I've got an M340 hitting an Ethernet to Serial converter one read at a time. Each read is enabled through a one-shot r_trig. I've got some extra time in between reads.
The CPU sometimes runs for awhile but eventually each read gets hung up with an error communication report 7. After that nothing gets the comms back except cycling power. I've tried the cancel bit, the cancel instruction, halting and back to run, shutting off the active bits before the read starts, etc.
Other posts on this forum seem to have found the same problem but I didn't see anything conclusive about a work-around. The CPU is in use in Alaska and they don't have a spare so updating the firmware concerns me. If I can tie it to a definite revision bug we can ship them a different CPU.
EcoStruxure V15
Thanks to all.
The CPU sometimes runs for awhile but eventually each read gets hung up with an error communication report 7. After that nothing gets the comms back except cycling power. I've tried the cancel bit, the cancel instruction, halting and back to run, shutting off the active bits before the read starts, etc.
Other posts on this forum seem to have found the same problem but I didn't see anything conclusive about a work-around. The CPU is in use in Alaska and they don't have a spare so updating the firmware concerns me. If I can tie it to a definite revision bug we can ship them a different CPU.
EcoStruxure V15
Thanks to all.