Scholex Posted October 26, 2017 Report Share Posted October 26, 2017 Buen día, he estado tratando de establecer comunicación utilizando el protocolo MODBUS RTU entre un plc JAZZ JZ20-J-R10 con modulo MJ20-RS y los OPC KEEPSERVER Y NATIONAL INSTRUMENTS sin poder co nseguirlo . Adjunto el código ladder que estoy utilizando, solicito su ayuda para conocer si estoy cometiendo algún error en la programación y configuración del puerto. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted October 27, 2017 MVP 2023 Report Share Posted October 27, 2017 4 hours ago, Scholex said: Buen día, he estado tratando de establecer comunicación utilizando el protocolo MODBUS RTU entre un plc JAZZ JZ20-J-R10 con modulo MJ20-RS y los OPC KEEPSERVER Y NATIONAL INSTRUMENTS sin poder co nseguirlo . Adjunto el código ladder que estoy utilizando, solicito su ayuda para conocer si estoy cometiendo algún error en la programación y configuración del puerto. Translated- Good day, I have been trying to establish communication using the MODBUS RTU protocol between a JAZZ JZ20-J-R10 plc with MJ20-RS module and the KEEPSERVER and NATIONAL INSTRUMENTS OPC without being able to follow it. Attached the ladder code that I am using, I request your help to know if I am making any errors in the programming and configuration of the port. First off, change to no flow control - SI 144 = 0 in net 1. Don't forget to change the port parameters on the PC as well. SI 64 is not used in a Jazz. You can delete that net. Other than that, your code looks OK. If changing the flow control doesn't fix it start looking at the cable. Joe T. Quote Link to comment Share on other sites More sharing options...
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