Target Data - Mitsubishi Electric MELSEC iQ-R Series User Manual

Target data

Target data indicates the data used for logging that saves the content of device memory in a CPU module to an SD memory
card along with time stamps and for trigger condition judgment.
Target data for data logging
The following data can be logged by data logging.
• Device memory in a control CPU
• Device memory in a CPU on another station in a multiple CPU configuration
• Device memory in a CPU on another station via a network
For details, refer to the following:
MELSEC iQ-R High Speed Data Logger Module User's Manual (Startup)
Data type
Target data for data logging can be logged as the data types shown in the following table.
Data type
Bit
Word [Signed]
Double Word [Signed]
Word [Unsigned]/Bit String [16-bit]
Double Word [Unsigned]/Bit String [32-bit]
FLOAT [Single Precision]
FLOAT [Double Precision]
16bit BCD
32bit BCD
String
*3
Raw
*1 If the size is in odd number, the device point will be rounded up by adding 1 point.
*2 For double word device, the device becomes 2 points for each 4 bytes. The fraction should be rounded up to 2 points.
(Assign 2 points if size is 4 and 4 points if size is 5)
*3 A hexadecimal representation is converted to a string by byte unit, and it is output with a space removed.
(For start device D0, D0: 0x8A6B, D1: 0x41C2 4-byte raw type, 6B8AC241 is output.)
■String type data
Data is output in the following character codes depending on the file format to be output.

Unicode text files, binary files, report files: UTF-16 (little endian)
CSV files: ASCII
The considerations when logging string type data are as follows.
• Data character code of saved folder name settings, saved file name settings, and E-mail content settings is in ASCII format
regardless of the format in which the file is to be output.
• To specify the size (byte unit), consider the size required for the character code.
• To create character string data in a CPU module, use the instruction ($MOV or $MOV_WS) which supports character code.
• If the data with a different character code is output to the same file, some characters may be replaced with period (.) or may
be corrupted.
Number of target data settings
Up to 1024 target data can be set for one "Data logging setting".
1 FUNCTION
24
1.1 Data Logging Function
Number of device points
1 point
1 point
2 points
1 point
2 points
2 points
4 points
1 point
2 points
*1*2
(Specified size  2) points
*1*2
(Specified size  2) points