V04.00 | 2021/05
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4.3.2 Digital modules – extended digital functions
In PROFINET, the extended digital functions are configured via device parameterization via
GSDML file. In EtherNet/IP, the functions are provided in special catalog files for RSLogix from
Rockwell Automation. In Modbus TCP the extended functions are configured via Modbus re-
gisters. In addition to that, the functions are configurable via the device's web server or the
device DTMs.
The digital TBEN modules provide the following extended digital functions:
Digital filter
The function "digital filter" extends the filter time of digital inputs to 3 ms. Digital input signals
can thus be reliably detected even when short-term interfering signals in rough environments
occur.
Impulse stretch
The function "impulse stretch" allows a detection of short signals in longer PLC cycle times by
means of signal extension.
Counter function
A counter is always available on the first input channel.
n 32-bit counter
n Rotation speed monitoring up to 10 kHz without rotational direction detection
n Detection of many pulses in short intervals
n Detection of one track
PWM function
The PWM function is provided at the channels 3 (except for TBEN-Sx-4DIP-4DOP) and 7.
n Applications: Dimming of indicator lights, LEDs etc.
n Fix frequency setting of 100 Hz
n Mark-to-space ratio: 0…100 %
0: off (digital 0)
100: on (digital 1)
n Operational range: 10…90 %
n Accuracy (mark-to-space ratio in operational range) 5 %
n Duty-Cycle (mark-to-space ratio): 0…100 in %,
default 0,
example: 20: Duty cycle 20 to 80 = ratio "on" to "off
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