Powering Off A Station In Operation Without Error Detection (Error Invalid Station Setting Function) - Mitsubishi MELSEC-Q Series User Manual

4 FUNCTIONS
4.4.7 Powering off a station in operation without error detection (Error invalid station setting
function)
Master
station
Station number 1
(occupies 2 stations)
The station does not become data link faulty.
Master
station
Station number 1
(occupies 2 stations)
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This function prevents remote stations, local stations, intelligent device stations, and a
standby master station that are powered off in the system configuration from being
treated as "data link faulty stations" by the master station and local stations, using the
network parameter settings.
Note that if a station is set as an error invalid station, problems occurring in that station
can no longer be detected. In addition, the error invalid station settings cannot be
changed while online because they are set with the network parameters.
Station number 3
Remote station
(occupies 1 station)
Station number 3
Remote station
(occupies 1 station)
POINT
(1) If a remote station, a local station, an intelligent device station or the standby
master station that is set as an error invalid station is "specified as a reserved
station," the reserved station function overrides the error invalid station setting
function.
(2) If errors are generated at all the stations when they are set as error-invalid
stations, the "ERR." LED will light.
[Setting method]
Set the error invalid station setting function in "Station information settings"
of the network parameters using the GX Developer. For more details on the
setting, see Section 6.3.
Stations set as error invalid stations
Station number 4
Local station
(occupies
1 station)
Remote station
Station number 4
Local station
(occupies
1 station)
Remote station
MELSEC-Q
Station number 7
Local station
(occupies
4 stations)
Station number 5
Remote station
(occupies 2 stations)
Station number 7
Local station
(occupies
4 stations)
Station number 5
Remote station
(occupies 2 stations)
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