APPX
Appendix 9 Processing Time
913
A
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.)
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: 1024K bytes (when the data storage destination memory is the function memory) or
10000 records (when the data storage destination memory is the SD memory card), operation when the number of saved
files exceeded: overwriting
• When the data storage destination memory is the SD memory card, functions that require access to files in the SD memory
card except for the data logging function are not active.
• The default setting value is used for the file transfer server setting of the CPU Module Logging Configuration Tool (however,
the IP address, login user name, and password can be customized).
• Parameters are used only for required settings that can be connected to the FTP server (IP address settings of the module
parameter only) and default setting values are used for other settings.
*1 3ms (to 4.5ms) for the Process CPU (redundant mode)
Number of points File transfer Collection interval at which data can be collected
When the
function
memory is
used
When the SD memory card is used
NZ1MEM-2GBSD NZ1MEM-4/8/16GBSD
Programmable
controller CPU
Process CPU,
Safety CPU
Programmable
controller CPU
Process CPU,
Safety CPU
8
points
(8 points 1
setting)
Not performed 1.0ms 1.0ms 1.0ms 1.0ms
Performed No file deletion
specification at
transfer
completion
1.0ms 1.0ms
File deletion
specification at
transfer
completion
1.0ms 1.0ms 1.0ms
16
points
(16 points 1
setting)
Not performed 1.0ms 1.0ms 1.0ms 2.0ms
Performed No file deletion
specification at
transfer
completion
1.0ms 1.0ms
File deletion
specification at
transfer
completion
1.0ms 1.0ms 1.0ms
64
points
(64 points 1
setting)
Not performed 1.0ms 2.0ms 2.0ms 5.0ms
Performed No file deletion
specification at
transfer
completion
1.0ms 2.0ms
File deletion
specification at
transfer
completion
1.0ms 1.0ms 3.0ms
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