Modbus response for first N7 register places CSP header data (Value 0x42) into the response 2nd byte.
Scanning PLC-5 register N7:2.
Modbus scan register is 2.
N7:2 value is x50 (decimal 80).
N7:4 value is x20 (decimal 32).
Response to Modbus poll: 01.03.00.02.00.01.25.CA.
is: 01.03.02.50.42.04.75.
Response to poll:01.03.00.02.00.02.65.CB.
is: 01.03.04.50.42.20.00.52.E7.
ia target is plc5.
Should this be fixed in the ia table for the abethernet protocol or in the serial section?
I don’t really understand the question?
Make sure you use the latest firmware, which is the G2. Digi doesn’t own a PLC5, so support for that command-set has always been (per the Readme file) limited to how a ControlLogix likes the PLC5 requests formed. However, for firmware G2 a large customer worked to confirm the PLC5 support. I forget the details, but there was some off-by-one issue fixed related to how the PLC5 response (which was a different form than how the CLgx replied) was parsed.