YOKOGAWA F3LR02-0N, Руководство пользователя

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C3-5
IM 34M06H45-01E 7th Edition : Aug.30, 2019-00
C3.4 Connection Topology
FA-bus Type 2 modules can be connected using a loop, daisy chain or star
configuration. The following pages show examples for each of the configurations.

Loop Configuration
One main unit and multiple subunits are connected together in a loop. Port 2 of
the own station must be connected to port 1 of the other station. Always form a
loop using only one FA-bus Type 2 module in the main unit. In a loop
configuration, if a cable discontinuity or subunit down occurs, the built-in RAS
function will operate to increase system reliability.
Power
supply
Power
supply
Power
supply
Power
supply
Power
supply
Main unit
Subunit 1 Subunit 4
Subunit 3
Subunit 2
FC0352.VSD
FA-bus Type 2
module
(F3LR02-1W)
Figure C3.2 Loop Configuration
Note
- In a loop connection, port 2 of the own station must be connected to port 1 of the
other station. Otherwise, the system will not operate normally.