alexmorrish
Member
Hello All,
I am currently commissioning a unit that has communication to some existing PLCs. I was having an issue with a safety produce/consume tag's status and have traced it to a comms issue.
My new system is a 1756-L81ES GuardLogix 5580 Safety Controller.
Connecting to the old PLC through the onboard ethernet port.
The old system is a 1756-L72S GuardLogix 5570 Safety Controller.
Connecting to my new PLC through a 1756-ENBT.
This connection does go through a large network, unavoidable.
The comms issue comes about every 15-30min and because it has to do with safety E-Stops it stops my entire system. The comms loss persists for about 5-15sec before reestablishing the connection.
Looking from my new system, I can see that the old PLC's ENBT card's GSV continues with 16#4000 Running.
The GSV of the Safety PLC of the old system changes to 16#5000 Shutting Down ( The Module object is in the process of shutting down all connections to the module).
I have not seen this issue before and am unsure how to solve proceed.
Thank you in advance for any help!
Alex
I am currently commissioning a unit that has communication to some existing PLCs. I was having an issue with a safety produce/consume tag's status and have traced it to a comms issue.
My new system is a 1756-L81ES GuardLogix 5580 Safety Controller.
Connecting to the old PLC through the onboard ethernet port.
The old system is a 1756-L72S GuardLogix 5570 Safety Controller.
Connecting to my new PLC through a 1756-ENBT.
This connection does go through a large network, unavoidable.
The comms issue comes about every 15-30min and because it has to do with safety E-Stops it stops my entire system. The comms loss persists for about 5-15sec before reestablishing the connection.
Looking from my new system, I can see that the old PLC's ENBT card's GSV continues with 16#4000 Running.
The GSV of the Safety PLC of the old system changes to 16#5000 Shutting Down ( The Module object is in the process of shutting down all connections to the module).
I have not seen this issue before and am unsure how to solve proceed.
Thank you in advance for any help!
Alex
