Overview of Logging function

The logging function is used to record arbitrary contacts and data information together with time stamp information at any time, and save them in an SD card inserted in the CPU unit.
Log data is saved in CSV format.
Use Data recording under Project > PLC in the project navigator to set the conditions for the data recording.
The settings are downloaded to the PLC as part of the project data and stored in the ROM1. The download of settings can be done via SD card.
The data recording operation can be executed by the following operations:
- Selecting the Start button in the Data recording window
- Using the FP_LOGTRACE_START instruction
- Setting the configuration to Start when changing to RUN mode starts data recording operation automatically
To perform data logging at high speed, the buffer memory in the CPU unit is used.

Specifications

Item	Specifications
	FP7	FP0H	FP-XH
Max. number of records	1,000,000 records	60000 records	40000 records
Max. number of generated files per log folder	2000	2000	1500
Max. number of variables	Max. 500 variables (500–2000 words) / 1 record	Max. 182 variables (182–2000 words) / 1 record	Max. 182 variables (182–1500 words) / 1 record
Buffer memory Shared with the trace function.	Can be divided into max. 16 (LOG0–LOG15) areas for use.	Can be divided into max. 4(LOG0–LOG3) areas for use.
Logging trigger condition	Bit device ON: Logging is executed when the condition is met at the end of a scan. Interval: Hour, minute, second Time: Per minute, Per hour, Every day, Every week, Every month, Every year Instruction (FP_LOGTRACE_SAMPLE) : Executes an instruction with an arbitrary condition and starts logging.
File completion condition (Logging stop trigger condition)	Bit device ON: Use it together with the DF instruction to turn ON only for one scan. Time: Per minute, Per hour, Every day, Every week, Every month, Every year Max. number of records
File format	Data is saved in CSV format. Arbitrary comments can be given. The upper limit of the capacity on the file system is 4 GB.

Image of logging function