Mitsubishi Electric Q80BD-J71BR11, User Manual

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MELSEC
6 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION
6.5.4 Station to station test
In the station to station test, the hardware of the MELSECNET/H board, network
modules and cables between two adjacent stations can be checked.
The following explains how to conduct the station to station test:
REMARK
This section explains concerning the MELSECNET/H board.
Refer to the following manuals concerning network module settings.
• Q corresponding MELSECNET/H Network System Reference Manual (PLC to
PLC network)
• QnA/Q4AR Corresponding MELSECNET/10 Network System Reference Manual
(1) Connecting the cable
(a) Optical loop system
Connect IN and OUT of network modules, Q80BD-J71LP21-25, Q81BD-
J71LP21-25, Q80BD-J71LP21S-25, Q80BD-J71LP21G or Q80BD-
J71LP21GE with an optical fiber cable.
Side
Station
No. n
Optical fiber cable
Station to
execute test
IN
OUT
Station to
be tested
Side
Station
No. n+1
IN
OUT
(b) Coaxial bus system
Connect network modules or Q80BD-J71BR11 with a coaxial cable.
Terminal
resistor
Coaxial cable
Side
Station
No. n
Station to
be tested
Side
Station
No. n+1
Station to
execute test
Terminal
resistor