Chapter 3 Specifications; Function Specifications - Mitsubishi Electric MELSEC-L Series User Manual

CHAPTER 3
This chapter describes the specifications of the data logging function.
3.1

Function Specifications

The following shows the specifications of the data logging function.
Number of data logging settings
Data storage location
Logging type
Sampling interval
Data sampling
No. of data sampling points
AND conjunction
Data processing Trigger logging
File Name
File format
File output
Data type
Data output format (CSV file)
30
SPECIFICATIONS
Item
Trigger condition
AND conjunction
Trigger logging range
Number of triggers
Number of trigger logging
records
Specification
10
Standard ROM (configuration files only), SD memory
card
• Continuous logging
• Trigger logging
• Each scanning cycle
• Time specification
• Condition specification (Device specification, Step No.
specification)
Up to 1280 (128 points per setting)
In the Sampling interval setting, Device and Step No.
under "Condition specification" can be specified in
combination (AND conjunction).
• Condition specification (Device change specification,
Step No. specification)
• When trigger instruction executed
• When data logging trigger activated
In the Trigger setting, Device data change and Step No.
under "Condition specification" can be specified in
combination (AND conjunction).
Data of the specified number of records are logged
before and after a trigger.
1
Up to 1000000
Up to 48 one-byte characters can be used for the
following.
• File number (serial number)
• Character string (name)
• Date and time
CSV file
• Bit
• Word (unsigned)
• Word (signed)
• Double word (unsigned)
• Double word (signed)
• FLOAT [single precision]
• FLOAT [double precision]
• Character string: 1 to 256 characters
• Numeric string: 1 to 256 bytes
• Decimal format
• Hexadecimal format
• Exponential format
Reference
Page 49, CHAPTER 6
Page 56, Section 6.3.1,
Page 57, Section 6.3.2
Page 51, Section 6.2
Page 56, Section 6.3.1,
Page 57, Section 6.3.2
Page 57, Section 6.3.2,
Page 59, Section 6.3.3
Page 33, Section 3.3
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