Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 222

6 PROGRAMMING
No.
SB01F4 Redundant system status (1)
SB01F8 Redundant system status (2)
SB01FC Redundant system status (3)
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(b) Checking the redundant system status
1) When a Redundant CPU in separate mode exists, Redundant
system status (1) (SB01F4) is ON.
The operation mode of a redundant CPU can be checked in
Redundant system status (1) (SW01F4 to SW01F7).
2) When any pairing setting exists, Redundant system status (2)
(SB01F8) is ON.
Stations for which the pairing setting is done can be checked in
Redundant system status (2) (SW01F8 to SW01FB).
3) When a station operating on the standby system exists, Redundant
system status (3) (SB01FC) is ON.
The control or standby status of a Redundant CPU can be confirmed
with Redundant system status (3) (SW01FC to SW01FF).
Description No.
SW01F4 to
Redundant system status (1)
SW01F7
SW01F8 to
Redundant system status (2)
SW01FB
SW01FC to
Redundant system status (3)
SW01FF
MELSEC-Q
Description
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