Siemens Simatic S7-1500 Manual page 40

Simatic s7-1500/et 200mp digital input module f-di 16x24vdc

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Applications of the F-I/O module

5.4 Application 3: Safety mode SIL3/Cat.4/PLe

Parameter assignment

Assign the following parameters for the corresponding channel:

Table 5- 4

Parameter

Sensor evaluation

Supplied channels

Short-circuit test activated

Fault detection

The following table presents fault detection according to the sensor supply and the

parameter assignment for the short-circuit test:

Table 5- 5

Fault

Short-circuit within the channel

pair

Short-circuit with other channels

or other sensor supplies

Short-circuit with L+ to DI

Short-circuit with M to DI

Discrepancy error

Short-circuit with L+ to U

Short-circuit with M to U

fective

*) Fault detection only if signals are corrupted. That is, the read signal differs from the sensor signal

(discrepancy error). If there is no signal corruption with respect to the sensor signal, fault detection

is not possible and is not required from a safety standpoint.

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