Pilz PSSu E S INC 24V se - Manual (Page 18)

Function description
Operating Manual PSSu E S INC 24V se(­T)
1001380­EN­03 18
INFORMATION
In Counter operating mode, a rising edge at input C stops the counter.
a b
PIO
C
PII
c d e
Legend:
} PIO: Bit 0 of the function call in the process image of outputs or I/O datum Out­
putData.ZeroPulseActive
} C: Input C
} PII: Bit 0 of the status byte in the process image of inputs or I/O datum InputData.Zer­
oPulse
Key to timing diagram:
Section Function
Procedure for PSSu in sys­
tem environment A Procedure for PSSu in sys­
tem environment B
a Activate zero
pulse function In the user program, set Bit 0
of the function call In the user program, set
OutputData.ZeroPulseActiv
b Fill latch memory Rising edge at input C:
Counter status is transferred
to the latch memory Rising edge at input C:
Counter status is transferred
to the latch memory
c Output counter
status
Set status bit
Counter status is transferred
to the process image of in­
puts
The module sets Bit 0 of the
status byte
Counter status is written in
InputData.LatchOrPeriod
The module sets In­
putData.ZeroPulse
d Finish zero pulse
function In the user program, reset Bit
0 of the function call In the user program, reset
OutputData.ZeroPulseActiv
e Ready for new
latch function The module resets Bit 0 of
the status byte The module resets In­
putData.ZeroPulse
The zero pulse function has priority over the latch function and the "Period length measure­
ment" function. If this function is activated, both the other functions are ignored, even if they
have been activated.
The module always transmits the counter status when the first zero pulse occurs after the
function has started. The counter statuses on all subsequent zero pulses are ignored until
the function has been completed and reset.