Counters are used to detect pulses that are faster than a controllers cycles, i.e., signals that the controller will be unable to detect properly and that therefore need to be preprocessed. This counter module detects the edges of 24-V signals as pulses, which can be counted or converted in the form of a frequency, rotational speed, or period duration. This counter module features an additional 24-V input and a 24-V output for a direct response to start pulses and to quick system state changes.

General characteristics
32-bit counter
Up to 500 KHz (quadruple evaluation)
Accommodates 24-V incremental encoders and sensors
Capturing modes:
Pulse & direction
Rotary encoder with single evaluation
Rotary encoder with double evaluation
Rotary encoder with quadruple evaluation
Counter moes:
Endless counting
Count once
Count periodically
Measuring modes:
Frequency measurement
Rotational speed measurement
Period measurement
Programmable input:
PLC input
Enable (HW gate)
Synchronization
Periodic synchronization
Latch
Latch & retrigger
Can be inverted
Programmable output:
PLC output
Counter reading >= Reference value
Counter reading <= Reference value
Counter reading = Reference value
Apply substitute value at STOP
Filter: 10/50/100/500 KHz
All inputs can be inverted
Limits for counter and readings
Hysteresis for input
Pulse duration for output
Refresh rate/averaging time for measuring modes
8 bytes of input data (counter value and status)
8 bytes of output data (preset counter value and commands)

Parameter Name	Parameter Value
Type	pulse time cycle preset
Other characteristics	programmable