Siemens SIMATIC ET 200SP Equipment Manual page 39

Fault detection
The following table presents fault detection according to the sensor supply and the
parameter assignment for the short-circuit test:
Table 5- 3
Fault
Short-circuit of the
input with other
channels or other
sensor supplies
(short-circuit with
other channels is
detected only if they
use a different sensor
supply)
Short-circuit of the
input with the
associated sensor
supply
Short-circuit with L+ to
DI
n
Short-circuit with M to
DI
n
Discrepancy error
Short-circuit with L+ to
VS
n
Short-circuit with M to
VS
n
*) Fault detection only if signals are corrupted. That is, the read signal differs from the sensor signal. 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 8x24VDC HF (6ES7136-6BA01-0CA0)
Equipment Manual, 10/2021, A5E50578307-AA
Fault detection
Internal sensor supply
and short-circuit test
or defective
5.2 Application 1: Safety mode SIL3/Cat.3/PLd
Fault detection
Internal sensor supply
and short-circuit test
activated
Yes*
No
Yes
Yes*
—
Yes
Yes
Applications of the F-I/O module
External sensor
deactivated
No
No
No
Yes*
—
No
Yes
supply
No
No
No
No
—
—
—
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