Siemens SINUMERIK 840D sl Function Manual page 454

Data descriptions
9.2 Parameters for SINAMICS S120
p9799 SI reference checksum SI parameters (Control Unit)
Sets the checksum over the checked Safety Integrated parameters on the Control
Unit (reference checksum).
The actual checksum (r9798) calculated by the CU must be entered into the refer‐
ence checksum p9799. This therefore acknowledges the safety commissioning on
the Control Unit for the qqs integrated in the drive.
See also: r9798, p9899
Unit: Default value:
- 0000 hex
Parameters for functions integrated in the drive MM
p9801 SI enable functions integrated in the drive (Motor Module)
Sets the enable signals for the safety functions integrated in the drive and type of
selection on the Motor Module.
Depending on the Control Unit and Motor Module or Power Module being used,
only a selection of the following listed settings is permissible:
0000 hex:
Drive-integrated safety functions inhibited (no safety function).
0001 hex:
Basis functions via onboard terminals are enabled (permissible for r9871.0 = 1).
See also: p9601
Bit 00: Enable STO (SH) via terminals (Motor Module)
1 signal: Enabled, 0 signal: Lock
A change always only becomes effective after POWER ON. Exception: Changes
to p9801.0 become effective immediately.
Unit: Default value:
- 00000000 bin
454
Minimum value: Maximum value:
0000 hex FFFFFFFF hex
Minimum value: Maximum value:
- -
Checksum: Protection level:
No 3
Data type: Effectiveness:
Unsigned32 When exiting the
SI commissioning
mode
Checksum: Protection level:
Yes 3
Data type: Effectiveness:
Unsigned16 When exiting the
SI commissioning
mode
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated