Operating Modes Of The Device; Device Mode - Siemens SITRANS P Operating Instructions Manual

10.1.4

Operating modes of the device

The device can be operated as follows:
● "Functional Safety disabled" is used for operation in non-safety-related applications.
● "Functional Safety enabled" is used for operation in safety-related applications.
See also
Enabling Functional Safety (Page 166)
10.1.5

Device mode

When Functional Safety is disabled, the following device modes are displayed via the display
or remote operation:
Device mode
Functional Safety
disabled
Out of service, non-
safe mode
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
Display Description
STD Used for operation
in non-safety-rela‐
ted applications.
The safety-related
parameters of the
device are set.
FUNCT The safety-relevant
parameters and the
safety function are
validated.
O/S The device is out of
service (e.g. a firm‐
ware update is run‐
ning)
Functional Safety
10.1 Safety concept
Current output val‐ Safe current output
ue
Operating signal No
(4 to 20 mA)
Failure signal No
(≤ 3.6 mA or >
21.5 mA)
163