Thank you, you made my day. If I want to know more, I will message you.So you upgraded your 85XX to a 85XX+ and things stopped working. I'm assuming that the old 85XX is off of the network while you are trying to communicate with the 85XX+.
Has the new 85XX+ been configured to the same settings as the old 85XX?
Does the new 85XX+ use the same network IDs as the old 85XX> I noticed that the network ID in the first statement was #1 and the Slave ID in the second Modbus statement was #1 as well. Seems strange.
Is your new 85XX+ set up for Modbus RTU? The Unitronics PLC appears to require it.
Is the memory map of the new 85XX+ compatible with the old 85XX? There will most likely be differences from minor additions to entire changes to the map. The Modbus map starts on page #65 of the 85XX+ manual
When this happens (as it always does), it's helpful to use a Modbus test program such as "Simply Modbus" https://www.simplymodbus.ca/RTUmaster.htm
Please keep us posted.
John
Great to hear!, and I would love to know more.Thank you, you made my day. If I want to know more, I will message you.
SureGreat to hear!, and I would love to know more.
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