Specifications

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3.7 Cable Connection Status Check
Check the cable connection status using the network parameters of GX Developer.
3.7.1 Station-to-station test
This test checks the hardware of the network modules and the cables.
The following explains how to check the cable between two adjacent stations.
(1) Connecting the cable
[Optical loop system]
Connect IN and OUT of two network modules with an optical fiber cable.
Side
Station
No. n
Optical fiber cable
Station to execute test Station to be tested
IN
OUT
IN
OUT
Side
Station
No. n+1
(2) Setting the test mode
Set the mode network parameters for station number n and station number n+1 to
"Test between master station" and "Test between slave station" respectively, and
write the parameter settings to the CPU module.
Station to execute test (station No. n)
Station to be tested (station No. n+1)
Set
Set
(3) Starting the station-to-station test
Set the STOP/RUN switch to the STOP position and reset the CPU with the
RESET/L. CLR switch.
Perform this operation on the station to be tested first, then on the station to
execute the test.
Center RESET
CPU
module
Center