lap-485pc protocol converter
Contents
1. AMERICAN POWER LAP 485PC PROTOCOL CONVERTER Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com ATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC LAP 485PC Modbus RTU ASCII LAP 485 to Modbus Ethernet LAP 485PC is a microcontroller unit It is designed to exchange data over the Ethernet 10BASE T and 100BASE T network using the equipment which is provided with the LAP 485 interface and establishing a Modbus network The standard network mapping using the 485 is provided in The unit fulfills the functions of a Modbus Server for switching the Modbus clients to the Ethernet network It redirects the Modbus requests from the clients to the units in the Modbus network and returns their answers to the clients Functioning 32 bit RISC processor with ARM architecture provides data routing between the Modbus RTU ASCII LAP 485 network and Ethernet 10base T 100base T network The operating speed and availability of channels for direct access to the memory allows processing the high speed data flow Indicators provide information on the connection status and data transfer over the Modbus and Ethernet networks The Reset button allows of restart the unit without switching it off the mains or do a factory reset The unit has non volatile memory to save settings Every unit is provided with a global2. 485 indicator is deactivated if the data is received or the waiting time is out If the response is provided in a proper format LAP 485PC transmits it to the client that requested it In case of any format errors an Error indicator shall become activated for 0 5 seconds and no response is provided to the client If no response is provided LAP 485PC generates and transmits the proper Modbus exemption code to the client code 11 7 SETTING 7 1 General information All parameters are saved at the power off Unit configuration can be done in two ways through WEB interface through Modbus interface Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 16 ATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL WARNING ANY CHANGES IN UNIT CONFIGURATION MAY RESULT IN BLOCKING OR OBSTRUCTION WHILE TRYING TO REACH THE UNIT OVER THE NETWORK In this case all parameters should be factory reset see Section 3 2 7 2 Parameters of LAP 485PC A collection of parameters available via Modbus protocol is provided in Table 3 The inner structure of any collection of parameters is similar to the structure of collection which is described in table 7 apart from start address The presentation format of parameters in Modbus registers is detailed in Table 4 All parameters to control the current operating mode of t
3. Maximum number of connected units within the Modbus network LS Readiness time upon switching the unit to the mains sec no morethan 1 Utilized current in case of 220 V mA at most Co Terminal bus specifications cross section of switched conductors mm 03 3 maximum effort torque on screw terminals Nm 0 4 Level of protection unit IP30 terminal bus IP20 e Protection class against electrical shock Pt Permissible pollution density Overvoltagecategoy Pollutants in the amount none which is not to exceed the maximum permissible concentration Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com ATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 2 2 Operating conditions This unit is designed to operate or to be stored under conditions resulted in Table 2 Table 2 Operating and storage conditions Operati perature Relative air humidity at 25 3 STRUCTURE AND FUNCTIONING 3 1 Structure 3 1 1 Design The unit has a standard plastic case which can be attached to the DIN rails with the width of 35 mm The unit drawing together with the overall and setting dimensions is provided in Figure 2 TET T gto m gg Ethernet 1 10 100 A L B ENT Sh ka mes Figure 2 Overall dimensions of
4. misconfigured unit to the network may affect the communication level of other units on the network As a rule all connections to a network of more than 2 units are carried out by the qualified personnel network administrator only 1 IP addressing When units are communicating over Ethernet network using TCP IP protocol every unit is using a set of IP addressing settings to identify the sender and receiver of the data The unit memory contains a personal and unique within a single subnet IP address four bytes are written as four integers separated by dots in the range of 0 255 subnet mask which is the same for all units within the subnet written similar to IP address and IP address of the gateway which is used to communicate with other networks Proper communication between units of a subnet is possible under several conditions 1 All units of a subnet have similar mask Most of small LANs are using 255 255 255 0 mask 2 Mask starts with a group of bits set to 1 followed by a group of bits turned to O 3 All bits set to 1 in the mask are similar for all the IP addresses of units in subnet and indicate the subnet address 192 168 is most frequently used address in LANs for the mask 255 255 255 0 The third byte may be used as a subnet number in a complex LAN In smaller LANs the third byte is usually equal to O Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpow
