YOKOGAWA F3LR02-0N, User Manual

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C3-1
IM 34M06H45-01E 7th Edition : Aug.30, 2019-00
C3. FA-bus Type 2 System Configuration
C3.1 System Elements and Terminology
The FA-bus Type 2 system contains the following elements.
Table C3.1 System Elements
Element Description
Main unit The unit installed with a CPU module.
Subunit
The unit with no CPU module, which is connected to the
main unit for system expansion through FA-bus Type 2
modules.
The following table lists some system configuration terms used in this manual.
Table C3.2 Terminology
Term Meaning
Station The unit with FA-bus Type 2 module (i.e., main unit or
subunit)
Own station The unit
The other station The unit connected to the own station
Intermediate station The subunit between the main unit and the terminal
station in the daisy-chain configuration
Terminal station
The subunit in the star configuration or the subunit
farthest from the main unit in the daisy-chain configuration