Transferring Safe Position Values (Sp) - Siemens Sinamics S120 Function Manual

3.2.12

Transferring safe position values (SP)

The "Safe Position (SP)" function enables you
to transfer safe position values to the higher-
level fail-safe controller (F-CPU) via PROFIsafe
(telegram 901 or 902).
From the position change over time, the F-CPU
can also calculate the current velocity. In tele-
gram 902, the values are transferred in 32-bit
format, in telegram 901, in 16-bit format.
After parameter assignment, release and POWER ON, the function is automatically selected
and the values transferred. Please observe the following:
● For use as the safe absolute position, the "Absolute position" must also be enabled and
then safely referenced.
● In order that the transferred position can be used, the actual position value must be valid.
Using the time stamp that is also transferred, you can also calculate the velocity from the
position values. If you only want to calculate the velocity, it is sufficient to enable the
"Transfer of safe position values" without the "Absolute position."
Details and parameterization
For further details and information on how to parameterize this function, see Section
"Transferring safe position values (SP) (Page 129)".
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Overview of Safety Integrated functions
3.2 Safety Integrated Extended Functions
59