Mitsubishi Electric MELSEC Q Series Reference Manual page 231

6 PROGRAMMING
No.
SB000F Clear minor errors
SB0070 Baton pass status of each station
CPU operation status of each
SB0080
station (1)
CPU operation status of each
SB0088
station (2)
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(9) Checking the remote master station's CPU module and remote I/O
station statuses (Error detection of remote I/O stations)
The status check can be performed not only with the network diagnostics in GX
Developer but also with link special relays (SB) and link special registers (SW).
(Refer to Sections 8.1.2 and 8.1.3.)
(a) Checking the remote I/O station status (Error detection of
remote I/O stations)
1) Baton pass status of each station (SB0070) turns ON when the power
is turned OFF or watchdog timer error is occurred on a remote I/O
station.
The station No. of the station where the power is turned OFF or
watchdog timer error is occurring is stored in baton pass status of each
station (SB0070 to SW0073).
2) When a stop error occurs on a remote I/O station,
of each station (1)
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).
3) When a continuation error occurs on a I/O station,
of each station (2)
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).
4) Turning ON Clear minor errors (SB000F) clears continuation errors
occurred on remote I/O stations.
Description
SW0070 to
SW0080 to
SW0088 to
POINT
Use link special relays (SB) for detection of errors of overall network, and link
special registers (SW) for detection of errors of a specific station.
(SB0080) is turned ON.
(SB0088) is turned ON.
No. Description
Baton pass status of each station
SW0073
CPU operation status of each
SW0083 station (1)
CPU operation status of each
SW008B station (2)
CPU operation status
CPU operation status
Description of the errors
detectable on remote I/O
—
Powering OFF
(disconnection)
Watchdog timer error
Stop error
Continuation error
MELSEC-Q
stations
—
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