After a short while of tries, the Modbus communication, became unresponsive again, tried the restart, shutdown but now nothing is working.

Nicolai, Additional information became available: It turns that my piTest tries are working now, after the same restart that I made (for my topic regarding Analog Outputs unresponsive). So The same reason that caused the AO's unresponsive caused my Modbus tests not work either. That concerns me.. So...

Nicolai, as it turns out, this morning I tried again, before running the command that you requested me to run, and the Analog Outputs were responding fine. Only difference is last night I shutdown the whole setup after being on for a few days and restarted today. I need to find out why this is happe...

Nicolai,

To clarify, Nodered is active (on the Pictory Config) because I plan to develop a program on Nodered later on. But I did not code anything yet...

Hi Nicolai, No processes (made by me) are running, I am only using piTest to force the changes..

I have my Revpi Connect + write values to the Analog outputs of my AIO, but I don't measure any voltage or current. My Analog Inputs are working fine though but in 4-20 mA & 0-10 VDC. My configuration is as follows: 2021-10-15 (1).png 2021-10-15 (2).png I am forcing writes using piTest - w Out1_...

Hi Nicolai, thanks for your reply. My answers to your questions follow: Did you reset the piControl driver (via pictory or piTest -x) on both devices? YES I DID. What are the values of the following registers on the master: Modbus_Master_Status, Modbus_Action_Status1-4? Modbus_Master_Status: 255 Mod...

This is not a reply, but an addition to my problem.. I mean to upload the following two images to my original post:

My Project involves slaving a Connect via a Connect+ master over Modbus RTU over the RS485 link on both. I have not been able to establish successful communications between the two Revpi's. I have a few questions that I think you can answer for me to make sure I am have followed the right steps: 1.-...

Nicolai,
Thanks so much for your input.. I will give it a try! And will be back to you on the results.