Configuring Timer Di Operating Mode - Siemens SIMATIC S7-1500 System Manual

9.9.3

Configuring Timer DI operating mode

Timer DI
Timer DI operating mode allows you to acquire the switching time of up to two edges per
application cycle (for example OB 91, OB 6x), for example for use as a measuring output.
• Select the Timer DI operating mode for the required channel.
Figure 9-13 Operating mode: Timer DI
Inversion
You can invert the 24 V signal to adjust it to your process. By default, the signal is not
inverted.
Input delay
To suppress faults, you can set an input delay of 1 µs or 125 µs for the input filter of the
digital inputs. Changes to the signal are only detected if they are constantly pending for
longer than the set input delay time.
To allow signals pending very briefly to be detected with timer DI (for example level of
100 µs), set an input delay of 1 µs.
When an input delay of 1 µs is set, the use of shielded cables is recommended for optimum
interference immunity.
SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD
9.9 Configuration of digital inputs/outputs (X142)
Configuring
165