Siemens SIMATIC ST-1500 Function Manual page 183

Using the module
5.1 Using the technology module
Measuring input
This parameter is used to define the hardware input which is used as the external measuring
input for saving the encoder position.
You can select from the following options:
Option
None
(default)
DI1
182
Meaning
No external measuring input is used.
The current counter value is saved at rising or falling edge of the DI1 hard-
ware input.
Counting, measurement and position detection
Function Manual, 12/2017, A5E32009889-AG