User Manual

5. Commissioning
5−87
Festo GDCP−SFC−LACI−DN−EN en 0812NH
5.6.12 Position sampling (on−the−fly measurement)
A local digital input (IN1 or IN2) not occupied by the
reference or limit switch can be used as a fast sample input.
With a falling (depe
nding on configuration: a rising) edge at
the configured sample input, the current position value is
written (in 204A/05h or 06h) into a tab of the SFC−LACI and
can afterwards be read out by the higher−level control system
(PLC/IPC) (PNU 350 or PNU 351).
Overview of parameters for position sampling (on−the−fly measurement)
Parameter / Description PNU FCT CI
Input that is going to be used for the position sampling:
value = 0:none
value = 1: IN1
value = 2: IN2
1305 x 6510/16h
Trigger mode
Value = 1:cyclic" (continuous) = record position for every rising
(depending on configuration: and/or falling) edge
Value = 2:single" (one−time) = record position only for the first rising
(depending on configuration: and/or falling) edge
352 x 204A/01h
Edge status
Value = 0: An edge was not registered.
Writing 0 resets both edge events to 0.
Value = 1: A falling edge has occurred and a new position value
was stored.
Value = 2: A rising edge has occurred and a new position value
was stored.
Value = 3: A rising and a falling edge have occurred, the respective
position values were stored.
353  204A/02h