Configuration Of Digital Inputs/Outputs (X142) - Siemens SIMATIC S7-1500 System Manual

Configuring

9.9 Configuration of digital inputs/outputs (X142)

9.9 Configuration of digital inputs/outputs (X142)
You configure the required digital input/outputs and operating modes over interface X142.
Overview of supported operating modes
You can configure the following operating modes for the individual channels of the X142
interface:
Table 9- 8 Overview of operating modes
Functionality
Operating
mode of X142
I/Os
(8 channels)
DI Digital input
• Input delay (1 µs/125 µs)
• Hardware interrupt (optional)
Hardware interrupt at rising and/or falling
edge
DQ Digital output
Timer DI Acquisition of the switching time of a
digital input signal with up to two edges
per application cycle (e.g. for use as
measurement sensing input)
Timer DQ Precisely timed output of a digital output
signal with up to two edges per applica-
tion cycle (e.g. for use as an output cam
output)
Oversampling Acquisition of 32 states of a digital input
DI signal at equal intervals per application
cycle
Oversampling Output of 32 states of a digital output
DQ signal at equal intervals per application
cycle
Event/period Measurement of number of edges and
duration period duration (e.g. for simple speed
measurement measurement with hole mask and light
barrier)
Pulse width Output of a configurable pulse-pause
modulation ratio with a configurable frequency
PWM
160
Use with technology Use via I/O area
objects (TOs) (without TO)
No OB restrictions
• Hardware limit
switch for position-
ing and synchro-
nous axes
• Reference mark
• ...
No OB restrictions
• Output cam
• Cam track
• ...
Measuring input OB 91/OB 6x
(OB 91 required) required
OB 91/OB 6x
• Output cam (OB 91
required
required)
• Cam track (OB 91
required)
--- OB 91/OB 6x
required
--- OB 91/OB 6x
required
--- OB 91/OB 6x
required
--- No OB restrictions
System Manual, 11/2023, A5E46600094-AD
Isochronous
mode
Optional
Optional
Required
Required
Required
Required
Required
Optional
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