Mitsubishi Electric MELSEC-Q Series User Manual page 144

(b) Setting the standby master station
Configure the settings in "Type" and "Mode" of the network parameter as follows. For other settings, refer to
Page 115, Section 7.4.2.
1.
Set the station number from 1 to 64 using the station number setting switches on the master/local
module.
Set the same number as that of "Standby Master Station No." that was set for the master station.
2.
Open the "Network Parameter" window to configure the setting in "Type" as follows.
Project window
Function
Master station switching
function
Master station duplex
function
Data link start function using
a standby master station
3.
Set the same mode as that of the master station in "Mode".
4.
When "Master Station (Duplex Function)" has been selected in "Type", set the same settings as
those of the master station in items other than "Type" and "Mode".
When "Standby Master Station" is selected in "Type"
Ex.
142
[Parameter]
When the master station
goes down, the standby
master station operates
as a master station to
continue data link.
[Network Parameter]
Operation
When a failed master
station becomes normal
again, it returns as a
standby master station.
×
[CC-Link]
: Enabled, ×: Disabled
When only a standby
master station is started
up, it starts data link as a
master station.
×
×
Setting in "Type"
Standby Master
Station
Standby Master
Station
Master Station
(Duplex Function)