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

7.9

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 7- 6 Overview of operating modes
Operating mode of Functionality
X142 I/Os
(8 channels)
DI Digital input
•
•
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 application cycle (e.g. for use as
an output cam output)
Oversampling DI Acquisition of 32 states of a digital
input signal at equal intervals per
application cycle
Oversampling DQ Output of 32 states of a digital output
signal at equal intervals per applica-
tion cycle
Event/period dura- Measurement of number of edges
tion measurement and period duration (e.g. for simple
speed measurement with hole mask
and light barrier)
Pulse width modu- Output of a configurable pulse-pause
lation PWM ratio with a configurable frequency
SIMATIC Drive Controller
System Manual, 11/2019, A5E46600094-AA
Input delay (1 µs/125 µs)
Hardware interrupt (optional)
7.9 Configuration of digital inputs/outputs (X142)
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
No OB restrictions
Output cam
•
Cam track
•
Measuring input OB 91/OB 6x
(OB 91 required) required
OB 91/OB 6x
Output cam
•
required
(OB 91 required)
Cam track (OB 91
•
required)
--- OB 91/OB 6x
required
--- OB 91/OB 6x
required
--- OB 91/OB 6x
required
--- No OB restrictions
Configuring
Isochronous
mode
Optional
Optional
Required
Required
Required
Required
Required
Optional
109