Chapter 14. The RS422/485 communication of GM6-CPUB
14-5
14.5 Monitoring
Users can monitor the communication status of RS422/485 network with the monitor function of the
GMWIN software. The high speed link parameter 1 monitoring screen is used for monitoring the
RS422/485 network status.
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The CPU module should be a B-type, and assigned as master station in the basic
parameter setting. Otherwise, the monitor screen will show the status of high speed link
service.
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In the monitoring screen, the following flags are shown;
Master PLC parameter
_M422_STATE (On / Off)
The scan time of communication
_M422_SCAN_MAX (Maximum scan time)
_M422_SCAN_MIN (Minimum scan time)
_M422_SCAN_CUR (Current scan time)
No., Type, From, To, Size
The contents of high speed link 1 parameters
Error counter and code
_M422_ERR_CNT, _M422_ERR
Slave PLC
_S422_STATE