Siemens SIMATIC ET 200AL Manual page 42

Behavior DQ
With the "Behavior DQ" you select the counter values at which the count output is set.
When the current count value fulfils the parameterized condition, the associated count output
is set.
This means the signal state "1" is set at the count output when:
● Count value between a comparison value and the high counting limit:
Comparison value ≤ Count value ≤ High counting limit
or
● Count value between a comparison value and the low counting limit:
Low counting limit ≤ Count value ≤ Comparison value.
Hardware interrupt DQ
With this parameter you specify whether or not a hardware interrupt is generated by the
event "Comparison event occurred for DQ".
Behavior at CPU/master STOP for DQ
With this parameter you set the reaction of the count output of a counter after a CPU/master
STOP.
Behavior DQ:
● Continue: Signal state of the count output continues to be controlled by comparison
conditions.
● Output substitute value: The count output outputs a configured substitute value.
Note
Count value at CPU/Master STOP
Independently of the selected reaction of the count output, the count value continues to
change during a CPU/Master STOP depending on the input edge, counting continues.
Substitute value DQ
With this parameter you set the substitute value of the digital output of a counter if the setting
"Output substitute value" has been selected at the parameter "Behavior at CPU/master
STOP for DQ".
Behavior DI (gate control)
With this parameter you select whether a counting function is assigned to the digital input or
whether this functions like a standard digital input:
● Gate start/stop:
The digital input influences the internal gate of Counter 0 or Counter 1. Signal "1" at the
digital input opens the HW gate for the counter. Signal "0" at the digital input closes the
HW gate for the counter.
● Digital input without function:
No counting function is assigned to the digital input. It functions like a standard digital
input.
Digital input/Digital output module DIQ 16x24VDC/0.5A 8xM12 (6ES7143-5AH00-0BA0)
Manual, 03/2019, A5E38688112-AC
4.1 Configuration method 2xCount
Counting
41