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The TB820 ModuleBus Modem has a rotary switch that selects its cluster number, 1
to 7, on the optical ModuleBus.
Figure 1-5
shows the layout of TB820.
The ModuleBus Modem communicates with the CI810 FCI via a TB810, or
theTB815 Interconnection Unit via a TB810, and to the I/O modules. The FCI
handles the I/O-modules operations such as read and write data, read status and
configuration of modules and channels.
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1
2
7
5
3
4
6
Cluster Address
Switch
Power Supply
Connections
LED Status
Indicators
DIN Rail
Electrical ModuleBus
Interface Connector
(Address 4 shown)
Optical ModuleBus
Interface Connector
CLUSTER
SB
SA
L-
L+ L+
L-
F
R
ORx2
ORx1
P
TB820
ERx
X4
X5
Rx
Tx
Rx
Tx
Redundant Power
Supervision
Содержание S800 I/O
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