Mitsubishi Electric MELSEC Q Series Reference Manual page 328

8 TROUBLESHOOTING
Error
code Error contents and cause
(SD0)
[SP. UNIT LAY ERR.]
• In the I/O Assignment tab of the PLC parameter
dialog box, "Intelligent" (intelligent function module) is
set for the slot where an I/O module is mounted, and
vice versa.
• In the I/O assignment setting of the PLC parameter,
switch setting was made to the module that has no
switch setting.
• In the I/O assignment setting of the PLC parameter
dialog box, the number of points assigned to the
intelligent function module is less than the number of
points of the mounted module.
[NET/10 mode]
• In the I/O Assignment tab of the PLC parameter
dialog box or the I/O assignment setting of the
2100 network parameter, "Intelligent" (intelligent function
module or special function module) is set for the slot
where an I/O module is mounted, and vice versa.
• In the I/O assignment setting of the PLC parameter,
switch setting was made to the module that has no
switch setting.
• In the I/O assignment setting of the PLC parameter
dialog box or the I/O assignment setting of the
network parameter, the number of points assigned to
the intelligent function module (special function
module) is less than the number of points of the
mounted module.
Collateral information
• Common Information (SD5 to SD15): Module No.
• Individual Information (SD16 to SD26): -
Diagnostic Timing
• At power-on/At reset
[SP.UNIT LAY ERR.]
The QI60 is mounted.
Collateral information
2103 • Common Information (SD5 to SD15): Module No.
• Individual Information (SD16 to SD26): -
Diagnostic Timing
• At power-on/At reset
[SP.UNIT LAY ERR.]
• Five or more Q series Ethernet modules are
mounted.
• 65 or more Q series CC-Link modules are mounted.
2106 Collateral information
• Common Information (SD5 to SD15): Module No.
• Individual Information (SD16 to SD26): -
Diagnostic Timing
• At power-on/At reset
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*2
*2
*2
Corrective action
• Set the I/O assignment again so that the
setting matches with the mounting status of
the intelligent function module or the remote
I/O module.
• Delete the switch setting in the I/O
assignment setting of the PLC parameter.
[NET/10 mode]
• Set the I/O assignment of the PLC
parameter or the I/O assignment of the
network parameter again so that the setting
matches with the mounting status of the
intelligent function module (special function
module) or the remote I/O module.
• Delete the switch setting in the I/O
assignment setting of the PLC parameter.
Remove the QI60.
• Reduce the number of the Q series
Ethernet modules to four or less.
• Reduce the number of the Q series CC-Link
modules to 64 or less.
MELSEC-Q
LED status,
Remote I/O
operation status
REM: Off
ERR: On
Remote I/O status:
Stop
REM: Off
ERR: On
Remote I/O status:
Stop
REM: Off
ERR: On
Remote I/O status:
Stop
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