Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 220

6 PROGRAMMING
No.
SB0080 CPU operation status of each station (1)
SB0084 CPU RUN status of each station
SB0088 CPU operation status of each station (2)
No.
SB004A Host CPU status (1)
SB004B Host CPU status (2)
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(10) Checking CPU module status
The CPU module status is checked through the GX Developer network
diagnostics, but it also can be checked with link special relay (SB) and link
special register (SW). (Refer to Sections 8.1.2 and 8.1.3.)
(a) Checking the CPU module status of other stations
1) Whether the CPU module is in RUN status or STOP status can be
checked with the following link special relay (SB) and link special
register (SW).
• CPU RUN status of each station (SB0084)
• CPU RUN status of each station (SW0084 to SW0087)
2) When a continuation error occurs with the CPU module, CPU
operation status of each station (2) (SB0088) is turned ON.
The station No. of the station where a continuation error is occurring is
stored in CPU operation status of each station (2) (SW0088 to
SW008B).
3) When a stop error occurs with the CPU module, CPU operation
status of each station (1) (SB0080) is turned ON.
The station No. of the station where a stop error is occurring is stored
in CPU operation status of each station (1) (SW0080 to SW0083).
Description
(b) Checking the CPU module status of the host
1) When a continuation error occurs with the CPU module, Host CPU
status (1) (SB004A) is turned ON.
When a stop error occurs with the CPU module, Host CPU status (2)
(SB004B) is turned ON.
2) The CPU module status can be checked with Host CPU status
(SW004B).
Description
No.
SW0080 to
CPU operation status of each station (1)
SW0083
SW0084 to
CPU RUN status of each station
SW0087
SW0088 to
CPU operation status of each station (2)
SW008B
No.
SW004B Host CPU status
MELSEC-Q
Description
Description
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