Messaging from Compactlogix to Barnett Autodialer

[Stache]

Calling all the AB gurus.

I am doing my first large AB project. I am using RSLogix 5000, but only have ladder logic. I am getting the hang of most of it until this part.

I have a Barnett Engineering LINK Autodialer. It is going to connect to the CompactLogix 32E. The Barnett has a serial and ethernet port. Unfortunately the Barnett does not support Ethernet I/P only modbus TCP. Therefore I'm stuck with the serial port. I can live with this. According to the documentation the Barnett is the master and controls the polling.

Protocols used by the module are:

Modbus slave

Modbus master

Modbus TCP/IP slave

Modbus TCP/IP master

Allen-Bradley DF1 Point-to-Point PLC5 master

Allen-Bradley DF1 Point-to-Point SLC-500 master.

I'm assuming I use a message intruction set up as read, and either the SLC or PLC5 mode. I tried this following the documentation for source address N:10:0 as the first address in the barnett and my destinaion address is Autodialer_INT in the PLC. This is set-up as an interger. I have read the documentation to adjust the value back to a DINT, but first to get the info.

I keep getting an F006 error code on the message instruction.

Any ideas?

Also can you change the message instructions parameters while online?

 

[Ken Roach]

From what I've read on the Barnett unit, it is the "master", meaning it initiates all the read and write transactions with the controller.

You shouldn't have to use a MSG instruction at all.

All you have to do is create an array tag in the CompactLogix called Autodialer_INT[x], and configure the array tag to represent PLC/SLC data file 10 by using the Logic -> Map PLC/SLC Addresses menu function in RSLogix 5000.

 

[Stache]

Thanks Ken I would have searched for that for a week!!!

Next time I'm behind the equipment I'll give it a try and let you know.