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CHAPTER6 FUNCTIONS
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6.32 Module error collection
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(4) Storing module errors
The module errors can be stored either 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.
(5) 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: When a sampling trace file is stored to the standard RAM, powering off and then on or resetting the CPU module will delete the file.
*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.
Table6.61 Storage locations and the number of storable module errors
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
Figure 6.126 PLC RAS
Table6.62 PLC RAS setting list
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
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