FATEK FBs-4A2D - Page 129

Basic Function Instruction
6-4
T TIMER T
Ladder diagram Key operations Mnemonic code
X1
EN
TUP
.1S
Y0
T50
T50
R 0
An example of applying
the “time-up” status by
using the T50 contact.
ORG X 1
T 50 PV: R 0
ORG T 50
OUT
Y 0
c
d
X1
T50
When R0=100
When R0=200
Time Start
Time-Up
Time-Up
(current value)
10.0S
20.0S
Y0
Y0
0
100
200
Remark: If the preset value of the timer is equal to 0, then the timer's contact status and FO0 (TUP) become 1
("EN" input must be at 1) immediately after the PLC finishes its first scan because "Time-Up" has
occurred. (TUP) stays at 1 until "EN" input changes to 0.
c
d