Mitsubishi MELSEC Q Series Programming Manual page 943

Error
Error Contents and Cause
Code
[UNIT BAD CONNECT]
• The I/O module status is different from that
obtained at power-on.
• The I/O module (including the intelligent function
module) is nearly disconnected or is completely
2040
disconnected during running.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information:-
■Diagnostic Timing
• Always
[SP. UNIT LAY ERR.]
The slot where the QI60 is mounted was assigned
as other than an intelligent function module or
interrupt module in the I/O assignment tab of the
PLC parameter dialog box.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information:-
■Diagnostic Timing
• At power-on/At reset
[SP. UNIT LAY ERR.]
• The I/O module was assigned as an intelligent
function module in the I/O assignment tab of the
PLC parameter dialog box. Or vice versa.
• In the I/O assignment setting of PLC parameter,
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
2100
module.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information:-
■Diagnostic Timing
• At power-on/At reset
[SP. UNIT LAY ERR.]
• In the I/O assignment tab of the PLC parameter
dialog box, the I/O module was assigned to the
slot for an intelligent function module. Or vice
versa.
• In the parameter I/O allocation settings, a
module other than CPU (or nothing) was
allocated to a location reserved for 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
Corrective Action
• Read common information of the error using
the programming tool to identify the numeric
value (module No.). Check the module
corresponding to the value and replace it as
necessary.
• Monitor SD1400 to SD1431 using the
programming tool to identify the module of
which data bit is "1". Check the module and
replace it as necessary.
• Reset the CPU module and run it again. If the
same error code is displayed again, the cause
is a hardware failure of the CPU module, I/O
module, intelligent function module, or END
cover. (Please consult your local Mitsubishi
representative, explaining a detailed
description of the problem.)
Make setting again to match the PLC parameter I/
O assignment with the actual loading status.
• 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 assignment
setting of the PLC parameter.
Reset the parameter I/O allocation setting to
conform to the actual status of the intelligent
function module and the CPU module.
LED Status Corresponding
CPU Status CPU
LCPU
*8
Qn(H)
QnPH
QnPRH
RUN:
Off
ERR.:
Flicker
CPU Status:
Qn(H)
Stop
QnPH
QnPRH
QnU
Q00J/Q00/Q01
12-23
1
2
3
12
6
6
7
8