Using the module
5.2 Using the digital input module
Counting, measurement and position detection
Function Manual, 12/2017, A5E32009889-AG
193
In counting operating mode, you can set the following parameters for each channel.
Note
Some of the parameters and
options are not available for all digital input modules. See the
module's device manual for the associated parameters and options.
You use this parameter to specify whether the respective channel is enabled or disabled.
Each channel is enabled by default.
By configuring the input delay, you suppress signal errors at the digital inputs. Changes to
the signal are only detected if they are constantly pending longer than the set input delay
time.
Isochronous configuration is only possible if there is an input delay of 0.05 ms configured for
at least one channel. In isochronous mode, the feedback interface is updated at the time T
i
(time for reading the input data).
You can select from the following options:
● 0.05 ms
● 0.1 ms
● 0.4 ms
● 0.8 ms
● 1.6 ms
● 3.2 ms (default)
● 12.8 ms
● 20 ms
Note
If you select the "0.05
ms" option for the input delay, you have to use shielded cables for
connection of the digital inputs.
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