298
(3) Storing module errors
The module errors can be stored either in the system memory
*1
or the standard RAM.
The errors are stored separately from error history (CPU module) data.
*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.
*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.
CPU module System memory Standard RAM
Q00UJCPU 40 (Fixed) -
Q00UCPU, Q01UCPU 40 (Fixed) 1000
Q02UCPU, QnUD(H)CPU, Built-in Ethernet port QCPU 100 (Fixed) 1000
Item Description Setting range Default
Corresponding
Memory
Select a storage location.
• System Memory
• Standard RAM
*1, *2
System Memory
History No.
Set the number of collected errors only when the errors are
stored in the standard RAM.
32 to 1000 40/100
Collection No.
Set the number of collected errors in one scan.
*3
• Stored in system memory: 1 to 100
• Stored in standard RAM: 1 to 128
1
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