I have an existing system with one main PLC, a 1769-L35E, and numerous MicroLogix 1100 satellites. The system already sends messages, so I know it works. The satellite PLCs communicate in an indirect way using the multi-hop feature that I don't understand, while the main sends messages directly but only to a few of the satellites. I need to create a new message from the main to one of the satellites, so I copied the MSG command the main PLC uses for talking to another satellite and changed the IP address to my target. And of course it doesn't work because I ain't that lucky. I'm sending a single int, so it can't be memory. The error code I am getting is 16#0001 and the extended error is 16#0008_0301. I read somebody else's post on a similar error but they had a bunch of faulted VFD connections I don't have. This system is fully functional except for my little upgrade. Any suggestions from the smart gallery?