Pilz PSSu E S INC - Manual (Page 21)

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4-5
4.1 Module features
4 Function description
Key:
 a: The counter counts forwards because there is 0 signal at channel
B.
 b: At the next rising edge at channel A, the counter counts backwards
because there is a 1 signal at channel B.
 c: The counter is disabled because there is a 1 signal at input C.
 d: The module has received a latch pulse. Provided the function is ac-
tivated, the counter value is copied into the latch memory with a rising
edge at input L.
 e: The counter is disabled because there is a 1 signal at input G.
4.1.5 Functions
Functions 4-
4.1.5.1 Measure period length
Measure period length 4- ][Funktionsbeschreibung_Ein ST-INC BA Periode
The module can record the period length of the counter pulses on
channel A. The period length is the time between two rising edges at
channel A. It is transferred to the process image of inputs as multiple of
200 ns.
Prerequisite: This function is configured in the PSSu Configurator /
PAS4000.
C+
G
L
a b c d e
B+
A+