Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 394

8 TROUBLESHOOTING
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10) Each station pairing status (SW01F8 to 1FB)
Displays the status of the pairing setting.
• No pair
• Pair
11) Each station PLC system status (SW01FC to 1FF)
Displays the system status of the Redundant CPU.
"---" indicates that the CPU is other than the Redundant CPU.
• Control system
• Standby system
: Station not specified for pairing
: Station specified for pairing
: Operating as the control system
: Operating as the standby system
MELSEC-Q
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