Omron ZEN Quick Guide

7 Programming Functions ZEN Programmable Logic Module
OMRON ELECTRONICS, S.A. Page 21
7. Programming Functions
7.1. Timers (T) and Holding timers (#)
ZEN has the capacity to use 8 normal timers and 4 holding timers.
Timers The present value of the current timer is reset when ZEN switches from
Run mode to Stop mode or when the power supply is turned off.
Holding Timers The present value of the timer will be maintained even when ZEN
switches from Run mode to Stop mode or when the power supply is
turned off. The time will continue running when the input ‘trigger’ is in ON
mode again. The ON status of the timer bit will also be maintained.
It is only supported by the holding timers at connection.
Timer Operation (T0 to T7)
Timer Type Operation Applications
X Timer at
connection
Output is activated
when the set time
elapses on the input
being triggered.
Delay operations
in On-status
n Timer at
disconnection
Output is activated
from when input
switches to ON
mode until the set
time elapses.
Useful for timers,
lighting or
ventilation fans
O Flashing pulse
timer
The set timer bit
switches the
selected time to ON
mode when input
changes from OFF
mode to ON mode.
Useful for
repetitive
operations when
the operation to
be carried out
requires the same
time period
F Flashing pulse
timer
The set timer bit
switches repeatedly
from ON mode to
OFF mode, while
input is in ON mode
Useful as an
alarm circuit, for
visible or audible
emergency
alarms.
Note. The ‘n’ code means ‘null’ (blank code on the console)

Omron ZEN Specifications

General

Display	LCD
Mounting Type	DIN Rail
Operating Temperature	-10 to 55°C
Power Supply Voltage	100-240V AC
Output Type	Relay, Transistor
Number of Outputs	4-8
Programming Language	Ladder Logic