Product specifications

Section 3 Configuration I/O Systems
3BSE036351-510 A 161
In redundant CPU configuration, S800 I/O is connected through the optical
ModuleBus. Each CPU is connected to one TB840 on each cluster (see Figure 55 on
page 161).
Figure 55. Optical ModuleBus connection in redundant CPU configuration
Maximum of 7
clusters (groups)
Maximum of 12 x I/O units
2 x TB840
2 x TB840
2 x TB840
Optical
Local
ModuleBuses
Central/Remote
Redundant CPUs
Electrical ModuleBus cannot be used