5. parameters detailed in Table 7 If the password is incorrect the password request shall be displayed once again Click Save after making changes to the settings This will check all the changed parameters If no errors is detected new parameters will be stored in the memory new parameters will become effective upon the following restart activation of the unit In case of any errors detected upon clicking the Save button none of the parameters is saved while the names of erroneous parameters are highlighted in red Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 22 EL TIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL Click Factory reset to restore the default value of parameters Click Restart to stop all connections and interrupt all receive transmit operations with the following restart of the unit In case of any changes to the parameters either introduced or stored in the memory these changes shall be implemented Note If the addressing parameters in Ethernet network MAC address address DHCP settings are modified and saved the browser may not load the page after the restart of the unit by pressing the Restart button This can happen as the browser continues to reply over the previous address In this case the connection should be made anew Clicking the Exit button the will close the s
6. the access returns to locked mode Note The setup mode is provided over an unprotected connection upon entering the correct password The users are strongly recommended to enable the IP connections filter for configuration option of LAP 485PC in case of network configuration especially for networks without other types of protection The unit protection system is not designed to counter malicious network attacks especially those which are not trying to get access to the unit but to block it instead eIn case of complex and large networks especially when providing access to the LAP 485PC via Internet the users are recommended to separate the unit from unprotected networks with standard protective equipment router configured to filter the transmissions Firewall etc Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 32 Ay LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL APPENDIX B Character codes under ASCII standard a MINUM all codes are provided in decimal numeration system Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 33 SOLUCIONES EN ERERGIA Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpow
7. AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL Indicators provide information on the connection status and data transfer over the Modbus and Ethernet networks The Reset button allows of restart the unit without switching it off the mains or do a factory reset eto do a factory reset press and hold down the reset button R for 8 seconds Error indicator shall be activated in 2 seconds the unit shall be restarted and the indicator LAP 485 shall be activated and deactivated after 8 seconds of holding down the button release the R button eto reset the unit while saving user configurations press and hold down the reset button R release the R button when Error indicator shall become activated Note when restarting the unit the clients may need to renew the connections The unit has a memory to save settings Every unit is provided with a globally unique MAC address during the production and can be connected to local networks with a protected access to Internet D Control panel LED module unit status indication Reset button Ethernet 10base T 100base T Processor ARM cortex m3 Modbus RTU ASCII Figure 4 Structural diagram of the unit Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 12 ATIN AMERICAN POWER LAP PROTOCOL CONVERTER L
8. AP 485PC USER MANUAL 4 MAINTENANCE AND SAFETY MEASURES 4 1 Safety measures 4 1 1 LAP 485TC IS OPERATING A POTENTIALLY LETHAL VOLTAGE Power off the unit as well as any other units connected to it before maintenance trouble shooting or installation works 4 1 2 The unit is not designed for operation under impact or vibration conditions 4 1 3 Do not expose the inner electric components of the unit as well as input contacts of terminal blocks and sockets to water 4 1 4 Do not operate the unit in aggressive environment with the presence of acids alkalies oils etc in the air 4 1 5 Switching adjustment and maintenance of the unit should be conducted by the qualified personnel who is familiar with the provisions of this user manual 4 2 6 The following regulations should be enforced while operating and maintaining the unit GOST 12 3 019 80 Operational regulations of Electrical Installations and Safety Regulations for the Operation of Electrical Installations 4 2 Maintenance procedure for LAP 485TC Suggested maintenance interval every six month The maintenance procedure includes visual inspection to verify the connection of cables to the LAP 485TC terminals as well as the absence of fractures and cracks on the case All safety regulations provided under section 4 1 should be enforced during the maintenance Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latiname
