Product specifications

Section 3 Configuration I/O Systems
3BSE036351-510 A 159
•S800 I/O units via CI854/CI854A and CI801, PROFIBUS DP. Support for
HART routing, and hot configuration during run.
• S900 I/O units can be connected to PROFIBUS DP.
• ABB Drives can be connected to the ModuleBus, via CI801 and also via
Modulebus on the PM8xx. Some Drives equipment can be connected directly
to PROFIBUS or PROFINET IO. Please refer to Drives-specific
documentation for more information.
• Genius remote I/O (TRIO) via the CI862 Interface
• Satt I/O on ControlNet (19” Satt rack I/O, S200 I/O and S200L I/O) via the
CI865
• PROFINET IO via CI871
For more information on supported I/O systems and units, see I/O documentation.
ModuleBus
The ModuleBus in the AC 800M controller, except PM891, consists of one
electrical and one optical unit. The PM891 consists of optical ModuleBus only.
The following are the details of the ModuleBus:
• Electrical ModuleBus, (see Figure 54 on page 160) – 1 cluster (group), with a
maximum of 12 S800 I/O units connected.
• Optical ModuleBus (see Figure 54 on page 160) – 7 clusters (groups), with
maximum 7 x 12 = 84 S800 I/O units connected.
Note that the electrical ModuleBus can only be used for connection of S800 I/O
when AC
800M is running in single CPU configuration.
PM851/PM851A is restricted to one optical ModuleBus cluster.
Use of redundancy will reduce the maximum number of S800 channels. Each
cluster may contain up to 12 single S800
I/O units or up to 6 redundant S800 I/O
units.