Siemens SIMATIC S7-1500 System Manual page 125

Configuring
7.9 Configuration of digital inputs/outputs (X142)
Configuring Oversampling DI
1. Select the Oversampling DI operating mode for the required channel.
Figure 7-21 Oversampling DI
Note
Extending the configuration limits
A maximum of eight oversampling DI can be configured at the X142 interface. If the
Oversampling DI at X142 are not sufficient for your needs, you can increase the
configuration limits with time-based IO modules, for example:
• ET 200SP distributed I/O system: TM Timer DIDQ 10x24V
• ET 200MP distributed I/O system: TM Timer DIDQ 16x24V
You can find more information on these systems in Technology functions of the CPU
(Page 44).
Inversion
You can invert the 24 V signal to adjust it to your process. By default, the signal is not
inverted.
Input delay
To suppress faults, you can set an input delay of 1 µs or 125 µs for the input filter of the
digital inputs. Changes to the signal are only detected if they are constantly pending for
longer than the set input delay time.
To allow signals pending very briefly to be detected by oversampling DI (for example level of
100 µs), set an input delay of 1 µs.
Further information
You can find more information on the Oversampling DI operating mode in Assignment of the
control interface (Page 131) and Assignment of the feedback interface (Page 132).
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SIMATIC Drive Controller
System Manual, 11/2019, A5E46600094-AA