9. AP 485PC USER MANUAL To reset the saved parameters to factory settings write 3 instruction for Restoring to factory in the instruction register Restart the unit for the saved settings to take effect To restart via Modbus interface write 1 instruction for Restarting in the instruction register To exit the setup mode write 0 instead of any character in password input register This will clear all the password input registers and instruction register turn the values to 0 8 COMPLETE SET LAP 485PC is supplied with 485 protocol converter 1 piece User manual passport 1 piece Cable for Ethernet connection 1 piece Shipping box 1 piece 9 TRANSPORTATION AND STORAGE LAP 485PC in the shipping box should be stored indoors at a temperature of 45 to 70 and relative humidity of no more than 80 with no vapors available in the air capable of producing harmful effect on the shipping box and unit materials When transporting LAP 485PC the user should provide some protection against mechanical damage Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 24 ATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL APPENDIX A Switching to Ethernet LN WARNING Switching the unit to Ethernet network requires mutual coordination of settings on the connected devices Connecting the
10. Center Network and Sharing Center 5 In the task bar on the left select Change adapter settings Next perform the following steps 1 In the Connections window select the desired connection via an adapter with the addressing that you want to change Many computers have only one adapter and one connection which will be displayed in this window If the window shows several connections select the connection you want using the adapter name in the information on connection or contact your system administrator Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 2 Ay LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 2 Click the icon of the connection with the right button and select Properties in the drop down menu The Properties window opens see Fig A 3 3 Select Internet Protocol TCP IP from the list of connection components in the next window Make sure that the component is enabled flagged in the list Click Properties The TCP IP properties window opens see Fig A 4 4 Select Use the following IP address 5 Specify the address in the IP address field within the range from 192 168 0 1 to 192 168 0 255 except for 192 168 0 111 which is used by LAP 485PC 6 Specify 255 255 255 0 in the Subnet Mask field 7 The fields Default Gateway Preferred DNS server and Altern
11. Server is a unit which performs specific functions at the request of other units e ASCII is a table of standard codes for information interchange e Ethernet is a standard for packet network communication and transmitting data between units e g PCs HTTP is a protocol for transferring Web pages and other data over client server technology e Internet is a global routing system of units for storing and transferring data e IP protocol is a routable protocol for transferring data over Ethernet It is a part of TCP IP and used for Internet e IP address is a node address which is unique within a single network operating over the IP protocol e Pv4 is a four byte IP address Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 5 ATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL MAC address is an address used for device authentication during Ethernet transmissions It is usually unique although qualified personnel can change it under certain circumstances e MAC 48 is a six byte MAC address e Modbus is a standard and protocol for packet communication over the client server technology for industrial electronic units e Modbus RTU is a communication protocol of the unit for bite wise transfer of the package e Modbus ASCII is a communication protocol of the un
12. Windows OS Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 29 Ay LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL Ceonctea i TCPZIP IP 197 168 0 2 255 2565 255 O CO DNS cepeepa UNS ONS Po Figure TCP IP properties window Windows OS Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 30 AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 3 Switching to Internet N WARNING The user is strongly recommended to connect the unit to Internet un
13. ative DNS server should be left blank 8 Press OK to close the Protocol Settings window 9 Press OK to close the Connections Settings window 10 If prompted by the OS to restart the PC after closing the windows answer yes Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 28 Ay LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL si WORKGROUP EJE3 3Com 3C905Tx based Ethernet 5 TCP IF Figure Connection properties window
