Siemens SIMATIC ET 200SP HA Equipment Manual page 45

Parameter assignment
Assign the following parameters for the corresponding channel:
Table 6-4
Parameter
Sensor evaluation
Short circuit test
Sensor supply
Fault detection
The following table presents fault detection according to the sensor supply and the parameter
assignment for the short circuit test:
Table 6-5
Fault
Shorted within the channel pair
Shorted to other channels or other
sensor supplies
Shorted to L+ at DI
Shorted to M at DI
Discrepancy error
Shorted to L+ at UV
Shorted to M at UV
*) 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.
F-DI 16x24VDC HA
Equipment Manual, 08/2021, A5E45647528-AD
Configuration for internal/external sensor supply
Channel with internal sensor
supply
1oo2 evaluation, equivalent
•
•
Internal
Fault detection with internal/external sensor supply
Internal sensor supply, and
short-circuit test disabled
n
n
n
or defect
n
6.3 Application 2: Safety mode SIL3/Cat.3/PLe
Disabled
Enabled
Fault detection
No
Yes*
Yes*
Yes*
Yes
No
Yes
Applications of the F-I/O module
Channel with external sensor
supply
Disabled
External
External sensor supply
No
Yes
Yes*
Yes*
Yes
No
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