App; Appendix 4 Program Examples; X102; Contact T1 - Mitsubishi Electric MELSEC iQ-F Series Training Manual

Appendix 4.3
1.
Arrange timers in series to obtain necessary time.

X102

0
T9
5
T10
11
X102
Normally open
contact T9
Normally open

contact T10

Y172
2.
Use timers and counters to obtain necessary time.
Time limit of a timer × Set value of a counter = Long-time timer (Note that the accuracy of timers is accumulated.)
X102 M56 Y173
0
X102 C7
7
Y173
T14
12
Y173
C7
18
24
X102
Coil T14
Normally open
contact T14 (M56)
C7
Y173
* Obtain necessary time by counting the number of timeouts of the timer T14 with the counter C7.
M56 resets T14 after a timeout. With C7, the output Y173 holds its ON state when counting is up. Y173 resets T14 and stops the
subsequent time counting.
Long-time timer
2000
3000 seconds
seconds
5000 seconds
One scan
900 seconds × 4 = 3600 seconds = 1 hour
K30000
T9 3000.0 seconds
K20000
T10 2000.0 seconds
Y172 Turn on this device
after the time limit
elapses.
Project name RA-18
Program name MAIN
K9000
T14
Turn on this device
Y173
after the time limit
elapses.
K4
C7
M56
RST C7
END
APPENDICES

Appendix 4 Program Examples

A

App. - 9