Siemens SIMATIC ET 200S Operating Instructions Manual page 91

Gate control by means of the SW gate and HW gate
If the SW gate opens when the HW gate is already open, counting continues starting from
the current count.
When the HW gate is opened, one of the following occurs, depending on the parameter
assignment:
• Counting continues from the current count
• Counting starts from the load value
If the SW gate is opened in isochrone mode in bus cycle "n" by setting the SW_GATE control
bit, counting starts in cycle "n+1" before or after T
time. If the HW gate opens after the SW gate has been opened, then counting does not start
until the HW gate opens.
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05
or
2.8 Position Detection
, if the HW gate is already open at this
i
1Count24V/100kHz
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