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M340 Remote IO capability


Title
M340 and Remote IO  BMxCRA312xx Adapters
 
Issue
M340 Remote IO  capability
 
Product Line
M340 BMXPRA0100
 
Environment
Unity Pro
 
Cause
N/A
 
Resolution
 The M340 does not have Remote IO (BMxCRA312xx) capability. A M340 PLC can not be setup to control BMxCRA312xx adapters. 
Only a M580 PAC has the capability to control the BMxCRA312xx Remote IO Adapters. 
When using just M340 PLCs in a remote communication setup, each M340 PLC requires a CPU with a Unity Program at each location.
ModbusTCP is typically used for communicate between the different M340 PLCs. 
The M340 family does offer a Ethernet only CPU, BMXPRA0100, for the use in remote station communications.
The BMXPRA0100 M340 CPU would be programmed with Unity , just like any other M340 PLC, to ru the remote staion's IO module.
The Unity Program for the BMXPRA0100 M340 CPU would need logic to move the local IO module Data to and from %MW memory locations for control by a central M340 PLC that would be reading and wring the remote M340 station.

 
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