Mitsubishi Electric MELSEC Q Series User Manual page 421

Error Error
Error message
code information
7020 MULTI CPU ERROR
Module No.
7036 CPU LAY ERROR
Module No.
*1 : The error information (module No.) in "Event information" in the <<Event history>> tab of Setting/monitoring tools for the C Controller
module is displayed as follows:
"Error information: XX - YYY"
XX (DEC.): Slot No. (0 to 63), CPU No. (1 to 4)
YYY (HEX.): Start I/O No. 16 (000 to 0FF, 3E0 to 3E3)
The CPU operation status for error detection can be changed to "Continue" in "Operation mode at the time of error" in Project view 
*2 :
"Parameter"  "CCPU Parameter"  <<RAS settings>> in Setting/monitoring tools for the C Controller module.
Either of "Stop" or "Continue" can be set for each module >> in "Detailed Setting"  "CPU Operation Mode at H/W Error" through
*3 :
Project view"  "Parameter"  "CCPU Parameter"  <<I/O assignment settings>>
*4 : For the parameter setting location for each parameter number, refer to the following.
 Page 296, Section 15.3
*5 : Not supported by Q24DHCCPU-LS and Q26DHCCPU-LS.
LED status CPU
operation
RUN ERR.
status
*1
On On Stop
*1
Off Flashing Stop
Error details and cause
In the operating mode of the multiple CPU
system, an error occurred in the CPU for
which "All station stop by stop error of CPU"
is not selected. (A normal CPU module
detects this error.)
The number of connected CPU set in the
multiple CPU setting does not match the
number of connected CPU that is decided
according to fixing point of CPU module.
APPENDICES
Corrective action
Identify the error of the CPU module, and
eliminate the error.
• Mount the CPU module in the correct
slot.
• Change the host CPU No. set in the
multiple CPU setting to the one
determined by the mounting position of
the CPU module.
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