The company gave me a firmware that they use to verify the communication between PC and PLC and it works so I know i'm able to communicate with the Unitronic PLC.īut, and here is my actual problem, It seems I am unable to read or write information to the Unitronic PLC using the Modbus TCP AOI in Studio5000.
Now I'm pretty much finished with my intro, let's get into the problem. Now I'm not a Modbus expert but from what I understand, considering these informations are Words (or integer, not actually completely sure), theses adresses probably actually represent 41000 to 4104 to 41108 because they should be holding registers. They gave us an info sheet that said that those informations are contained in the addresses 1000 to 10 to 1108. The company that sold us the machine told us that we should be able to communicate with them through Modbus TCP/IP to read and write different informations (current or voltage values, recipes numbers, things like that). Hello, I'm gonna try to make this as clear as possible.įor a project, we have 3 Unitronics PLC's controlling each a machine.
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