Mitsubishi MELSEC Q Series Programming Manual page 1219

Number Name Meaning
Operating Operating
SD203
status of CPU status of CPU
Explanation
This register stores the operating status of the CPU module in
the following bit pattern.
b15 to b12 b11 to b8 b7
1): Operating status 0: RUN
of CPU 2: STOP
3: PAUSE
2): STOP/PAUSE 0: Switch
cause 1: Remote contact
2: Remote operation from programming tool/
*1
serial communication, etc.
3: Internal program instruction
4: Error
*1 The item detected first is stored. (However, for the Universal
model QCPU and LCPU, the latest cause after operation
status change is stored.)
Set by
(When Set)
to b4 b3 to b0
2) 1)
S
(Every END
processing)
Corres-
Corres-
ponding
ponding
ACPU
CPU
D9
D9015
QCPU
format
LCPU
change
App-211
8
8
8
8
A
6
7
8