4-68
4-2 Function Mode
4
Functions
Network Error
This function detects and outputs a network error during RS485 ModBus communication.
•The error is output during RS485 ModBus communication if the next signal does not come even
after the specified time period in C077.
Data Symbol Function name Status Description
08 NDc Network error
ON The communication watchdog timer times out.
OFF Normal
Available input terminals P1-PC, MA-MC (or MB-MC)
Required settings C021, C026, C052, C077
Master
Slave
Watchdog timer
[C077]
NDc
Alarm
[C076] = 00 or 01
Time out
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