Startup Time Of Sensors After Short-Circuit Test; Parameters Of The Channel Pairs; Sensor Evaluation - Siemens Simatic S7-1500 Manual

4.2.2.4

Startup time of sensors after short-circuit test

Function
In addition to the switch-off time ("Time for short-circuit test"), a startup time must be
specified for performing the short-circuit test. You use this parameter to notify the module
how long the utilized sensor needs to start up after turning on the internal sensor supply.
This prevents an undefined input state due to transient reactions in the sensor.
Note the following during parameter assignment:
● This parameter must be greater than the transient recovery time of the employed sensor.
● Because the assigned time affects the response time of the module, we recommend that
you set the time as short as possible but long enough so that your sensor can settle
safely.
● The "Startup time of sensors after short-circuit test" must
– be set to a value greater than the set input delay
– be at least 1% of the "time for short-circuit test"
– be 0.5 ms greater than the set input delay.
Requirement
The short-circuit test is enabled.
4.2.3

Parameters of the channel pairs

4.2.3.1

Sensor evaluation

Overview
Select the type of sensor evaluation with the "Evaluation of the sensors" parameter:
● 1oo1 evaluation
● 1oo2 evaluation, equivalent
● 1oo2 evaluation, non-equivalent
1oo1 evaluation
With a 1oo1 evaluation, the sensor occupies only one input channel.
Digital input module F-DI 16x24VDC (6ES7526-1BH00-0AB0)
Manual, 01/2016, A5E03858068-AA
Parameters/address space
4.2 Explanation of parameters
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