Teledyne 6200T - Sulfides Analyzer - Manual (Page 181)

6200T Total Sulfur Analyzer Remote Operation
Teledyne Analytical Instruments 181
8.2.4. 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, 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. For example, +1.0, 1234.5678, -0.1, 1 are all
valid floating-point numbers.
Boolean expressions are used to specify the value of variables or I/O signals that may
assume only two values. They are denoted by the keywords ON and OFF.
Text strings are used to represent data that cannot be easily represented by other data
types, such as data channel names, which may contain letters and numbers. They consist
of a quotation mark, followed by one or more printable characters, including spaces,
letters, numbers, and symbols, and a final quotation mark. For example, “a”, “1”,
“123abc”, and “()[]<>” are all valid text strings. It is not possible to include a
quotation mark character within a text string.
Some commands allow you to access variables, messages, and other items, such as DAS
data channels, by name. When using these commands, you must type the entire name of
the item; you cannot abbreviate any names.
8.2.5. Status Reporting
Reporting of status messages as an audit trail is one of the three principal uses for the
RS-232 interface (the other two being the command line interface for controlling the
instrument and the download of data in electronic format). You can effectively disable
the reporting feature by setting the interface to quiet mode (refer to Section 6.2.1 and
Table 6-1.
Status reports include DAS data (when reporting is enabled), warning messages,
calibration and diagnostic status messages. Refer to Appendix A-3 for a list of the
possible messages, and this section for information on controlling the instrument
through the RS-232 interface.
8.2.5.1. General Message Format
All messages from the instrument (including those in response to a command line
request) are in the format:
X DDD:HH:MM [Id] MESSAGE<CRLF>
Where:
X is a command type designator, a single character indicating the
message type, as shown in the Table 6-25.