Lenze I/O system 1000 System Manual - Manual (Page 443)

PROFIBUS communication
Parameterising the counter
One counter 32 bits, 5 V DC − EPM−S602
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443 EDSIO1000 EN 7.0
9.7.3 One counter 32 bits, 5 V DC − EPM−S602
By integration of the GSE file VI010C19.gse you can specify all counter parameters via a
hardware configuration.
The following functions can be parameterised:
Counting functions Description
Counting
continuously The counter counts from the loading value to the counting limit, then skips to the
opposite counting limit and continues to count from there.
Counting once
The counter counts once/periodically from the loading value in the specified counting
range.
Counting periodically
Signal evaluation Description
Single rotary
transducer
Connection to input "A/pulse" and "B/direction"
Double rotary
transducer
Quadruple rotary
transducer
Direction Pulse at input "A/pulse" and direction at "B/direction"
Additional functions Description
Main counting
direction The main counting direction can be parameterised:
None: The whole counting range is available.
Forwards: Limitation of the counting range upwards. The counter counts from the
parameterised loading value in the positive direction to the parameterised final value −1
and then skips to the loading value again with the encoder pulse that is following.
Backwards: Limitation of the counting range downwards. The counter counts from the
parameterised loading value in the negative direction to the parameterised final value +1
and then skips to the loading value again with the encoder pulse that is following.
Gate function The gate function serves to start, stop, and interrupt a counting function. In the case of
this counter the internal gate (I−gate) is conform to the software gate (SW gate) which
you control via your user program (status word in the output area).
The following response can be parameterised:
Cancelling gate function:After closing the gate and opening it again, the counting process
continues from the loading value again.
Interrupting gate function:After closing the gate and opening it again, the counting
process continues with the last current counter content.
Comparator You can specify a comparison value which, depending on the count value, activates the
digital output or triggers a process alarm.
Hysteresis By specification of a hysteresis you can for instance prevent the output from being
permanently switched if the value of an encoder signal fluctuates around the comparison
value.
Process alarm The activation of a process alarm can be parameterised. A process alarm can be triggered
in the case of the following events:
l Hardware gate open
l Hardware gate closed
l Counting limit − overflow
l Counting limit − underflow
l Comparison value reached
l Final value reached
l Latch value reached
Diagnostic alarm If the diagnostic alarm is enabled in the parameter setting, it occurs if another process
alarm is triggered for the same event during a process alarm processing
.