14. ber of critical errors Number of identified errors failures resulting in a restart of the unit during the whole period of operation Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 18 Ay LATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL Table 7 Unit configuration settings Addressing in the Ethernet network Static IP address 192 1680111 IP address the unit in Ethernet network shall be equal to this 500 503 add value if dynamic addressing is disabled or not available Subnet mask 255 255 2550 Used only together with a static IP address 504 507 55 ask Gateway P address 192 168 0 1 Used only together with a static IP address or as an IP address filter for DHCP server Enable dynamic 0 preset IP address mask and gateway is used for addressing addressing via 1 in Ethernet DHCP server 1 DHCP network server is used by the unit to determine IP address mask and gateway parameters for static 1 1 C addressing are used if server is unavailable Enable IP Used if dynamic addressing is enabled address filter of 0 unit receives addressing data from the first DHCP server to the DHCP server respond 1 unit receives addressing data only from DHCP server with IP address of the gatewa 0 unique value for every unit stored in the memory shall be used as a MAC address 1 manually
15. depending on the bit rate Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 21 ATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL ET NN 0 Miscellaneous Enable periodic os o 0 periodic restart restart of the unit 0 1 1 unit restarts at a specified i m aaa interval min Used to amp the setup mode for Modbus TCP Any string of String of 11111 5 to 20 SES can be used as a password It may not characters contain spaces or special characters listed in quotes below Cu dul ees 7 3 Configuring LAP 485PC through WEB interface WEB browser is used for setting via WEB interface Write the unit IP address in your browser factory setting 192 168 0 111 and proceed to the specified address Note If the browser is set to use the proxy server the access to the unit over local network shall be granted only after adding the IP address into the exceptions list as indicated in the browser documentation This will open home page with tabs for transferring into the other modes Select Settings to start the configuration of unit Ethernet network Password request shall appear before granting access to setup mode factory setting 11111 Enter password and press Enter If the password is correct you shall be granted access to the setup mode Settings page appears with a list of
16. der the supervision of the LAN system administrator and or representative of Internet service provider Use the following guidelines to connect the unit to Internet acquire a dedicated line with a static IP address from your Internet Service Provider hereinafter referred to as ISP several connection options are possible if your ISP binds the connection to MAC address and the given Internet connection was already used by personal computers or other units a connect the unit directly to the PC see Section 5 2 1 to learn the MAC address of the unit see Section 7 Inform the ISP on the change of MAC address to the MAC address of the unit b determine the MAC address for Internet connection from the unit settings which was previously using this connection or acquire it from your ISP Connect the unit directly to the PC and change the parameters Enable manual MAC address and Manually set MAC address to have the manual MAC address enabled and values of the unit correspond to MAC address with an Internet connection binded direct connection of the unit to the ISP cable is not recommended in case of a router connection the ISP cable is connected to the Uplink socket on the router It is usually marked with color and has no numbers The marking depends on the router manufacturer see the router documentation The straight through supplied Ethernet cable is used for connecting unit to the router Set the router for Interne
17. equesting for a connection can be connected instead of the client who provided no requests over the longer then preset pernod Used if replacement of non active clients is enabled 529 query Enable replacement of Aliud 0 8999 requesting for a connection can be connected instead of the last ET connected client if the hold time is more than a preset time The maximum hold time of the last 0 600 000 60 000 Used if the queue is enabled for the last connection to Modbus 531 532 connection to TCP Modbus TCP msec 0 Modbus TCP connection is maintained regardless of the connection hold time 530 1 if all connections to Modbus TCP are busy the new client Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 20 Ay LATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL Modbus network Own Modbus 0 unit forwards all Modbus TCP requests into the Modbus identifier of the unit 0 247 111 network unit registers via Modbus TCP are unavailable 1 247 units responds to Modbus TCP requests bearing the given Modbus identifier without forwarding them to the Modbus network Bit rate in Modbus Used in case of data exchange between the units in Modbus network bit sec network the same value for all units in Modbus network Used in case of data exchange between the units in Modbus network the same value
