Synchronization - Siemens SIMATIC ET 200S Operating Instructions Manual

1Count24V
2.8 Fast mode
2.8.4

Synchronization

Introduction
In order to use this function, you must first select it with the "Synchronize on Positive Edge"
Function DI parameter.
If you have assigned synchronization, the positive edge of a reference signal on the input
sets the 1Count24V to the start value.
The following conditions apply:
● Fast mode must be active (HW gate).
● The signal of a bounce-free switch or the zero mark of a rotary encoder can serve as the
● The STS_DI feedback bit indicates the level of the reference signal.
86
– When synchronization is activated, the first edge and each additional edge loads the
1Count24V with the start value.
reference signal.
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07