System Switching Operation - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

System switching operation

In a redundant system, if the control system fails, the control system and the standby system are switched.
In CC-Link IE Field Network, send data is transferred to the new control system after system switching to continue data link.
This section describes system switching operations for each system.
While the control is switched to a station or network of the new control system, the cyclic data output is held.
For cyclic data holding time (output holding time) when system switching occurs, refer to the following.
Page 352 Cyclic data holding time when system switching occurs
Redundant master station
When an error occurs in the control system, system switching occurs in the redundant system.
The master station (1) stops master operation and the submaster station (2) switched to the new control system takes over
master operation to continue the control.
(1)
1 FUNCTIONS
82
1.7 Redundant System Function
(2)