Siemens Simatic S7-1500 Manual page 43

Parameter assignment
Assign the following parameters for the corresponding channel:
Table 5- 6
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- 7
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
*) 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.
Digital input module F-DI 16x24VDC (6ES7526-1BH00-0AB0)
Manual, 01/2016, A5E03858068-AA
Parameter assignment
Fault detection
n
n
Sn
or defective
Sn
Applications of the F-I/O module
5.4 Application 3: Safety mode SIL3/Cat.4/PLe
Channel with internal sensor supply
1oo2 evaluation, equivalent
Channels [x...y]
Enable
Fault detection
Internal sensor supply and short-circuit test activated
Yes* / Yes (for channel whose short-circuit test is
No
Yes*
activated)
Yes*
Yes
Yes
Yes
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