H/W Test - Mitsubishi Electric SW0DNC-MNETH-B User Manual

6 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION

6.5.3 H/W test

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This test checks the internal hardware on the MELSECNET/H board.
(1) Connect the optical fiber cables to the IN and OUT sides of the Q80BD-J71LP21-
25, Q81BD-J71LP21-25, Q80BD-J71LP21S-25, Q80BD-J71LP21G and Q80BD-
J71LP21GE (for the optical loop system).
In the case of the Q80BD-J71BR11 (for the coaxial bus system), do not connect
a Type F connector or any terminal resistors.
(2) Set the "H/W test" in the mode settings in the "Board Information" screen of the
MNETH utility.
(3) Click the Board Set button in the "Board Information" screen in the MNETH
utility to run the H/W test, and check the execution state by the status of the
LED's in the "Board Information" screen.
T. PASS blinks during the test.
If T. PASS blinks 20 times and ERROR LED does not blink, the test is completed
normally.
Also, if the test ends abnormally, the ERROR LED will blink as shown below to
indicate the relevant error information.
(a) Both the optical loop system (Q80BD-J71LP21-25, Q81BD-J71LP21-25,
Q80BD-J71LP21S-25, Q80BD-J71LP21G, Q80BD-J71LP21GE) and the
coaxial bus system (Q80BD-J71BR11) in common
If the following LED's light up, it means that the corresponding error has
occurred, so replace the MELSECNET/H board.
1. "CRC" LED lights up ·······ROM Check Error
2. "OVER" LED lights up ······RAM Check Error
3. "AB.IF" LED lights up ·······Timer, interrupt function check error
(b) Optical loop system (Q80BD-J71LP21-25, Q81BD-J71LP21-25, Q80BD-
J71LP21S-25, Q80BD-J71LP21G, Q80BD-J71LP21GE) only
1. "TIME" LED lights up ·······Forward loop broken line check error
2. "DATA" LED lights up ······Reverse loop broken line check error
(4) Corrective action when the test completes abnormally
Replace the MELSECNET/H board
MELSEC
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