Teledyne GFC 7001E Command Syntax, Data Types, ID Command CR, Teledyne’s Serial I/O Command Types

Remote Operation Model GFC7001E Carbon Dioxide Analyzer

8.1.7.2.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

Xis the command type (one letter) that defines the type of command. Allowed designators are listed in Appendix A-6.

[ID]	is the machine identification number (Section 8.1.6). Example: the Command “? 700”
	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 700.
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 key on a computer).

Table 8-3: Teledyne’s Serial I/O Command Types

COMMAND	COMMAND TYPE
C	Calibration
D	Diagnostic
L	Logon
T	Test measurement
V	Variable
W	Warning

8.1.7.3.Data Types

Data types consist of integers, hexadecimal integers, floating-point numbers, Boolean expressions and text strings.

Integer data: 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: 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 number: 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, followed by zero or more digits, an optional decimal point and zero or more digits.

At least one digit must appear before or after the decimal point.

Scientific notation is not permitted.

Teledyne Analytical Instruments 157