User`s manual

Error code list Troubleshooting
MELSEC System Q, Hardware 11 – 39
2100
SP. UNIT LAY ERR.
The slot to which the QI60 is mounted is set to
other than Inteli (intelligent function module) or
Interrupt (interrupt module) in the I/O assign-
ment of PLC parameter.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Make setting again to match the PLC parameter
I/O assignment with the actual loading status.
OFF Flicker Stop Qn(H)
(Function
version is B or
later)
QnPH
QnPRH
SP. UNIT LAY ERR.
Wrong I/O assignment setting of PLC parameter:
– In the I/O assignment setting of PLC parame-
ter, Inteli (intelligent function module) was
allocated to an I/O module or vice versa.
– In the I/O assignment setting of PLC parame-
ter, a module other than CPU (or nothing) was
allocated to the location of a CPU module or
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.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Make the PLC parameter’s I/O assignment
setting again so it is consistent with the actual
status of the intelligent function module and
the CPU module.
– Delete the switch setting in the I/O assign-
ment setting of the PLC parameter.
Qn(H)
QnPH
QnPRH
QnU
SP. UNIT LAY ERR.
Wrong I/O assignment setting of PLC parameter:
– In the I/O assignment setting of PLC parame-
ter, Inteli (intelligent function module) was
allocated to an I/O module or vice versa.
– In the I/O assignment setting of PLC parame-
ter, a module other than CPU (or nothing) was
allocated to the location of a CPU module or
vice versa.
– 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.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Reset the parameter I/O allocation setting to con-
form to the actual status of the intelligent func-
tion module and the CPU module.
Q00J/Q00/Q01
2101
SP. UNIT LAY ERR.
13 or more A-series special function modules
(except for the A1SI61) that can initiate an inter-
rupt to the CPU module have been installed.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Reduce the A series special function modules
(except the A1SI61) that can make an interrupt
start to the CPU module to 12 or less.
OFF Flicker Stop Qn(H)
2102
SP. UNIT LAY ERR.
Seven or more A1SD51S have been installed.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Keep the number of A1SD51S to six or fewer.
OFF Flicker Stop Qn(H)
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