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26 REDUNDANT FUNCTION
26.3 Tracking Transfer
■Special register
The following table lists the special register areas that are automatically transferred by the system.
For details on the special register, refer to the following.
Page 668 List of Special Register Areas
■PID control instruction information
The PID control data that is specified with the PIDINIT or S.PIDINIT instruction is transferred. ( MELSEC iQ-R
Programming Manual (CPU Module Instructions, Standard Functions/Function Blocks))
■SFC information
To keep executing the SFC program in the new control system, tracking transfer of the required data is executed.
■System data
The data related to the redundant system, such as system switching and operation mode change, is transferred.
SD number Name
SD49 Error detection invalidation setting
SD250 Loaded maximum I/O
SD315 Service processing constant wait status setting
SD414 2n second clock setting
SD415 2n ms clock setting
SD771 Specification of the number of write instruction executions to data memory
SD775 Selection of refresh processing during the COM instruction execution
SD792, SD793 PID limit setting (for complete derivative)
SD794, SD795 PID limit setting (for incomplete derivative)
SD816, SD817 Basic period
SD818 Bumpless function availability setting for the S.PIDP instruction
SD819 Process value output type setting for the S.PHPL2 instruction
SD944 Backup function setting
SD947 Day and time setting for automatic backup (day)
SD948 Day and time setting for automatic backup (hour)
SD949 Day and time setting for automatic backup (minute)
SD950 Time and day of the week setting for automatic backup (hour)
SD951 Time and day of the week setting for automatic backup (minute)
SD952 Time and day of the week setting for automatic backup (day of the week)
SD954 Restoration target data setting
SD955 Restoration function setting
SD956, SD957 Restoration target date folder setting
SD958 Restoration target number folder setting
SD1353 Upper limit value setting for the number of CPU module backup data
SD1662 Tracking transfer data receive completion wait time
SD1667 to SD1670 Tracking transfer trigger
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