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Post by WECON Technical support on Mar 23, 2016 14:58:21 GMT
How to comunication with PLC by Modbus RTU.There are some setting about modbust word and bit setting(read+write).Please check the demo link below.You can understand the basic demo first.
PLC MODBUS-P+D
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Post by cmarquez on Nov 27, 2018 1:45:45 GMT
Hello, im trying to connect a LX3VP1616 to PC over Ethernet, with a Visual basic aplication.
Using 485 RTU Modbus, using VisualBasic is no problem, but over ethernet i can´t do it.
Maybe in the PLC aplication is a different parameter that i have forgett, or is different over ethernet.
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Post by WECON Support on Nov 27, 2018 2:56:52 GMT
you may check the ethernet bd board manual at first, if you can not find any problem, send the plc program to me, i will check.
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Post by cmarquez on Nov 27, 2018 11:20:19 GMT
Thanks for your quickly response. We check the BD board and don´t find any problem, its work to send data to another PLC, and we ping the IP of the PLC and we have response.
Where send you the PLC program test?
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Post by cmarquez on Nov 27, 2018 17:45:21 GMT
you may check the ethernet bd board manual at first, if you can not find any problem, send the plc program to me, i will check. Dear, this is the PLC program, is a test for simulate the comunication between PLC and computer using Visual Basic function. But nothing happend. ethernet 136.wcp (49.18 KB) plc ip 192.168.0.136 I try, this another software for testing Modbus TCPIP, but dont work too. mbslave.exe (615.5 KB) Thanks for all Claudio Marquez |
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Post by WECON Support on Nov 28, 2018 3:17:42 GMT
i check the plc program, basically it is correct. but we need to put the " m8002 CPAVL D300 M300 K1000 " instruction at the end of program. to be more specific, we shoud configure the parameter (ip, gate way ...) at first, then we write m8002 CPAVL ...
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Post by cmarquez on Nov 30, 2018 18:50:15 GMT
We put the instruction a the end of the program, and dont have any difference.
The PLC dont have comunication. Another way?
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Post by cmarquez on Dec 5, 2018 2:04:43 GMT
i check the plc program, basically it is correct. but we need to put the " m8002 CPAVL D300 M300 K1000 " instruction at the end of program. to be more specific, we shoud configure the parameter (ip, gate way ...) at first, then we write m8002 CPAVL ... Hello, have any idea what going on with the comunication over tcpip modbus. This version dont work, too. ethernet 136 1.wcp (49.47 KB) Help!!! |
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Post by WECON Support on Oct 10, 2019 3:08:08 GMT
i check the plc program, basically it is correct. but we need to put the " m8002 CPAVL D300 M300 K1000 " instruction at the end of program. to be more specific, we shoud configure the parameter (ip, gate way ...) at first, then we write m8002 CPAVL ... Hello, have any idea what going on with the comunication over tcpip modbus. This version dont work, too. Help!!! hello, if possible, please tell us your email, we will send demo to you |
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