ABB S800 I/O Manual page 13

About This Book
Term
I/O cluster
I/O device
I/O module
I/O station
I.S.
ModuleBus
(ModuleBus) Extension
cable
MTU
OSP
PROFIBUS-DP
PROFIBUS-DPV1
PROFIBUS
TC
3BSE020926-600
Description
An extension of the I/O Station's ModuleBus connected
to the FCI by fiber optic connections. Up to 12 I/O
devices per cluster.
A complete I/O device consists of one MTU and one I/O
module.
Is an active, electronic and signal conditioning unit. Can
be a part of an I/O device or a S800L I/O module.
An I/O station consists of a base cluster with single or
redundant FCI(s), 1-7 I/O clusters and up to 24 I/O
devices.
Intrinsic Safety is a protection technique to prevent
explosion in hazardous areas of a process plant.
Is an incremental, electrical or optical, bus for
interconnection of I/O devices.
Is used when extending the electrical ModuleBus (within
the max. 2.5 meters 8.2").
The Module Termination Unit is a passive base unit
containing process terminals and a part of the
ModuleBus.
Outputs Set as Predetermined. A user configurable
action on an output module when communications is lost
to the FCI or Controller.
PROFIBUS-DP is a fieldbus standard.
PROFIBUS-DPV1 is a fieldbus standard.
Stands for both PROFIBUS-DP and PROFIBUS-DPV1.
Thermocoupler
Terminology
13