18. er com www latinamericanpower com 25 ATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 4 A set of bits in IP address of the unit which 15 set to 0 in the mask is unique to each unit within the same subnet 5 In most cases the unit like router which is already communicating with other networks is switched to the network This unit often gets the following address 192 168 0 1 192 168 0 100 or 192 168 0 101 In this case other units in the network shall have this IP address of the unit as the gateway address This address is not necessary for communication between units in a subnet and is only used to connect units of one subnet to units of other networks Factory addressing settings for LAP 485PC Interface Converter are listed in Table A 1 Table 1 Factory settings for LAP 485PC addressing 192 168 0 111 255 255 255 0 192 168 0 1 In order to communicate with LAP 485PC which is set to factory settings the client unit or any other units on the same subnet should have 255 255 255 0 as a mask and address starting with 192 168 0 The fourth byte of the address can take any value in the range from 1 to 255 except for 111 If the connection between LAP 485PC and a client unit is not provided directly but via a network with a number of units the mentioned address can not be equal to any of the addresses of other units on the subnet If network has several units with the mask and the first
19. er com www latinamericanpower com 34
20. ery register one byte 0 255 IP mask In every register one byte 0 255 set of six byte MAC 48 address from left to address right Table 5 Parameters to control the current operating mode of the unit of characters Configuration mode is available upon entering the valid 100 119 password 0 3 Control writing in the 1 Restart unit restart 120 command configuration 2 Save save the changed settings on the Modbus mode 3 Factory reset reset the unit to factory settings Table 6 Parameters to determine the current condition of the unit Description iguration mode Current IP address IP address of the unit in Ethemet network 122 125 Current MAC address MAC address to authenticate the unit in Ethernet network 126 131 Number of Modbus TCP clients Number of connections provided over the Modbus TCP protocol Maximum number of Modbus TCP Total number of possible connections to Modbus TCP ients Number of minutes since the start Modbus TCP loading requests sec Number of requests processed in a second In Number of Ethernet network Number of incoming buffer overflows for Ethernet which may result congestions in a data loss since the start Number of communication errors Number of identified errors connection communication after which work was continued since the start Number of periodic restarts Number of preset restarts during the whole period of operation Num
21. etup mode and a password request appears once again 7 4 Configuring LAP 485PC through Modbus interface Setting via Modbus interface shall be provided if the unit is connected over the Modbus client which is supporting the Modbus TCP protocol The connection is established using its IP address factory setting 192 168 0 111 with the indication of Modbus identifier factory setting 111 Write the password string into the password input register see Table 5 before setting parameters Factory set password is 11111 i e write 49 ASCII code for one to record the factory set password to registers 0 4 If the password is correct the mode register see Table 6 takes the value of 1 setup mode The instruction register see Table 5 as well as registers for the collection of Modbus customizable parameters see Table 7 are available for writing in the setup mode When the required value is written to the registers of customizable parameters write 2 instruction for Saving in the instruction register The accuracy of values for the stored parameters can be checked by comparing the collections of customizable parameters and saved parameters If collections are the same new values and settings shall be accepted and saved Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 23 ey ATIN AMERICAN POWER PROTOCOL CONVERTER L
22. for all units in Modbus network 0 unused byte is completed with 2 stop bits 1 byte is completed with panty bit and 1 stop bit Enable the odd Used in case of data exchange between the units in Modbus even check network if odd even check is enabled The same value for all to verify odds units in Modbus network Used in case of data transfer via the Modbus network in RTU Response time 0 6 20 mode Waiting for a response is terminated if the first byte of the from Modbus RTU response has not been received within the given time after msec sending the request The response is always expected longer then time of silence between frames time of silence depends on the bit rate and shall be equal to the time required for transmitting 3 5 bytes or 1 75 msec for bit rate over 19 200 Exchange mode in Modbus network the same value for all Enable ASCII units in Modbus network exchange in 0 exchange mode format 1start bit 8 data bits 1 parity Modbus network bit or stop bit or 1 stop bit total 11 bits 1 ASCII exchange mode format 1start bit data bits 1 parity bit or stop bit or 1 stop bit total 10 bits Used in case of data transfer via the Modbus network in ASCII mode Waiting for a response is terminated if the subsequent byte of the response has not been received within the given time as indicated for the reception of response Waiting time shall not be less then time required for transmission of a single character
