Posted 26 Mar 2016 I'm having Allen Bradley PLC communication issue to a shared remote Rack. The Remote rack en2t card seems to reset. The Network path to it PLC to EN2t to N-tron switch to (Dell Managed Switch) to fiber converter to fiber to fiber converter to n-tron to remote en2t card I've found that when I replace the Dell Managed switch with a generic link sys switch. My I/0 OK Status light on the PLC will only blink 2 times a day compared to the Dell N3048 switch which will cause the status light to blink >500 times a day. I have fault code that runs in the PLC to determine what's causing the I/O fault and it Always points to the same remote rack. I've swapped fiber converters patch cables n trons en2t cards nothing effect it except the managed switch replacement...I haven't replaced the physical remote rack yet, cause I'm having trouble justifying it, since I get such a dramatic change when swapping the switch. Anybody have any thought or ideas please provide... Share this post Link to post Share on other sites
Posted 20 May 2018 I know this is late, but I had the very same issue and my resolution was to use a AB Stratix 5400 AND you must use a AB 100MB Transceiver and everything worked just fine. I have also used the 1756-EN2F module and it also worked very well. Share this post Link to post Share on other sites
