Mitsubishi QJ71LP21 Reference Manual page 281

8 TROUBLESHOOTING
Error
Code Error Contents and Cause
*1
(SD0)
• 5 or more MELSECNET/H modules
have been installed in a whole
multiple CPU system.
• 5 or more Q series Ethernet
interface modules have been
installed in a whole multiple CPU
system.
• 5 or more MELSECNET/H modules
have been installed.
• 5 or more Q series Ethernet
interface modules have been
installed.
• The same network numbers or
station numbers exist, in the
MELSECNET/10 network system.
• 2 or more MELSECNET/H modules
were installed.
• 2 or more Q series Ethernet
modules were installed.
2106 • 3 or more Q series CC-Link modules
were installed.
• The same network number or same
station number is duplicated in the
MELSECNET/H network system.
• 5 or more AJ71QLP21 &
AJ71QBR11 modules are installed.
• 3 or more AJ71AP21/R21 &
AJ71AT21B modules are installed.
• The total number of installed
AJ71QLP21, AJ71QBR11,
AJ71AP21/R21, and AJ71AT21B
modules exceeds 5.
• The same network numbers or
identical station numbers exist in the
MELSECNET/10 network system.
• 2 or more master or load stations
exist simultaneously at the
MELSECNET(II) or MELSECNET/B
data link system.
*1 : Characters in parentheses ( ) indicate the special register numbers where individual information is being
stored.
*12 : This applies to the CPU module of function version B or later.
8 - 70
Corrective Action
• Reduce the number of
MELSECNET/H modules to 4 or
less in the whole multiple CPU
system.
• Reduce the number of Q series
Ethernet modules to 4 or less in the
whole multiple CPU system.
• Reduce the number of
MELSECNET/H modules to 4 or
less.
• Reduce the number of Q series
Ethernet modules to 4 or less.
• Check the network numbers and
station numbers.
• Reduce the MELSECNET/H
modules to one or less.
• Reduce the Q series Ethernet
modules to one or less.
• Reduce the Q series CC-Link
modules to two or less.
• Check the network number and
station number.
• Reduce the AJ71QLP21 and
AJ71QBR11 modules to 4 or less.
• Reduce the AJ71AP21/R21 and
AJ71AT21B modules to 2 or less.
• Reduce the AJ71QLP21,
AJ71QBR11, AJ71AP21/R21 and
AJ71AT21B modules to a total of 4
or less.
• Check the network Nos. and station
Nos.
• Check the station Nos.
MELSEC-Q
Corresponding
CPU
*12
Qn(H)
QnPH
Qn(H)
QnPH
QnPRH
Rem
Q00J/Q00/Q01
QnA
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