Mitsubishi Q12PRHCPU - Device Data Used by the New Control System

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5.5 Tracking Function
5.5.8 Device Data Used By The New Control System
5
REDUNDANT SYSTEM FUNCTIONS
5.5.8 Device Data Used By The New Control System
When the tracking from the control system CPU module is complete, the standby system
CPU stores the received tracking data into the specified devices sequentially.
When system switching occurs, the new control system CPU begins operation based on
the received tracking data, which varies depending on the reception condition at the time
of system switching.
Table5.53 shows device data used by the new control system CPU module depending on
the tracking data reception condition.
* 1: If received tracking data is not stored in the specified device, the CPU module will begin operation
after storing tracking data in the specified device.
[Tracking in Program Synchronized Mode]
Table5.53 Device Data Used by New Control System CPU Module
System Switching Timing Tracking Data Not Received
Tracking Data Received
Receiving Tracking Data
Reception of Tracking Data
Completed
*1
Device in which Initial Value is
not set
CPU Module Device Data CPU Module Device Data Received Tracking Data
Device in which Initial Device
Value is set
Preset Initial Device Data CPU Module Device Data Received Tracking Data
Diagram 5.58 Tracking Operation Timing in Program Synchronized Mode
END END
0
Waiting
Tracking processing Tracking processing
Tracking processing
Initial execution type program
Prepare tracking data Prepare tracking data Prepare tracking data
Adjust tracking data Adjust tracking data
Initial processing
Initial processing
Tracking data not received
Scan execution
type program
Scan execution
type program
Scan execution
type program
0
Waiting Waiting
Control
system
CPU
module
Standby
system
CPU
module
Tracking data
received
Receiving Tracking Data
Send
Receive
Send
Receive
Send
Receive