Casella CEL Microdust Pro real time dust monitor - Manual (Page 34)

MicroDust Pro Aerosol Monitoring System
34 Casella CEL
Press the PC’s F1 function key to display the software’s on-line help system,
which tells you how to use the software with the MicroDust Pro instrument.
You should refer to the on-line help for all instructions to use the software.
5 Command set for remote control
The MicroDust Pro instrument can be controlled remotely from a PC that is
running a simple terminal emulation program, for example HyperTerminal.
Connection between the instrument and the PC is through the serial data cable
supplied with the instrument. Refer to “
Signals ” on page 10 for information
about the instrument’s serial connection port.
Communication occurs using a baud rate that can vary from 600 baud to
38400 baud. The RS232 serial communication parameters are fixed at using 8
data bits, 1 stop bit and no parity.
You can use a range of single-letter command to control the instrument. These
commands mimic the action of the keypad buttons, allowing remote access to
the entire menu structure.
5.1 Command X – Start real-time output
The instrument transmits the average particulate measurement as it is
displayed on the screen. The measurement updates at intervals of 1 second.
Each transmission terminates with the carriage-return line-feed characters
(ASCII characters 0x0A 0x0D).
Example
2.87
2.55
2.60
5.2 Command Z – Stop real-time output
The instrument stops transmitting the real-time data output.
5.3 Command I – Interrogate target
The instrument transmits a comma-delimited string of characters that contain
two ID strings.
• The first ID string is the number of records stored in the logger.
• The second ID string is the firmware version of the instrument.