Lenze I/O system 1000 - Parameterising the Counter; Counter 32 Bits, 24 V DC - EPM-S600

7 EtherCAT communication
7.7 Parameterising the counter
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Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17
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7.7 Parameterising the counter
7.7.1 1 counter 32 bits, 24 V DC - EPM-S600
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 a differentiation between the internal gate (I-gate), hardware gate (HW gate), and
software gate (SW gate) is made.
• The I-gate is the AND logic operation of the software gate (SW gate) and the hardware
gate (HW gate).
• The SW gate is controlled via your user program (status word in the output area).
• The HW gate is controlled via the digital gate input.
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.
Latch function If a positive edge occurs at the latch input, the current count value is stored in the latch
register. The latch register is accessed via the input area. After a STOP-RUN transition, latch
is always 0.
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.