Mitsubishi Electronics 13JW55 Manual De Usuario
App. - 20
Appendix 4.13 Retentive timer
The input X2 switches between on and off continuously. The on-time of X2 is
accumulated and Y72 turns on according to this accumulated value n.
(1) For a ladder that accumulates a value without a retentive timer
Project name
QA-21
Program name
MAIN
M0
X2
M0
0
2
T195
D7
MOV
D7
T195
MOV
Clears D7 by time-out
Timer starts when
X2 is turned on
M1
PLS
T195
K600
M1
9
M0
12
T195
15
Y72
D7
K0
MOV
Saves current value
of timer to D7
Writes D7 to timer
when X2 is turned on
Y72 turns on by time-out
(2) When retentive timers are assigned in the device setting of the PLC parameter
Retentive timer (ST): 224 points (ST0 to ST223)
Project name
QA-8
Program name
MAIN
ST195
X2
X1
0
7
Timer starts when
X2 is turned on
X2 is turned on
ST195
RST
Can be cleared by
turning on X1
turning on X1
Cannot be cleared
by turning off
by turning off
Y72
ST195
5
K600