User`s manual

Error code list Troubleshooting
MELSEC System Q, Hardware 11 – 41
2106
SP. UNIT LAY ERR.
– Two or more MELSECNET/H modules are
mounted.
– Two or more CC-Link IE controller network
modules are mounted.
– Two or more Ethernet modules are mounted.
 Collateral information

Common Information: Module No.
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Reduce the number of MELSECNET/H mod-
ules to one.
– Reduce the number of CC-Link IE controller
network modules to one.
– Reduce the number of Ethernet modules to
one.
OFF Flicker Stop Q00UJ
SP. UNIT LAY ERR.
– Five or more MELSECNET/H and CC-Link IE
controller network modules in total are
mounted in the entire system.
– Two or more MELSECNET/H modules are
mounted in the entire system.
– Two or more CC-Link IE controller network
modules are mounted in the entire system.
– Two or more Ethernet modules are mounted
in the entire system.
 Collateral information

Common Information: Module No.
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Reduce the number of MELSECNET/H and
CCLink IE controller network modules to four
or less in total in the entire system.
– Reduce the number of MELSECNET/H mod-
ules to one in the entire system.
– Reduce the number of CC-Link IE controller
network modules to one in the entire system.
– Reduce the number of Ethernet modules to
one in the entire system.
OFF Flicker Stop Q00U/Q01U
SP. UNIT LAY ERR.
– Three or more MELSECNET/H and CC-Link IE
controller network modules in total are
mounted in the entire system.
– Three or more Ethernet interface modules are
mounted in the entire system.
 Collateral information

Common Information: Module No.
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Reduce the MELSECNET/H and CC-Link IE
controller network modules up to two or less
in the entire system.
– Reduce the Ethernet interface modules up to
two or less in the entire system.
OFF Flicker Stop Q02U
SP. UNIT LAY ERR.
– Five or more MELSECNET/H and CC-Link IE
controller network modules in total are
mounted in the entire system.
– Five or more Ethernet interface modules are
mounted in the entire system.
 Collateral information

Common Information: Module No.
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Reduce the MELSECNET/H and CC-Link IE
controller network modules up to four or less
in the entire system.
– Reduce the Ethernet interface modules up to
four or less in the entire system.
OFF Flicker Stop QnU (except
Q00UJ-, Q00U-,
Q01U and,
Q02UCPU)
SP. UNIT LAY ERR.
– Three or more CC-Link IE controller network
modules are mounted in the entire system.
– Five or more MELSECNET/H and CC-Link IE
controller network modules in total are
mounted in the entire system.
 Collateral information

Common Information: Module No.
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Reduce the CC-Link IE controller network
modules up to two or less in the entire sys-
tem.
– Reduce the total number of the MELSECNET/
H and CC-Link IE controller network modules
up to four or less in the entire system.
OFF Flicker Stop Qn(H) (first 5
digits of serial
No. is 10042 or
later)
QnPH (first 5
digits of serial
No. is 10042 or
later)
QnPRH (first 5
digits of serial
No. is 10042 or
later)
SP. UNIT LAY ERR.
– Five or more MELSECNET/H modules have
been installed.
– Five or more Ethernet interface modules have
been installed.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Reduce the number of MELSECNET/H mod-
ules to four or less.
– Reduce the number of Ethernet modules to
four or less.
OFF Flicker Stop Qn(H)
QnPH
QnPRH
Error
code
Error contents and cause Corrective action
LED status
CPU
status
Corre-
sponding
CPU
RUN ERR.
Tab. 11-4: Error code list (2000 to 2999) for PLC CPUs of MELSEC System Q