GraemeTownsend
Member
Howdy.
Have compact Logix with a SM-2 module installed, talking MODBUS out all three channels to various aftermarket devices. Been in and working rock solid for several months.
Recent torrential rains have caused issues, underground comms cables failed, in turn failing aftermarket MODBUS devices. Over a few days of testing and replacing both cable and devices, all appeared to be working again, then without warning all MODBUS comms stopped.
Error:
16#0002: Resource unavailable.
I cannot seem to get it to work, I have (accidentally) put PLC into Program mode then back to Run mode, no help. I am waiting for after hours to be able to cycle power to entire system.
In the meantime, would anybody have any tips on what to look for/do?
Thanks.
Have compact Logix with a SM-2 module installed, talking MODBUS out all three channels to various aftermarket devices. Been in and working rock solid for several months.
Recent torrential rains have caused issues, underground comms cables failed, in turn failing aftermarket MODBUS devices. Over a few days of testing and replacing both cable and devices, all appeared to be working again, then without warning all MODBUS comms stopped.
Error:
16#0002: Resource unavailable.
I cannot seem to get it to work, I have (accidentally) put PLC into Program mode then back to Run mode, no help. I am waiting for after hours to be able to cycle power to entire system.
In the meantime, would anybody have any tips on what to look for/do?
Thanks.