Gate Functions For Position Detection - Siemens SIMATIC ET 200S Operating Instructions Manual

3.9.3

Gate Functions for Position Detection

Software Gate and Hardware Gate
The 1Count5V has two gates
● A software gate (SW gate), which is controlled by the SW_GATE control bit.
● A hardware gate (HW gate), which is controlled by means of the digital input on the
Internal Gate
The internal gate is the logical AND operation of the HW gate and SW gate. Counting is only
active when the HW gate and the SW gate are open. The STS_GATE feedback bit (internal
gate status) indicates this. If a HW gate has not been assigned, the setting of the SW gate is
decisive. Counting is activated, interrupted, continued, and canceled by means of the
internal gate.
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
The software gate can only be opened by a positive edge of the SW_GATE control bit. It
is closed when this bit is reset. Note the transfer times and run times of your control
program.
1Count5V.
You assign the hardware gate as the function of the digital input (Function DI "HW Gate").
It is opened on a positive edge at the digital input and closed on a negative edge.
1Count5V
3.9 Position feedback
207