Sequence Program Example For Small Oscillation During Standstill Monitoring - Mitsubishi Electric MELSEC Q Series Programming Manual

2 SAFETY OBSERVATION FUNCTION

2.7.3 Sequence program example for small oscillation during standstill monitoring

* Small oscillation
P370
11
14
Sequence program example (Motion CPU side) for small oscillation during standstill
monitoring is shown below. The user safety sequence program for small oscillation on
PLC CPU side is not required.
(1) Devices
(Note-1)
X300
(Note-1)
X301
(Note-1)
Y301
(Note-2)
M100
M101
M2001
M2402
M2415
SM57
(Note-1): When the speed monitoring I/O device No. is set to 300.
(Note-2): Turn it on by the user program at intervals within one hour during the standstill
monitoring.
(2) Program example
M100 X300 X301
0
Small Small
SOS exec
oscillation oscillation
uting
enable executing
M101
Small
oscillation
start
(3) Operation outline
(a) When M100 is turned ON program during standstill monitoring, small
oscillation request signal (Y301) is turned ON.
At this time, confirm that the target axis (axis 1) for the small oscillation is:
• Not during positioning
• In the state of servo ON and in-positioning
(b) When the small oscillation is completed, Y301 is automatically turned OFF.
: Standstill monitoring executing flag
: Small oscillation executing flag
: Small oscillation request signal
: Small oscillation enable flag
: Small oscillation start flag
: Axis1 start accept flag
: Axis1 in-position flag
: Axis1 servo ON flag
: Safety observation error flag
M2001 M2402 M2415
Axis1 Start
Axis1 In Axis1
accept flag
position Servo ON
2 - 24
SM57
PLS
Safety
observation
error
SET
RST
M101
Small
oscillation
start
Y301
Small
oscillation
request
M100
Small
oscillation
enable
END