Siemens SINUMERIK 840D sl Function Manual page 451

r9774.0...31 CO/BO: SI status (group STO)
Displays the status for Safety Integrated of the group to which this drive belongs.
This signals are an AND logic operation of the individual status signals of the drives
included in this group
Bit 00: STO selected in the group
1 signal: Yes, 0 signal: No
Bit 01: STO active in the group
1 signal: Yes, 0 signal: No
Bit 02: SS1 active in the group
1 signal: Yes, 0 signal: No
Bit 04: SBC requested in the group
1 signal: Yes, 0 signal: No
Bit 05: SS1 selected in the group
1 signal: Yes, 0 signal: No
Bit 06: SS1 active in the group
1 signal: Yes, 0 signal: No
Bit 31: Switch-off signal paths of the group must be tested
1 signal: Yes, 0 signal: No
See also: p9620, r9773
If a drive belonging to a group is deactivated using p0105, then the signals in r9774
can no longer be correctly displayed (countermeasure: Before deactivating, re‐
move this drive from the group).
A group is formed by appropriately grouping the terminals for the function "Safe
Torque Off" (STO). The status of a group of n drives is, for drives 1 to n-1 displayed
with a delay of one monitoring clock cycle; this is a system-related effect.
Unit: Default value:
- -
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Minimum value: Maximum value:
- -
Data descriptions
9.2 Parameters for SINAMICS S120
Checksum: Protection level:
No 2
Data type: Effectiveness:
Unsigned32 -
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