Operation Performed When Plc Ready Flag (M2000) Turns Off/On; Operation At The Error Occurrence - Mitsubishi Electric Melsec Q Series Programming Manual

9 OPERATION FOR MOTION SFC AND PARAMETER

9.9 Operation Performed when PLC Ready Flag (M2000) Turns OFF/ON

9.10 Operation at the Error Occurrence

This section explains about the turns off/on of PLC ready flag (M2000).
The on/off condition of PLC ready flag (M2000) differences in "Operation at STOP to
RUN" of system basic setting.
Refer to Section "3.1.3 Individual parameters" of the "Q173D(S)CPU/Q172D(S)CPU
Motion controller Programming Manual (COMMON)" for details.
[M2000 OFF ON]
If there is no fault when PLC ready flag (M2000) turns off to on, the PCPU READY
complete flag (SM500) turns on.
When this PCPU READY complete flag (SM500) turns on, Motion SFC programs can
be executed.
An automatic start Motion SFC program starts execution from the first.
[M2000 ON OFF]
When PLC ready flag (M2000) turns off, Motion SFC programs stops to execute and
the PCPU READY complete flag (SM500) turns off.
Since actual outputs PY has whole point turn off.
POINT
When the PLC ready flag (M2000) turns off, Motion SFC programs stop but
actual outputs PY in the Motion SFC programs do not turn off.
Outputs are held if Motion SFC programs stop due to error occurrence.
To turn off outputs at error occurrence, executes the following Motion SFC program.
ERROR
Processing for
the Motion SFC
program A
G0
F0
Processing for the Motion
SFC program B
P0
Whether error occurred in correspondence Motion
SFC program or not is judged by M2039 (Motion
G1
error detection flag) and #8724 (latest error Motion
SFC program No.).
F1 Outputs which must be turned OFF are turned OFF.
M2039 (Motion error detection flag) is turned OFF.
P0
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