Synertech (Customer) asked a question.
Illegal Data Address
Hi I am working with the Stride Thermocouple IO module. I have my Lenze PLC set up to read the analog values from the 8 channels.
The probelm I am running into is that when i send a message i recieved back illegal data address from the stride unit. To my knowledge I am using correct addresses 40041-40048 and i am using code 3 for reading the holding registers.
Has anyone ran into this? Is there an addtional setting on the units for them to accept messages?
Thanks,
Bryant
I'm assuming you're trying to read Modbus data. Try offsetting the addresses you're reading by one in each direction and see if that clears the error. Try reading from both 40042-40049 and 40040-40047.
+1 @RBPLC (Customer)
I have not used the Lenze PLC, but it may be looking for a 6 digit Modbus address. You could also try using 400041 - 400048.
https://control.com/forums/threads/5-digit-addressing-and-6-digit-addressing.8890/
Just a thought,
Regards,
Garry