23. he unit available for read and write are provided in Table 5 All parameters to determine the current condition of the unit available for read only are provided in Table 6 All parameters available in the configuration mode only are provided in Table 7 Table 3 Collection of parameters available via Mobdus protocol Address read onl settings further used as the restart read only Fixed collection which can be activated as shown in 400 46 settings sections 7 3 and 7 4 read only All parameters in Table 7 which can be modified and 500 settings i rated as described in Section 7 4 reading writinc Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 17 Ay LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL Table 4 Presentation format of parameters in Modbus registers Range of values Description 0 65535 Integer 16 bits in a standard range of Modbus register ET 0 4294967295 in two registers Integer number which can not exceed the limit Number Der for Modbus register 65535 Set of values each of which is equal to code lof In every register ASCII character the ASCII character see Appendix B If the ep 2 of the string for the code or 0 end of string string is shorter than maximum length last character is followed by the code 0 given parameter IP address In ev
24. it for the transfer of package in the form of ASCII symbols e Modbus TCP a protocol for transferring Modbus packages under the standard e LAP 485 EIA 485 is a network standard for communicating units over the twisted pair e TCP IP is a standard and a set of protocols for transferring data along the networks with delivery verification e WEB is a system for accessing documents on the server used in the Internet WEB page is a document file recourse which is available on the Web server WEB browser is a WEB server client for accessing the WEB pages which is primarily using the HTTP protocol Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com ATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL 1 PURPOSE LAP 485PC is a microprocessor unit It is designed to exchange data over the Ethernet 10BASE T and 100BASE T network using the equipment which is provided with the LAP 485 interface and establishing a Modbus network The standard network mapping using the LAP 485PC is provided in Fig 1 The unit fulfills the functions of a Modbus server for switching the Modbus clients to the Ethernet network It redirects the Modbus requests from the clients to the units in the Modbus network and returns their answers to the clients LAP 485PC has flexible addressing withi
25. ly unique MAC address during the production and can be connected to local networks with a protected access to Internet Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL CAUTIONS Carefully study the user manual before using the appliance Place the unit under operating conditions and wait at least 2 hours before connecting it to the electricity mains not use abrasives or organic compounds alcohol gasoline solvents etc for cleaning NOT OPEN AND REPAIR THE EQUIPMENT YOURSELF It may contain energized parts DO NOT OPERATE THIS UNIT IN CASE OF ANY MECHANICAL DAMAGE TO THE CASING j DO NOT EXPOSE THIS PRODUCT TO WATER OR OPERATE IN A HIGH HUMIDITY ENVIRONMENT This is a safe in service unit if complying with operating procedures Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com LATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL CONTENT 1 Purpose 2 Specifications 2 1 Main specifications 2 2 Operating conditions 3 Structure and Functioning 3 1 Structure 3 1 1 Design 3 1 2 Display and control 3 2 Functioning 4 Maintenance and safety measures 4 1 Safety measures 4 2 Main
26. n the Ethernet network overloading MAC address static and dynamic IP address access protection over the Ethernet network password for configuration mode IP address filter for setting and switching to the Modbus network edifferent data transfer modes for Modbus network RTU and ASCII with without odd even check wide range of transmission speeds selectable delay Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com ATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL Figure 1 Network mapping with the unit Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com Ay LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 2 SPECIFICATIONS 2 1 Main specifications Main specifications are resulted in Table 1 Table 1 Main specifications of the unit Operating supply voltage VAC po SSS Voltage to maintain normal operation V alternating current 100 250 direct current 140 350 Data Exchange Interface over the Ethemet network 10BASE T 100BASE T twisted pair Supported Ethernet protocols Maximum number of connections over the Modbus TCP protocol Integrated servers Modbus server HTTP server Data Exchange Interface over the Modbus network cc a Supported Modbus protocols Modbus RTU Modbus ASCII
