8
PROGRAMMING
8.3 Using Link Special Relay (SB) and Link Special Register (SW)
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(10)Checking CPU module status
The CPU module status is checked through the CC IE Control Network Diagnostics,
but it also can be checked with link special relay (SB) and link special register (SW).
(
Section 10.3 CC IE Control Network Diagnostics)
(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 (SB00F0)
• CPU RUN status of each station (SW00F0)
2) When a continuation error occurs with the CPU module, CPU operation status
of each station (2) (SB0110) 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) (SW0110).
3) When a stop error occurs with the CPU module, CPU operation status of each
station (1) (SB0100) 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) (SW0100).
(b) Checking CPU module status of own station
1) Whether the CPU module is in RUN status or STOP status can be checked
with Own station's CPU RUN status (SB005B).
2) When a continuation error occurs with the CPU module, Own station's CPU
status (1) (SB004A) is turned ON.
When a stop error occurs with the CPU module, Own station's CPU status (2)
(SB004B) is turned ON.
3) The CPU module status can be checked with Own station's CPU status
(SW004B).
Table 8.32 SB/SW used in checking CPU module status of other stations
No.
Description
No.
Description
SB00F0
CPU RUN status of each station
SW00F0
CPU RUN status of each station
SB0100
CPU operation status of each station (1)
SW0100
CPU operation status of each station (1)
SB0110
CPU operation status of each station (2)
SW0110
CPU operation status of each station (2)
Table 8.33 SB/SW used in checking CPU module status of own station
No.
Description
No.
Description
SB004A
Own station's CPU status (1)
—
SB004B
Own station's CPU status (2)
SW004B
Own station's CPU status
SB005B
Own station's CPU RUN status
—
Summary of Contents for QJ71GP21-SX
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