Yokogawa PC-Based MX100 - Manual (Page 23)

1-14 IM MX100-01E
Log File Storage
In addition to the measured data that is saved when the communication with the PC is
disconnected, a log file of information related to the CF card operation and information of
power ON/OFF is saved to the CF card in text format (MX100MLG.TXT). The maximum
size of the log file is 40 KB. Up to 1021 events can be stored. When 1021 events are
exceeded, the event is deleted in order from the oldest information. The log is written
(overwritten to the same file name) to the CF card when you press the access stop
switch (see “Ejecting the CF Card” in section 2.8).
Information Saved to the Log File
• Date/Time when the power is turn ON or OFF.
• Date/Time when the CF card is inserted or ejected.
• Save mode when data is saved (backup) and the start/stop log.
• The file creation and deletion log.
• Media-related errors.
• The CF card formatting log.
Log File Example
Yokogawa DAQMASTER MX100 <Media Info>
Date Time Status Message
70/01/01 00:00:00 Power off
03/01/01 00:00:01 Power on
03/03/25 10:12:13 Format ok
03/03/25 11:14:12 Backup start
03/03/25 11:14:12 Mode rotary
03/03/25 11:14:13 Delete (--)
03/03/25 11:14:21 Create 32500000
03/03/25 11:14:36 Code 12 MF
03/03/25 11:14:36 Error P3
03/03/25 11:14:54 Backup stop
03/03/25 11:15:18 Create MX100MLG
03/03/25 11:15:22 Card out
03/03/25 11:15:25 Card in
>>
Time indicating that the settings
have been initialized*
Most-recent information
Media error (records the error code)
Termination mark
Time after resetting the internal clock*
* When the MX100 is initialized, the date/time on the MX100 is reset to 1970/01/01 00:00:00
once, then to the default value on the MX100 (2003/01/01 00:00:00). Then, when the PC
software is started and connection to the MX100 is made, the current date/time on the PC is
transmitted to the MX100. The MX100 is reset to the received date/time.
CF Card Specifications
Item Specification
Capacity 2 GB maximum
Type Type I or Type II
Format Supports quick (logical) format. 1 partition format (hard disk format) is possible
only through a command from the PC when the MX operation mode is idle.
File system FAT or FAT16
1.2 Main Module Functions