Casella CEL Software for the Microdust dust monitor - Manual (Page 55)

APPENDIX A
Microdust pro Remote Control Command Set
A.1 Introduction
The Casella Microdust pro Real Time Dust Monitor (RDM) can be remotely
controlled from a PC suitably equipped with a simple terminal emulation
program such as that found in many operating system software packages.
Connection between the PC and the RDM is achieved using the cable that
was originally supplied with each RDM when first delivered. Connect the
6-way mini DIN plug to the socket on the bottom of the RDM and the 9-way
plug into a convenient RS232 communication port on the rear of the PC. If a
special cable needs to be manufactured please consult Chapter 1 for details
of the pin assignments given in Figure 5 and Table 1.
Communication takes place with a variable Baud rate from 600 to 38400 bps,
8 data bits, 1 stop bit no parity over RS232 levels.
A number of single letter commands are given below to action key functions
while mimicking the action of the keypad buttons will allow the whole of the
instrument’s menu structure to be accessed as if the user was pressing the
keypad directly.
The following commands are described:
Command ‘B’: Upload bitmap screen to instrument
Command ‘C’: Clear bitmap
Command ‘I’: Interrogate target
Command ‘R’: Set instrument id and time date
Command ‘T’: Download records stored
Command ‘X’: Start real time output
Command ‘Z’: Stop real time output
Keypad User interface commands.
A.2 Individual Commands
Command ‘X’: - Start real time output
E.g. ‘X’
The instrument will transmit the average dust concentration displayed on the
instrument, and will be updated very second.
i.e.
“2.87[CR][LF]”
“2.55[CR][LF]”
“2.60[CR][LF]” ; etc.
Page 57 of 60
MICRODUST pro Aerosol Monitoring System &
WINDUST pro Application Software - Handbook Appendix A