Lenze I/O system 1000 - Counters 32 Bits, 24 V DC - EPM-S601

Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17 354
7 EtherCAT communication
7.7 Parameterising the counter
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7.7.2 2 counters 32 bits, 24 V DC - EPM-S601
The following functions can be parameterised:
Counting functions Description
Continuous counting 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 "A/pulse" input
Double rotary
transducer
Quadruple rotary
transducer
Connection to input "A/pulse" and "B/direction"
Direction Pulse at "A/pulse" input and direction at "B/direction" input
Additional functions Description
Main counting
direction
The main counting direction can be parameterised:
None: The entire 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:
•Open hardware gate
• Closed hardware gate
• Counter limit overflow
• Counter limit underflow
• Comparison value reached
• Final value reached
•Latch value reached
Diagnosealarm 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.
Diagnostic function Diagnostic functions are provided by the modules.
Diagnostic
information
The diagnostic information describes the diagnostic contents that can be read out of a
module. Diagnostic information is not automatically sent by the module but must be read
out actively via SDO access.