WI FI The information in the dialog is updated each time Refresh button is pressed Wi Fi Status dialog displays the following information e Wireless In this section there are information about the wireless LAN whose name appears in the SSID domain o Wireless indicates the hardware Wi Fi status Enabled or Disabled SSID contain the name of the target network Status indicates whether the Wi Fi interface is associated with the network or no Strength indicates the strength of the signal received from the network Authentication indicates the wireless network security setting o Wireless Channel contain the number of the channel on which this network operates e Wi Fi Networks Wi Fi Networks is the list of discovered wireless networks For each network in the list on the right of the name as reported the strength of the signal received from this network Note This section applies only to RCX WI FI O O O O 4 4 Routing Status This screen displays the current LAN settings on your RCX LAN RCX WI FI and the current RCX LAN RCX WI FI operation This
31. t on which the RCX LAN RCX WI FI is accepting incoming data connections For TCP communications the RCX LAN RCX WI FI accepts incoming data connections on the data port but establishes outgoing connections from a pool of ephemeral ports in the 10000 10255 range port number is incremented with each new connection Port 65535 is excluded from the allowable range because port 65535 is a programming port of the RCX LAN RCX WI FI command UDP datagrams are sent to this port Technically this only affects UDP communications TCP connections should still be able to use this port but the port 65535 was not allowed to be selected as the data port from the early versions of RCX LAN RCX WI FI firmware so this restriction is now preserved for historical reasons e Slave Address defines the address of the device on Modbus serial line The default value is 191 e Serial Interface serial port of the RCX LAN RCX WI FI can operate in full duplex or half duplex mode In the Gateway Modbus the value is half duplex RS485 e Baud rate defines the baud rate of the serial port of the RCX LAN RCX WI FI e Parity defines the parity mode of the serial port of the RCX LAN RCX WI FI RCX LAN RCX WI FI hardware does not have an option of two stop bits In the Gateway Modbus mode the default value is EVEN e Data bits defines the bits byte mode of the serial port of the RCX LAN RCX WI FI The default value is 8 bits byte e Maximum Intercharacter Delay defines t
32. when Broadcast UDP is 1 enabled the DS will accept and route the data received in broadcast UDP datagrams as if these packets were addressed directly to this DS Broadcast packets must still be addressed to the correct Port Number DS will ignore broadcast UDP packets when Broadcast UDP is 0 disabled This setting only allows disallows the reception of broadcast UDP packets and has no influence over whether the DS can send out its own broadcast UDP datagrams or not This Setting is irrelevant when current Transport Protocol TP is 1 TCP because TCP protocol cannot use broadcast packets to carry data e Inband Command setting defines whether inband TCP programming is enabled or disabled This Setting is irrelevant when the current Transport Protocol is 0 UDP because inband command passing is only possible when TCP IP is used for data connections between the network host and the DS e Routing Mode select a mode operation of the RCX LAN RCX WI FI Routing Mode drop down box provides four choices o Server Only incoming connections are accepted the VSP never attempts to establish an outgoing connection to the DS There is no restriction on which DS can connect to the VSP connection from any IP address will be accepted as long as the DS is connecting to the correct listening port using correct transport protocol o Server client Both incoming and outgoing connections are allowed Outgoing connections are established with the destination s
33. ys be set to 1 and since the parity bit is always transmitted in front of the stop bit this will have the same result as having two stop bits The DS transmits the serial data with the parity bit correctly set but does not verify correctness of parity bits in the received data Parity is always off when the serial port is in the serial programming mode e Data bits defines the bits byte mode of the serial port of the DS when in the data routing mode 8 bits byte are always used when the DS is in the serial programming mode e Maximum Intercharacter Delay defines the maximum time gap between two consecutive characters recorded into the serial to Ethernet buffer exceeding which will trigger a break condition Break conditions are related to routing the data in the serial to Ethernet direction See serial to Ethernet data routing for more information Intercharacter delay can be set in 10 ms increments Delay tracking is disabled when Maximum Intercharacter Delay is set to 0 Intercharacter delay is not counted when the Flow Control setting is 1 enabled and the DS is holding the RTS line in the HI state thus indicating to the attached serial device that the DS is not ready to receive the data This is done to prevent the DS from generating the break conditions on time gaps caused by the DS itself RCX LAN Wi Fi User Manual Page 12 16 oo UL ET MODUL2 LAN WiFi User Manual Z QFP ENGINEERING V1 0 23 03 2011 WWW QFP IT LLL e Soft entry into Se
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