27. nit shall start initiating transceivers Both indicators become deactivated in 0 5 seconds and the unit proceeds to perform the server functions Ethernet network connection may take more time depending on the settings of the unit as well as other units connected to the network WARNING CONTINUOUS ACTIVATION OR FLASHING OF ERROR INDICATOR IN THE ABSENCE OF CONNECTIONS TO THE UNIT INDICATES UNIT MALFUNCTION Ethernet network connection pending The network connection is established if Ethernet indicator becomes activated Flashing of Ethernet indicator stands for transmitting data over the network 6 2 Operating LAP 485PC over the HTTP protocol LAP 485PC waits for a connection to an Ethernet network using the HTTP protocol on port 80 PC connection can be established using the WEB browser When a client connects to port 80 the unit starts expecting requests for HTML pages These requests may contain certain parameters In case of a valid request those parameters are processed and the client receives the text of a selected HTML page In case of a request without an indication of certain page the client is returned to the title page When the page is transferred the unit deactivates the client and awaits for further connection 6 3 Operating LAP 485PC over the Modbus TCP protocol While operating the LAP 485PC waits for a connection to an Ethernet network using the Modbus TCP protocol on port 502 The connection port for M
28. odbus TCP can be changed by the user PC connection can be established using any software Modbus TCP of the clients Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com T3 AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL When a request for client connection to the Modbus TCP port is received the unit starts verifying the client s IP address if connection filtering over IP is activated If this address does not correspond with the preset value the connection is rejected Otherwise the unit starts checking the list of available connections In case of no available connections the unit depending on the configuration can connect a new client instead of the previously connected one if no activity of the client was registered over a set period of time or if the connection is maintained longer than prescribed When a client is connected to a Modbus TCP port the unit adds it to the internal list of clients the number of clients cannot be greater than provided under specifications In case of any request from the client if the request is addressed to LAP 485PC the unit processes it and provides a response to the client If the request is addressed to another unit the unit sends the request into the Modbus network and waits for a response from a unit on the network LAP 485 indicator is activated in this case LAP
29. ricanpower com www latinamericanpower com 13 ey LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 5 SWITCHING OF LAP 485TC The unit is switched according to the diagram see Fig 5 1 Switch the cable connection with Modbus network twisted pair cable of Cat 1 or higher to the LAP 485 socket and Modbus network or directly to the unit with LAP 485 interface Note Contact A is designed for transferring non inverted signal while contact B is used for the inverted signal 2 Switch the cable connection with Ethernet network supplied to the Ethernet socket and Ethernet network Any connection peculiarities depending on the type of network are resulted in Appendix A 3 Switch the power cable connection copper stranded conductor cable with the cross section of 0 75 mm2 and maximum operating voltage of no less than 380V to 220 socket and then connect the cable to the power supply 220V 50 Hz cera Ethernet T base T TOObase T Figure 5 Unit connection diagram Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 14 Ay ATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 6 OPERATING LAP 485PC 6 1 General information Powering up the unit will activate Error and LAP 485 indicators while the u
30. set value is used for MAC address manually set Unique for Used if manual set MAC address is enabled for the MAC address address every unit authentication of unit in the Ethernet network Enable manually set MAC address m 0 0 0 Latin American Power Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com Ay LATIN AMERICAN POWER PROTOCOL CONVERTER LAP 485PC USER MANUAL Switching to Ethernet network Connection port for 1 65535 Used in case of TCP connection to the unit via Ethernet to Modbus TOP exchange data over Modbus TCP protocol IP address of gs IP address for which one connection via Modbus TCP is primary client 19216802 reserved Address which is used for unit configuration 0 setting parameters Modbus interface or WEB interface from any address password protected 1 setting parameters via Modbus nterface or WEB interface is only allowed from the IP address of the main client 0 Modbus TCP connections are available from any address 1 any Modbus connections are available only from the IP address of the main client 0 Modbus TCP connection is maintained regardless of the 1 time period between requests from the client 1 if all connections to Modbus T CP are busy the new client Enable the connections filter for configuration Enable the IP connections filter over Modbus TCP r
