ET200SP CM PtP (6ES7 137-6AA00-0BA0) - Modbus RTU

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I try get data from remote Modbus RTU device. But no success.
I use module (6ES7 137-6AA00-0BA0) in ET200SP station, which connected to CPU 315-2 PN/DP (6ES7 315-2EH14-0AB0) V3.2. (configuration in attached video)
as slave I use MOD_RSSIM - www.plcsimulator.org/
6ES7 137-6AA00-0BA0 connected to MOD_RSSIM through Moxa uPort 1150I
For connecting I use pins 12 (T(A)/R(A)), 14 (T(B)/R(B)) and 16 (PE Ground) of module 6ES7 137-6AA00-0BA0.
After REQ for reading - BUSY output switched to TRUE (as long as REQ is TRUE), DONE and ERROR outputs without changing.
Configuration is Ok? What is wrong? What should I check?

Опубликовано:

4 апр 2016

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Комментарии : 12

@321Endeavor123 2 года назад

Неполное видео. В функции modbus_comm_load в качестве порта укажите значение, указанное в system constants cm ptp модуля. Также в экземплярном блоке данных инструкции modbus_comm_load в статических переменных найдите параметр mode и введите там значение "4" - полудуплексное соединение для rs-485, потому как по умолчанию там стоит 0, а 0 - для rs232.

@zenerz1 8 лет назад

You have to call Modbus_comm_load for one time only before using Modbus_Master/Modbus_slave. But before that, Did you set MODE static parameter of Modbus_Comm_load to 16#04?

@jankonecnik1523 7 лет назад

You have to use Hardware Identifier for port setting, not actual IO address.

@vikasswarnkar992 7 лет назад

I AM FACEING SAME STATUS IN MODBUS MASTER STATUS 16#7002 , HOW TO OVERCOME THIS PROBLEM

@HuyBom9010 Год назад

I have a problem I need help with I am connecting modbus RTU with ET200SP connected to S7 1500 I use 3 ET200SP stations, each station has 1 Modbus RTU module PtP 6ES7 137-6AA01-0BA0 to connect up to 10 Flowmeters I declare 3 MBCommLoad functions to declare the connection port for each Modbus module, but in the program, it does not run. And if I only use 1 MBCommLoad function for 1 Modbus module, the connection is OK. I hope you can help me with the solution so that I can use all 3 modbus RTU modules. Thank you so much

@automatizaciongastelum2274 8 лет назад

Not much o consolation. Having the same problem communicating to a MAG 6000 using Modbus RTU protocol. Already managed communication using an S7-1200 with a CM 1241 RS-485. But with the S7-1500 and the ET200SP PN ST, nothing. Hoping someone with better luck solves this problem.

@automatizaciongastelum2274 7 лет назад

Done.

@nixxy2811 7 лет назад

how did you manage to comunicate ? what was wrong ?

@automatizaciongastelum2274 7 лет назад

nixxy2811 had to change static parameter MODE to 4 inside MB_Comm_Load_DB

@automatizaciongastelum2274 7 лет назад

4 means rs-485, bit it is default to 0, rs-232

@92TheButcher 6 лет назад

Hello! Do you know sth more about this problem (16#7002), because I communicate with a shneider's inverters and temporary 16#7002 occurs. I set 4 in MODE parameter...