ABB AC 800M Manual page 37

Section 1 Introduction
PROFIBUS DP, FOUNDATION Fieldbus H1, FOUNDATION Fieldbus High Speed
Ethernet and dual RS-232C ports are some examples of unit types available for
connection to the CEX-Bus. It is possible to use redundant communication
interfaces, for example PROFIBUS DP.
Figure 6
units. It can be seen, at the top right-hand area of
cluster (or group) of units (maximum number of units per cluster is 12) is connected
to the electrical ModuleBus of an AC 800M Controller. However, a further seven
clusters (each comprising up to 12 units) can be added to the optical ModuleBus,
thus achieving a total count of 96 units per AC 800M Controller when using only
the ModuleBus.
Connecting S800 I/O units (using the ModuleBus) to an AC 800M Controller
mounted with a PM851/PM851A processor unit is restricted to, one electrical
ModuleBus cluster and one optical ModuleBus cluster.
To the left on
for a large increase in the numbers of units connected to each AC 800M Controller.
Here the segment is shown as having an FCI unit (type CI801), connected to the
PROFIBUS DP network. The use of FCI units allows the selection of units from
several I/O families.
Figure 7
FOUNDATION Fieldbus High Speed Ethernet (FF HSE).
For further examples refer to the relevant documentation for the I/O system in
question.
3BSE036351-510 A
on page 38 provides examples of various ways to connect the S800 I/O
Figure 6 on page 38, there is a PROFIBUS DP segment. This allows
on page 39 shows another example for I/O units based on a
PM8xx/TP830 Processor Unit – General
Figure 6 on page 38, that one
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