Teledyne GFC-7000T - Trace CO2 Analyzer - manual - Manual (Page 165)

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments 147
6.15.2.3. Command Syntax
Commands are not case-sensitive and all arguments within one command (i.e. ID numbers, keywords,
data values, etc.) must be separated with a space character.
All Commands follow the syntax:
X [ID] COMMAND <CR>
Where
X is the command type (one letter) that defines the type of command. Allowed
designators are listed in Table 6-27 and Appendix A-6.
[ID] is the analyzer identification number (Section 6.11.1.). Example: the Command “?
200” followed by a carriage return would print the list of available commands for the
revision of software currently installed in the instrument assigned ID Number 200.
COMMAND is the command designator: This string is the name of the command being issued
(LIST, ABORT, NAME, EXIT, etc.). Some commands may have additional
arguments that define how the command is to be executed. Press ? <CR> or refer
to Appendix A-6 for a list of available command designators.
<CR> is a carriage return. All commands must be terminated by a carriage return (usually
achieved by pressing the ENTER button on a computer).
Table 6-27: Command Types
COMMAND COMMAND TYPE
C Calibration
D Diagnostic
L Logon
T Test measurement
V Variable
W Warning
6.15.2.4. Data Types
Data types consist of integers, hexadecimal integers, floating-point numbers, Boolean expressions and
text strings.
 Integer data are used to indicate integral quantities such as a number of records, a filter length, etc.
They consist of an optional plus or minus sign, followed by one or more digits. For example, +1, -12,
123
are all valid integers.
 Hexadecimal integer data are used for the same purposes as integers. They consist of the two
characters “0x,” followed by one or more hexadecimal digits (0-9, A-F, a-f), which is the ‘C’
programming language convention. No plus or minus sign is permitted. For example, 0x1, 0x12,
0x1234abcd
are all valid hexadecimal integers.
 Floating point numbers are used to specify continuously variable values such as temperature set
points, time intervals, warning limits, voltages, etc. They consist of an optional plus or minus sign,