ABB S800 I/O Manual page 17

Section 1 Introduction
I/O Station modules are mounted on DIN rails and are connected by the ModuleBus.
Figure 2
Figure 2. CI801 FCI Module and TB842 Optical ModuleBus Port
3BSE020926-600
shows the FCI modules connected to the Optical ModuleBus Port TB842.
1
TB842
TB806
PROFIBUS
Connector
LED Status
Indicators
Address
Switch #1
Product Scope
ModuleBus
Interface
Connector
Power Supply
Address
Switch #2
17