S120 Combi Power Modules 
  3.4 Connection examples 
SINAMICS S120 Combi 
Manual, Edition 07/2012, 6SL3097-4AV00-0BP3 
81 
●  BiCo connections from the sequence control to digital outputs on the Control Unit 
–  BICO interconnection to "open servo holding brake" 
• BiCo in CU_I-p0744: Servo2-r0899.12 
• BiCo in CU_I-p0745: Servo3-r0899.12 
–  Output definition in CU_I 
• CU_I-p0728.14 =1 
• CU_I-p0728.15 =1 
 
 
Note 
The circuit shown above is only an example. 
A wiring diagram of the digital inputs/outputs on the PPU can be found in the SINUMERIK 
828D Manual PPU Edition 11/2010 in Point 6 "Connecting".