Parameter Assignment For Sm326; Di 24 X Dc 24V - Siemens SIMATIC PCS 7 Operating Manual

Discrepancy time
Where "1oo1 evaluation" is concerned, the value displayed is not relevant.
The discrepancy analysis is used for fail-safe inputs in order to detect errors from the
temporal characteristic of two signals with identical functionality.
The discrepancy analysis is started if different levels are determined for two associated input
signals. A test is run to see whether the difference disappears once a configurable period of
time known as the discrepancy time has elapsed. If not, there is a discrepancy error.
Monitoring of the discrepancy time extends the system response time. Therefore, select the
lowest possible number of channels with discrepancy evaluation.
6.4.6

Parameter assignment for SM326; DI 24 x DC 24V

Sensor supply via module
You can set whether the sensor is supplied via the F signal module using these parameters.
Additionally, you can also activate a short-circuit test for the supply through the F signal
module.
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB
Configuring S7F/FH hardware
6.4 Setting system parameters for F-signal modules
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