Particle Measuring Systems LASAIR II 550L Operator's Manual

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LLAASSAAIIR R III I OOppeerraattoorr’’s s MMaannuuaall PPaagge e FF--11
Appendix FAppendix F
PMS Multi-Drop Protocol (MiniLaz Emulation)PMS Multi-Drop Protocol (MiniLaz Emulation)
This protocol is designed to be used This protocol is designed to be used on an RS-485 baon an RS-485 based system, with multiplesed system, with multiple
individually addressable instruments. All communications are polled with aindividually addressable instruments. All communications are polled with a
sensor address. The host program must take care of sensor address. The host program must take care of querying the unit for data.querying the unit for data.
RS-485 communications require an external RS-485 communications require an external RS-232 to RS-485 converter. TheRS-232 to RS-485 converter. The
converter must support automatic send data control. Older conconverter must support automatic send data control. Older converters whichverters which
require CTS control (hardware require CTS control (hardware flow control) will not work flow control) will not work properlyproperly..
TTested RS-232/RS-485 ested RS-232/RS-485 convertersconverters
Both of these models have beeBoth of these models have been tested with the LASAIR II in MiniLazn tested with the LASAIR II in MiniLaz
emulation mode connected to Facility Net.emulation mode connected to Facility Net.
NOTE:NOTE: A null modem is required to connect between these models and theA null modem is required to connect between these models and the
LASAIR II.LASAIR II.
••
RS-232 to RS-485 converter with automatic send-data control andRS-232 to RS-485 converter with automatic send-data control and
opto-isolation: P/N 485OT9Lopto-isolation: P/N 485OT9L
•• RS-232 to RS-485 Converter with automatic send-data RS-232 to RS-485 Converter with automatic send-data control and quick-control and quick-
disconnect terminal block: P/N disconnect terminal block: P/N 485PTBR485PTBR
Both of the preceding models are Both of the preceding models are available from:available from:
B & B ElectronicsB & B Electronics
707 Dayton Rd.707 Dayton Rd.
P. O. Box 1040P. O. Box 1040
Ottawa, IL 61350Ottawa, IL 61350
Phone: (815) 433-5100Phone: (815) 433-5100
Web: http://www.bb-elec.comWeb: http://www.bb-elec.com
Both models require external 12 VDC power Both models require external 12 VDC power @100 mA. One solution is the@100 mA. One solution is the
120 V120 VAC to 12 AC to 12 VDC supply P/N 485PSVDC supply P/N 485PS2.2.
The LASAIR II provides an extended The LASAIR II provides an extended version of the command set used in version of the command set used in thethe
obsolete MiniLaz instrument, and obsolete MiniLaz instrument, and offers backward compatibilityoffers backward compatibility. This protocol. This protocol
allows a LASAIR II to be a drop-in replacement for a MiniLaz on a Facility-allows a LASAIR II to be a drop-in replacement for a MiniLaz on a Facility-
VView iew installation.installation.

Particle Measuring Systems LASAIR II 550L Specifications

General

Brand	Particle Measuring Systems
Model	LASAIR II 550L
Category	Measuring Instruments
Language	English