We have a nodebus system with an AB30 gateway connected to 3 PLC's over
phone lines via modems.  The three modems are connected to the gateway on an
RS485 chain to the gateway.  However, when one modem link fails ( bad phone
line? ) the gateway communication eventually fails to all 3 modems.  The
only successful recovery has been to reboot the AB30.  Has anyone else
experienced a similar problem?  We are experimenting with periods, phasing,
watchdog timer, retries, etc. to segregate the traffic.  Suggestions?
Solutions?

Stephen T. Woodworth
FeedForward, Inc.
1341 Canton Road, Suite H1
Marietta, GA 30066
mailto:[EMAIL PROTECTED]


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