Mitsubishi QJ71LP21 User Manual

8 TROUBLESHOOTING
MELSEC-Q
8 - 50 8 - 50
*1
: Characters in parentheses ( ) indicate the special register numbers where individual information is being
stored.
Error
Code
(SD0)
*1
Error Contents and Cause Corrective Action
Corresponding
CPU
1300
There is an output module with a
blown fuse.
• Check ERR. LED of the output
modules and replace the fuse of the
module whose LED is lit.
• Read the common information of the
error using the peripheral device and
replace the fuse at the output module
corresponding to the numerical value
(module No.) reading.
Alternatively, monitor special
registers SD1300 to SD1331 with
the peripheral device and change
the fuse of the output module whose
bit has a value of "1".
• When a GOT is bus-connected to
the main base unit or extension
base unit, check the connection
status of the extension cable and the
grounding status of the GOT.
QnA
Q4AR
• There is an output module with a
blown fuse.
• External power supply for output
load is turned off or disconnected.
• Check ERR. LED of the output
modules and replace the module
whose LED is lit.
• Read the common information of the
error using the peripheral device and
replace the fuse at the output module
corresponding to the numerical value
(module No.) reading.
Alternatively, monitor special
registers SD1300 to SD1331 with
the peripheral device and change
the fuse of the output module whose
bit has a value of "1".
• Check whether the external power
supply for output load is ON or OFF.
• When a GOT is bus-connected to
the main base unit or extension
base unit, check the connection
status of the extension cable and the
earth status of the GOT.
Q2AS

Mitsubishi QJ71LP21 Specifications

General

Brand	Mitsubishi
Model	QJ71LP21
Category	Controller
Language	English