clebae infinique Posted May 11, 2020 Report Posted May 11, 2020 I am currently using 2 Mitsubishi fx3u 80m plc with a rs422 cable adaptor. The issue I am having is that I can connect to one plc but the other is giving me a error with the connection. It is only on one PLC. This the first time I am try to connect to the PLC. What is the best solution to this problem.
clebae infinique Posted May 11, 2020 Author Report Posted May 11, 2020 A little more history of what is going on, I am trying to adjust some of the codes in the PLC but can't connect. The PLC is working but just can't connect to PC.
MitsProgrammer Posted May 15, 2020 Report Posted May 15, 2020 Good day There could be a couple of problems for not being able to communicate to your PC. 1. Are you using a Mitsubishi RS422 adaptor? FX-USB-AW connected to the onboard RS422 serial port on the PLC? 2. If you are trying to connect through a serial adaptor or module the module needs to be setup to allow programming communication. Please see link below for the manual for serial communication. Hope this helps. https://www.dropbox.com/sh/dmlmfxhsslmtqwx/AACu4qvID8R83r8Q1hJne0XQa?dl=0
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