Mitsubishi Electric MELSEC iQ-R Series - Data Logging Function Processing Time

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Appendix 7 Processing Time
Data logging function processing time
This section describes the processing time taken to store the data when executing the data logging function. (The values
shown in the tables below are the minimum time values that allow the CPU module to collect data without missing any data
while the continuous logging is executed.)
The following table lists the collection intervals at which data can be collected under the following conditions.
• Scan time = 1.5ms (up to 3ms)
*1
• Internal buffer capacity setting = 128K bytes per setting (default setting)
• Collection setting = Time specification (data collection at time interval)
• Data setting = Data register (D) (Data-type: word-signed (decimal number type))
• Output setting = Day/time column (output format is default) and index column are outputted.
• Save setting = file switching timing: 10000 records, operation when the number of saved files exceeded: overwriting
• Functions that require access to files in the SD memory card except for the data logging function must be not active.
• For the parameters, use the default setting values.
*1 3ms (to 4.5ms) for redundant mode
When the file format is Unicode text file
■When a global device or global label is specified
The following table lists the collection intervals at which data can be collected under the following conditions.
• Scan time = 1.5ms (up to 3ms)
*1
• Internal buffer capacity setting = 128K bytes per setting (default setting)
• Collection setting = Time specification (data collection at time interval)
• Data setting = Data register (D) (Data-type: word-signed (decimal number type))
• Output setting = Day/time column (output format is default) and index column are outputted.
• Save setting = file switching timing: 10000 records, operation when the number of saved files exceeded: overwriting
• Functions that require access to files in the SD memory card except for the data logging function must be not active.
• For the parameters, use the default setting values.
*1 3ms (to 4.5ms) for redundant mode
Number of points Collection interval at which data can be collected
NZ1MEM-2GBSD NZ1MEM-4/8/16GBSD
8 points (8 points  1 setting) 1.0ms 1.0ms
16 points (16 points  1 setting) 1.0ms 1.0ms
64 points (64 points  1 setting) 1.0ms 2.0ms
128 points (128 points  1 setting) 1.0ms 4.0ms
256 points (128 points  2 setting) 4.0ms 7.0ms
1280 points (128 points  10 setting) 18.0ms 20.0ms
Number of points Collection interval at which data can be collected
NZ1MEM-2GBSD NZ1MEM-4/8/16GBSD
8 points (8 points  1 setting) 1.0ms 1.0ms
16 points (16 points  1 setting) 1.0ms 2.0ms
64 points (64 points  1 setting) 2.0ms 5.0ms
128 points (128 points  1 setting) 4.0ms 7.0ms
256 points (128 points  2 setting) 7.0ms 13.0ms
1280 points (128 points  10 setting) 24.0ms 26.0ms