SM500F
Field mountable paperless recorder
6 Archiving
IM/SM500F Rev. Z
53
6.2 Sample Rates
Data is saved to the archive file at the same rate as it is saved to internal memory, i.e. at either the Group's
primary or secondary recording sample rate.
6.3 Archive File Types
Archive files are created in one of two user-selectable formats:
Text (comma separated values [.csv]) – see Section 6.4, page 54
or
Secure binary encoded – see Section 6.5, page 59
All archive files created by the recorder are given filenames automatically but each type of archived file is
given a different file extension depending on whether Text or Binary format has been selected during archive
configuration – see Section 7.7.4, page 90. File types and extensions for Text files are shown in Table 6.1.
File types and extensions for Binary files are shown in Table 6.2.
Fig. 6.1 Archiving Sample Rates
Type
Extension
Contents
Channel data files
*.D**
Analog or digital recording channels in the current process group.
Alarm event log files
*.E**
The historical record of the alarm events related to the group's
channels plus the history of any operator messages.
Totalizer log files
*.T**
The historical record of all totalizer and associated statistical values
relating to the group's recording channels.
Audit log files
*.A**
The historical entries from the audit log.
(Note. The content of this file is the same for all groups).
Digital signature files
*.S**
Digital signature file for the corresponding channel data file.
Table 6.1 Text Format File Types and Extensions
1.1
1.2
1.3
1.4
Archive
Channel
Data
Recording Channels
Group Sample Rate
Secondary
rate
Primary
rate
Archive rate is always same as channel sample
rate. Archive channel data is a direct copy of
channel data on internal memory
Archive Media
Internal Memory
1.5
1.6
