Here's a weird one...
There's a Micrologix 1200 in the plant that uses NET-ENI to conect with the rest of the plant network. Lately, I notices occasional PLC timeout messages popping up on an HMI that reads a single word from it.
Today, I decided to replace the ENI with an IAP, which I have found to be infinitely more reliable, assuming it would eliminate the timeouts - it did, but I can't go online with the PLC.
Thinking it might be a minor configuration change, I copied the configuration from another IAP already used on a ML1200, loaded it onto the new one and changed the IP address to match the ENI. It didn't help.
Next, I tried replacing the IAP with the original ENI. The PLC timeout on the HMI returned, and I still can't get online through the ENI.
Lastly, I swapped the ENI with the IAP connected to the other ML1200. Still can't get online with the PLC.
I can get online through DF1 driver and serial cable.
Suggestions?
I havent changed network switch yet...
There's a Micrologix 1200 in the plant that uses NET-ENI to conect with the rest of the plant network. Lately, I notices occasional PLC timeout messages popping up on an HMI that reads a single word from it.
Today, I decided to replace the ENI with an IAP, which I have found to be infinitely more reliable, assuming it would eliminate the timeouts - it did, but I can't go online with the PLC.
Thinking it might be a minor configuration change, I copied the configuration from another IAP already used on a ML1200, loaded it onto the new one and changed the IP address to match the ENI. It didn't help.
Next, I tried replacing the IAP with the original ENI. The PLC timeout on the HMI returned, and I still can't get online through the ENI.
Lastly, I swapped the ENI with the IAP connected to the other ML1200. Still can't get online with the PLC.
I can get online through DF1 driver and serial cable.
Suggestions?
I havent changed network switch yet...