Siemens SIRIUS ACT 3SU1 System Manual page 344

IO-Link 3SU14
12.3 Electronic modules for IO-Link
Switching input
Description
A value at the input is read in this mode. Signal changes are monitored. The actual value of
the relevant counter "Switching cycle number" is incremented by a predefined signal change.
The actual value of this counter is compared to the parameterized number of switching
cycles. If the actual switching cycle number reaches this value, the switching cycle number
status is set to "threshold reached". If the actual switching cycle number reaches 4 294 967
295 (0xFFFFFFF [hex]), counting ceases and the status for the switching cycle number is set
to "expired". If the actual switching cycle number is lower than the number of switching
cycles and less than 4 294 967 295 (0xFFFFFFF [hex]), the status for the switching cycle
number is set to "active". When the switching input mode is deselected, the status for the
switching cycle number is set to "deactivated". The actual switching cycle number is stored
in a buffer memory and is available as the start value for continued counting when the
switching input mode is selected again. When the device is switched off, the actual switching
cycle number is transferred to the non-volatile memory of the device so that it can be
retrieved when the device is next switched on.
The actual switching cycle number can be reset to zero by the following methods:
● Change the number of switching cycles.
● Switch over from the switching input mode to the switching output mode, and vice versa.
● Change the type of counted edges.
● Use the standard command "Restore factory setting".
● Use the standard command "Application Reset".
● Use the standard command "Reset switching cycle counter at pin x" (x refers to the
number of the corresponding IO).
● Use the standard command "Switching cycle counter at pins 1-8".
Parameters
● Input delay
● Threshold switching cycle counter
● Active edges
● Inverting input
344
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010