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MELSEC-Q
7 TROUBLESHOOTING
7.2.4 Checking the A/D conversion module status using GPPW system monitor
When the A/D conversion module detail information is selected in GPPW system
monitor, error codes and LED status can be checked.
(1) Operating GPPW
[Diagnostics] [System monitor] "Select A/D conversion module"
Module Detailed Information
(2) Checking the error codes using Module's detailed information
The error code stored in memory address 19 (Un\G19) of the A/D conversion
module buffer is displayed in the latest error code field shown in the figure below.
(When the Error History
button is pressed, the contents displayed in the latest
error code field are displayed in the No. 1 field.)
(3) Checking the LED status using H/W information
The LED status is displayed in the mounting field under the H/W LED
information.
No. LED name Status
1 RUN LED 0000
H
: Indicates that LED is unlit.
2 ERROR LED 0001
H
: Indicates that LED is lit
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