31. t connection as per ISP recommendations using the router documentation The router settings should also provide for the redirection of requests which are coming to static IP address provided by the ISP to the unit IP address factory setting 192 168 0 111 verify if the Internet connection is protected by standard means see below ewhen referring the unit via Internet use IP address provided by your ISP Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 31 AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 4 Protection of connection eLAP 485PC has basic protection against unauthorized access over Ethernet eIP address filter for configuration can be enabled to restrict access to HTTP and Modbus interfaces of the unit to a single specified address without restricting access to the Modbus LAP 485 IP address filter for Modbus TCP can be enabled to restrict access via Modbus TCP to the Modbus network LAP 485 and unit to a single specified address unit settings be changed remotely by entering the password minimum 5 characters Entering several incorrect passwords while trying to determine the correct one is blocked by the unit ewhen entering the password all settings shall be only available to a given client using a given protocol In case of no requests from the client over the long period
32. tenance procedure for LAP 485PC 5 Connecting the LAP 485PC 6 Operating the LAP 485PC 6 1 General information 6 2 Operating LAP 485PC over the HTTP protocol 6 3 Operating LAP 485PC over the Modbus TCP protocol 7 Settings 7 1 General information 7 2 Parameters of LAP 485PC 7 3 Configuring LAP 485PC through WEB interface 7 4 Configuring LAP 485PC through Modbus interface 8 Complete set 9 Transportation and storage Appendix A Switching to Ethernet Appendix B Character codes under ASCII standard Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL Terms and abbreviations e 10Base T Ethernet standard for twisted pair communication with the speed of 10Mbit s e 100Base T Ethernet standard for twisted pair communication with the speed of 100Mbit s e 8P8C RJ45 is an unified socket for 10Base T 100Base T network connections Twisted pair is a pair of insulated conductors inside the cable which are twisted together in order to reduce the distortion of the transmitted signal Indicator is a LED element e Client is a device which is addressing the other devices server with a request to perform certain functions e Package is a block of data be transmitted between devices e Unit is the LAP 485PC Protocol converter e
33. the unit Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 10 LATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 3 1 2 Display and control The front panel of LAP 485PC is provided in Figure 3 1 Reset button is designed to restart the unit or factory reset 2 Power indicator Power is activated if supply voltage is available 3 Error indicator Error warns about errors to include format errors of incoming data packages 4 Indicator LAP 485 is activated while waiting a reply from the unit in the Modbus network is flashing while data exchange over the Modbus network 5 Indicator Ethernet is activated when connected to the Ethernet network is flashing while data exchange over the Ethernet network 4025 gt Figure 3 Front panel of LAP 485PC 3 2 Functioning Simplified structural diagram of the unit is provided in Figure 4 32 digit RISC processor with ARM architecture provides data routing between the Modbus RTU ASCII LAP 485 network and Ethernet 10base T 100base T network The operating speed and availability of channels for direct access to the memory allows to process the high speed data flow Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 11 T ATIN
34. three bytes of the IP address which are different from those specified in Table A 1 or the LAP 485PC factory IP address is already taken the configurable unit should be temporarily removed from the network to avoid addressing conflicts and establish a communication between this unit and LAP 485PC directly This will allow to configure the unit and LAP 485PC for direct communication or switching LAP 485PC to the network Latin American Power CABA Argentina Tel 54 11 3532 4186 Cel 54 9 11 5584 1891 info latinamericanpower com www latinamericanpower com 26 ATIN AMERICAN POWER LAP PROTOCOL CONVERTER LAP 485PC USER MANUAL 2 Configuring the client unit The unit addressing is set according to documents and software it uses Below is an example of configuring the personal computer PC on Windows XP or Windows 7 to communicate directly with the LAP 485PC on factory settings Open the list of OS network connections to configure the network address in Windows To do this follow the steps below mind the OS version For Windows XP 1 Log in as administrator 2 Select Start Control Panel 3 If control panel items are divided into categories select Network and Internet Connections 4 Go to Network Connections For Windows 7 1 Log in as administrator 2 Select Start Control Panel 3 If control panel items are divided into categories select Network and Internet 4 Go to Control
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