Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 300

(3) Storing module errors
The module errors can be stored either in the system memory
The errors are stored separately from error history (CPU module) data.
CPU module
Q00UJCPU
Q00UCPU, Q01UCPU
Q02UCPU, QnUD(H)CPU, Built-in Ethernet port QCPU
*1 The memory is managed inside the system.
(4) Setting method
Select "Collect error histories of intelligent function modules" in "Module Error History Collection (Intelligent
Function Module)" in the PLC RAS tab of the PLC parameter dialog box.
Item
Corresponding
Select a storage location.
Memory
Set the number of collected errors only when the errors are
History No.
stored in the standard RAM.
Collection No.
Set the number of collected errors in one scan.
*1 With CPU modules other than the High-speed Universal model QCPU and Universal model Process CPU, if a sampling
trace file is stored in the standard RAM, the file will be deleted when the CPU module is powered off and then on or is
reset. However, with the High-speed Universal model QCPU and Universal model Process CPU, the file will not be
deleted.
*2 The battery consumption may be increased.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
*3 If collected module errors are frequently lost, set a greater value to "Collection No.". The recommended value is the
number of intelligent function modules that support this function.
Parameter settings are enabled to the CPU module when:
• the CPU module is powered off and then on or
• the CPU module is reset.
298
Description
*3
*1
or the standard RAM.
System memory
40 (Fixed)
40 (Fixed)
100 (Fixed)
Setting range
• System Memory
*1, *2
• Standard RAM
32 to 1000
• Stored in system memory: 1 to 100
• Stored in standard RAM: 1 to 128
Standard RAM
-
1000
1000
Default
System Memory
40/100
1