DL7, DL7L
83
!
If the frequency of saving records in the data archive is less than or equal
to 1 min, then in the first record of the data archive after device reset, the
---W--- symbol will be saved for all channels.
Totalizers records are saved every 1 min, 5 min, 10 min, 15 min, 30 min, 1 h, 2 h, 4 h,
12 h, 24 h, according to the settings. (More information in section
).
Record in event archive is added when the event occurs (e.g. power on/off, alarm
exceeded, device parameters changed, user login).
13.6 Archive files organization
Each archive file contains a header, with the following information:
DEVICE MODEL, FW VERSION, SERIAL NUMBER, ID, NUMBER OF ROW, ARCHIVE
TYPE, CRC1
DEVICE MODEL
– device model, for DL7 it is DL7
FW VERSION
– the firmware version in which the archive was created, updating
the FW will always result in the creation of a new archive
SERIAL NUMBER
– serial number of the device
ID
– device ID
NUMBER OF ROW
– information about the number of rows in the header
ARCHIVE TYPE
– archive type: DATA (process value archive), EVENT (event
archive), TOT (totalizer archive)
CRC1
– CRC control
The process values archive and totalizers archive also has an additional archive header,
which contains information about set parameters (selected channels, description, unit, etc.).
13.6.1 Data archive
Organization of additional header in the data archive file:
CHANNEL, DESCRIPTION, UNIT, INPUT TYPE, INPUT NO, TREND MIN, TREND MAX
CHANNEL
– the channel number
DESCRIPTION
– channel description, depending on the settings in the device
UNIT
– unit assigned to the channel
INPUT TYPE
– the type of measurement input assigned to the channel:
ME (measured), CO (computed), RE (Modbus TCP),
DE (Demo(TEST)), -- (disabled).
INPUT NO
– for
Measurement
channel type: number of the assigned
measurement input: XY (X - module number, Y number of input on
the module); for
Modbus TCP
channel type: number of registers
(1
..
100); for
Computed
,
Demo(TEST)
and
Disabled
channel type:
--
TREND MIN
– the minimum value of the OY axis on the trend in the single result
window and during the data archive viewing
TREND MAX
– the maximum value of the OY axis on the trend in the single result
window and during the data archive viewing