Pilz PSSu E S INC 24V se - Manual (Page 15)

Function description
Operating Manual PSSu E S INC 24V se(­T)
1001380­EN­03 15
} Quadruple evaluation (default):
Each rising and each falling edge at channel A and channel B increases the counter
status.
4.1.4 Counter operating mode
In counter operating mode, the module's single­pole inputs A, B, C have the following func­
tions:
} Input A (Count)
Input A is the input for the encoder's counter pulses. The module counts each rising
edge.
} Input B (Up/down)
At a 0 signal the module counts forwards. At a 1 signal the module counts backwards.
} Input C (Gate/Latch)
The counter is stopped with a 1 signal. The module ignores the counter pulses at the in­
put until a 0 signal returns.
C
G
L
a b c d e
B
A
Legend:
} 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 activated, 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
4.1.5.1 Measure period length
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 im­
age of inputs as multiple of 200 ns.
Prerequisite: This function is configured in the PSSu Configurator / PAS4000.