User`s manual

Troubleshooting Error code list
11 – 40
2103
SP. UNIT LAY ERR.
– Two or more QI60/A1SD51S modules are
mounted in a single CPU system.
– Two or more QI60/A1SD51S modules are set
to the same control CPU in a multiple CPU
system.
– Two or more A1SD51S modules are loaded in
a multiple CPU system.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Reduce the number of QI60/A1SD51S mod-
ules mounted in the single CPU system to
one.
– Change the number of QI60/A1SD51S mod-
ules set to the same control CPU to only one
in the multiple CPU system.
– Reduce the number of A1SD51S modules to
only one in the multiple CPU system. When
using an interrupt module with each QCPU in
a multiple CPU system, replace it with the
QI60. (Use one A1SI61 module + max. three
QI60 modules or only the QI60 modules.)
OFF Flicker Stop Qn(H)
(Function
version is B or
later)
QnPH
SP. UNIT LAY ERR.
Two or more QI60, A1SD51S interrupt modules
have been mounted.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Install only one QI60, A1SD51S module.
Qn(H)
QnPRH
SP. UNIT LAY ERR.
Two or more QI60 modules are mounted.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Install only one QI60 module.
Q00J/Q00/Q01
(first 5 digits of
serial No. is
04101 or later)
SP. UNIT LAY ERR.
Two or more QI60 modules where interrupt
pointer setting has not been made are mounted.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Install only one QI60 module.
– Make interrupt pointer setting to the second
QI60 module and later.
Q00J/Q00/Q01
(Function
version is B or
later)
QnU
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