Omron ZEN Operation Manual page 54

Memory Areas
Normal output [
Set/Reset S (set)
R (reset)
Alternate A
Timers and Counters
Name Type Bit ad-
dresses
Timer T 0 to f
Holding # 0 to 7
timer
Counter C 0 to f
8-Digit F 0
counter
Weekly @ 0 to f
timer
Calendar 0 to f
timer
Timer Types
X ON delay Times down while the trigger input is ON and turns ON the timer bit when the set
time is reached.
■ OFF
Turns ON the timer bit while the trigger input is ON, starts timing down when the
delay trigger input turns OFF, and turns OFF the timer bit when the set time is reached.
O One-shot Turns ON the timer bit for the set period when the trigger input changes from OFF
to ON only.
F Flashing Timer bit repeatedly turns ON/OFF at set intervals while the trigger input is ON.
pulse
W Twin Timer bit repeatedly turns ON/OFF at set intervals while the trigger input is ON. The
ON time and OFF time can be set separately.
30
Turns ON or OFF according to the ON/OFF status of the execution
condition.
Holds ON status after the execution condition turns ON once.
Holds OFF status after the execution condition turns ON once.
Alternates between ON and OFF whenever the execution condition
turns ON (input latch operation).
No. of
timers/
counters
16 Can be switched between ON
delay, OFF delay, one-shot, flashing
pulse, and twin timer
operation.(See note.)
8 Hold the present value during
counting even if the trigger input or
power supply is turned OFF.
Continues the timing when the
trigger input or power supply is
turned ON again.
16 Four-digit reversible counters that
can be incremented and
decremented.
1 An eight-digit reversible counter
that can be incremented and
decremented. CPU Units with DC
power supplies support a high-
speed counter up to 150 Hz.
16 Can be switched between normal
operation, operation between days,
and pulse output operation. Cannot
be used for LED-type CPU Units.
16 Can turn ON or OFF during a
specified date period. Cannot be
used for LED-type CPU Units.
Function
Section 1-4
Use in Page
ladder
programs
N.O./N.C. 74
condition
74
78
78
81
86