14 - 16 14 - 16
MELSEC
14 TROUBLESHOOTING
14.4.2 Flowchart to use when SD/RD LED does not turn on
The board information screen of MNETH utility displays SD and RD LED status. This
function is the same as the MELSECNET/H board's LED messages.
YES
NO
NO
NO
NO
NO
NO
YES
YES
NO
NO
YES
YES
YES
YES
YES
An error occurs.
Is the L.ERR LED lit?
Go to Section 14.4.3.
Is the
control station
parameter
OK?
Check the control station
parameter.
Does the
"SD" LED remain
unlit?
Does the
"RD" LED remain
unlit?
Normal
Turn on/off the B, X and Y
assigned to the host via
PC.
Turn on/off the B, X and Y
used by PC at other
stations.
Monitor B, X and Y at
other stations.
Monitor B, X and Y via PC.
Does the B,
X and Y turn on/off at
other stations?
Replace the PC MELSECNET
/H board.
Does the B,
X and Y turn on/off
at PC?
Check the monitor
condition or user program.
Are the
monitor condition
and user program
normal?
Replace the MELSECNET/H
board since the "SD" and
"RD" LEDs are broken.
Did the SD/RD
turn on?
Consult with the dealer
regarding the problem.
Complete
Содержание Q80BD-J71BR11
Страница 2: ......
Страница 24: ...A 22 A 22 MEMO ...
Страница 50: ...4 6 4 6 MELSEC 4 FUNCTION MEMO ...
Страница 92: ...6 36 6 36 MELSEC 6 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION MEMO ...
Страница 132: ...10 2 10 2 MELSEC 10 MELSEC DATA LINK LIBRARY MEMO 10 ...
Страница 138: ...11 6 11 6 MELSEC 11 PROGRAMMING MEMO ...
Страница 164: ...12 26 12 26 MELSEC 12 APPLICATION FUNCTIONS MEMO ...
Страница 166: ...13 2 13 2 MELSEC 13 ERROR CODE MEMO 13 ...
Страница 223: ......