Siemens Simatic S7-200 CPU 210 System Manual page 45

Zone 1
If not armed and either
Zone 1 or Zone 2 is open,
flash the LED on and off.
On and
Off
If disarmed, then turn off the outputs
and stop the alert timer.
Off
Figure 3-4 Basic Tasks for the Home Security Application Program
S7-200 Programmable Controller, CPU 210
C79000-G7076-C235-01
Getting Started with a Sample Program
Zone 2 Armed
When armed turns on,
start the exit timer and
turn on the LED.
On
If the system is armed and the exit timer is >= 90 seconds,
and if either Zone 1 or Zone 2 is open, then start the alert
timer and turn on the low-level alert notification.
If not disarmed and the alert timer is >=
60 seconds, then sound the alarm, start the
modem dialer, and turn off the low-level alert.
Panic Alarm
Turn on the alarm and start
the modem dialer.
On
On
Off
On
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