his answer ID describes how to create the correct path for a MSG instruction from a ControlLogix processor to another ControlLogix processor using Ethernet with two Ethernet cards (example 1756-ENBT) The controller that initiates the message instruction has the following path (separated by commas, no spaces):
1,S1,2,xxx.yyy.zzz.www,1,S2
Where:
- 1 is the backplane for the first chassis (the clx backplane always uses 1)
- S1 is the slot of the 1756-ENBT in the first chassis (the first position on the left is 0, second 1,...)
- 2 is to go outside to the Ethernet (always 2)
- xxx.yyy.zzz.www is the IP address of the 1756-ENBT in the second chassis
- 1 is the backplane for the second chassis (always 1 for clx)
- S2 is the slot of the CLX in the second chassis (starting from left the first position is 0, second 1,...)
Example 1,3,2,192.168.1.4,1,0