Mitsubishi Electric MELSEC iQ-R Series User Manual page 187

■Refresh device
Redundant system uses a program to refresh the remote input (RX), remote output (RY), and remote register (RWr, RWw).
Use module parameters to make refresh settings for the link special relay (SB) and link special register (SW).
Refresh device and refresh range of CC-Link used by the system (five stations are used) of this example are as follows.
Change the transfer range of the CC-Link device and range of the CPU device depending on the number of systems and
module type to be used.
Device
*1
X1000 to X109F
*1
Y1000 to Y109F
*1
W1100 to W1113
*1
W1000 to W1013
BT11_1 (module label)
*1 Labels can be also used.
*2 Link refresh allows for auto transfer.
■System switching following program for the standby system
(0) When the system is switched from control system to standby system by redundant system switching, turn on 'Forced master switching' (SB000C).
Description
Link device
Remote input (RX00 to RX9F)
Remote output (RY00 to RY9F)
Remote register (RWw00 to RWw13)
Remote register (RWr00 to RWr13)
Link special relay (SB0000 to
SB01FF)
Link special register (SW0000 to
SW01FF)
Appendix 8 How to Use Standby Master Function in Redundant System
Start address of buffer
memory
224 (E0H)
352 (160H)
480 (1E0H)
736 (2E0H)
1504 (5E0H)
1536 (600H)
Number of transfers (word)
10
10
20
20
*2
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APPX
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