Field Test Unit Software
5. DATA STORAGE FORMAT
Data storage and communications to/from RAM, Cassette tape and
5.1 FTU FILE FORMAT
The data file consists of three parts, one HEADER message (Line 1:) one or more DATA messages (Line 2: onwards) and an END message line.
1 | HEADER message which contains information about the file. |
1 or more | DATA messages which contain the actual data. |
1END message which terminates the file.
5.1.1HEADER Message Format
The HEADER message is generated by a BASIC ‘PRINT’ statement and read by a BASIC ‘INPUT’ statement.
The HEADER information is used to describe the file and its contents, Fields are separated by commas. (The message is terminated with a C/R L/F sequence.)
HEADER message - Line 1:-
filename,ext,cycle,time,filesize | C/R L/F | |
Where:- |
|
|
filename | = Name of the data file | |
ext | = Filename extension | |
cycle | = Data Logger | cycle time in seconds (usually 5) |
time | = Time and Date in logger cycles past 1JAN80 | |
| (locn 4. Data Logger format) | |
filesize | = Size file in | bytes (excluding this HEADER Line 1: |
| but including | all DATA messages and the END line) |
Section 5. DATA STORAGE FORMAT | 25 |
