Standby Master Function - Mitsubishi LJ61BT11 User Manual

8 FUNCTIONS

8.2.7 Standby master function

This function enables the data link to continue working by switching the control to the
standby master station (meaning a backup station for the master station) if a system
down occurs in the master station due to a malfunction in the programmable controller
CPU or power supply.
The master station can return to normal and to system operation as the standby
master station, even during data-link control by the standby master station, thus
preparing itself for a standby master station system down (master station duplex
function).
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