Ci820 Fieldbus Communications Interface - ABB S800 I/O User Manual

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The CI820 Fieldbus Communication Interface (FCI) module is a configurable
communication interface which performs operations such as signal processing,
gathering of various supervision information, OSP handling and configuration of re-
inserted I/O modules. The FCI connects to the AC 400 by way of the Advant
Fieldbus 100 twisted pair segment.
The CI820 has one AF 100 interface connection; when used in a redundant
configuration of two CI820s and one TB815 Interconnection Unit, each of the
CI820s has two AF 100 channels and uses the modem of the other CI820 which
allows use of redundant cable media.
CI820 can not be connected to any I/O modules without a TB815.
Up to 32 stations can be configured on one Advant Fieldbus 100 segment. Each FCI
has two rotary switches that select its address on the fieldbus in the range of 01 to
79. Redundant FCIs of a station must be set to the same address.
The FCI is the bus-master on the S800 I/O ModuleBus and communicates with the
S800 I/O modules. It is a pure "slave station" on the Advant Fieldbus 100 which is
controlled by a master station.
I/O Station modules are mounted on DIN rails and are connected by the ModuleBus
through the TB815 Interconnection Unit to the CI820 FCI.
3BSE 020 925R101 7