Mitsubishi Electronics 13JW55 ユーザーズマニュアル
App. - 24
Appendix 4.16 Measuring operation time
Setting an operation time to a control target is useful for judging the timing of a
component replacement and lubrication. The timer ST and data register D must
have a backup power source so that they can continue operating at a power failure.
With the contents of D31 (in one hour units) displayed externally, the program can
work as an operation timer.
Project name
QA-23
Program name
MAIN
ST250
X2
ST250
0
5
Measures in
1 hour units
1 hour units
6-minute timer
Indicates timing
to replace
to replace
K3600
D30
K0
MOV
ST250
RST
D30
K1
+
D31
K1
+
K4Y60
D31
BCD
D30
K10
=
SM400 (always ON)
21
D31
K1000
<=
25
Y70
1-hour timer
Outputs operation
time to exterior
time to exterior
The management time is set to 100 hours.
Appendix 4.17 Measuring cycle time
Measuring the operation time of a control target (from its start to end) allows
displaying the cycle time-out and managing a control time lag.
The following ladder in which the <, >, and = instructions are used to determine the
state of T200 indicates a cycle time-out and measures a time lag with the counter.
Project name
QA-24
Program name
MAIN
M56
X0
M56
0
4
Measures cycle time
In cycle
X1
M56
T200
X7
24
T200
K32760
Y70
SET
10
T200
K400
<
14
T200
K300
<
T200
K400
>=
C10
K32760
Y70
RST
C10
RST
Cycle time run out
Number of cycle times
of 3.01 to 4.00sec.
of 3.01 to 4.00sec.
Clears time out display
and accumulated counts
and accumulated counts