Instruction Manual

i.LON 100 Internet Server Programmer’s Reference 6-7

Property Description

The index number assigned to the Data Logger must be in the range of 0-32,767.

As mentioned earlier, you can use the DataLoggerSet function to create a new

Data Logger, or to modify an existing Data Logger. If you do not specify an index

number in the <Data> parameter you supply to DataLoggerSet, the function will

create a new Data Logger using the first available index number.

If you specify an index number that is already being used, the function will

overwrite the configuration of the Data Logger using that index number with the

settings defined in the <Data> parameter.

A timestamp indicating the last time the configuration of the Data Logger was

updated. This timestamp uses the following format:

YYYY-MM-DDTHH:MM:SSZ

The first segment of the time stamp (YYYY-MM-DD) represents the date the

configuration of the Data Logger was last updated. The second segment

(THH:MM:SS) represents the time of day the configuration of the Data Logger

was last updated, in UTC (Coordinated Universal Time).

UTC is the current term for what was commonly referred to as Greenwich

Meridian Time (GMT). Zero (0) hours UTC is midnight in Greenwich England,

which lies on the zero longitudinal meridian. Universal time is based on a 24

hour clock, therefore, an afternoon hour such as 4 pm UTC would expressed as

16:00 UTC. The Z appended to the timestamp indicates that it is in UTC.

For example, 2002-08-15T10:13:13Z indicates a UTC time of 10:13:13 AM on

August 15, 2002.

The functional block name assigned to the Data Logger in LONMAKER. You can

write to this property, but each time you use the i.LON 100 Configuration

Software to view the Data Logger, it will be reset to match the functional block

name defined in L

ONMAKER.

A user-defined description of the Data Logger. This can be a maximum of 228

characters long.

Either LT_HISTORICAL or LT_CIRCULAR. This indicates whether the log is a

historical or circular. A historical data log stops recording data point updates

when it is full. A circular data log removes older values when the log is full and it

receives new updates.

The amount of memory allocated to the log file, in kilobytes. Enter an integer

value here.

Please note that the total size of the log files for all Data Loggers (and Alarm

Notifiers) on the i.LON 100 can not exceed the size of the flash memory stored in

the i.LON 100. The i.LON 100 will stop writing to the log files when it only has

256 Kb of flash memory remaining.

Either LF_TEXT or LF_BINARY. This property indicates whether the log file the

Data Logger uses will be an ASCII-text formatted CSV file (LF_TEXT), or use a

proprietary binary format (LF_BINARY).