AB PLC to AC800M communication over Ethernet
I need to communicate Allen Bradley PLC Compact Logix 1769-L33ER with 800xA 5.1 RevD FP4 via Ethernet IP which is connected to Plant Network and there is no way to do third party OPC communication also .Kindly anyone suggest me a protocol for this communication.
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For Ethernet/IP Communication, you have to obtain a CI873 card for 800xA CPU side. CI873 behaves as a Master, so AB CompactLogix CPU configures as Slave.
By the way, if 800xA side has also a CI867 (Modbus/TCP Card). You can use Modbus TCP/IP communication protocol.
AFAIK, the new CompactLogix 5370 models come with an updated Ethernet port which supports open sockets.
And on the Rockwell’s sample code website you’ll find a sample application which uses the open sockets feature to give these new CompactLogix models the ability to be either a master or slave on a Modbus TCP network.
If you're using an older version of CompactLogix, so you have to buy MVI69-xx Modbus TCP/IP card.
Hope it helps you.