ABB 07CR41 Operating Manual page 53

Figure 7: Correct bus cabling
Remote Vorort-
Bus master
Busmaster
unit
Modul
Figure 9: Correct bus topology
Figure 11a: Correct symmetrically twisted pair
Advant Controller AC 31 / Issued: 08.99
Remote Vorort- Vorort- Remote
unit unit
Modul Modul
Vorort- Vorort-
Remote
Remote
Modul unit Modul
unit
Figure 8: Incorrect bus cabling
Vorort-
Remote
Master
unit
Modul
Vorort-
Remote
Modul unit
Figure 10: Cabling with spur lines not permissible
Figure 11b: Incorrectly twisted pair
4 – 5 Installation
Vorort- Vorort-
Remote
Remote
unit
unit
Modul Modul
Vorort-
Remote
Modul unit
3