Appendix B RS-485 Communication Protocol
LiQuilaz II E and S Operations Manual
Page B-7
CPQ
Pop Queue- Discards the report currently on the top of the transmission-queue (the
oldest record). This command does not disturb the sampling process.
CFQ
Flush queue - Discards all reports on the transmission-queue if not sampling.
CQC
Queue Count - Returns the number of reports on the transmission queue and the
sampling status (1 = sampling).
CSR
Software reset - The system does its best to simulate a hardware reset, typically by
stopping keep-alive strobes to a hardware watchdog device. The RSR response will
be transmitted after the LiQuilaz II has reset.
CSS
Start sampling — starts continuous time-base sampling. When the LiQuilaz II is in
sampler mode, this command has no effect. If the instrument is currently sampling,
it will abort the sample and start a new sample.
CTS
Terminate sampling - causes the LiQuilaz II to stop continuous time-mode sampling
and return to the idle state. This command has no effect during Sampler mode.
CVER
The LiQuilaz II will return the original version string of the software currently
running since it is used by the DOS calibration program, and then appends the
current version information. This version can be a string of up to 200 characters in
this format: RVER LIQUILAZ VERSION 3.2, 01/11/99 (1.08 51), Built: April 27, 2017
DC n <LF>
D.C. light voltage. The max voltage is 10 Volts. 0 < n < 4095; 10
Volts corresponds to 4095.
1 n <LF>
Smallest channel particle count. 0 < n < 4294967295
2 n <LF>
0 < n < 4294967295
3 n <LF>
0 < n < 4294967295
. <
.
.
nc n <LF>
Largest channel particle count.
0 < nc < 32; 0 < n < 4294967295
CHKSUM <LF>
Check sum of the data packet.
0 <= CHKSUM <= 65536
<EXT>
The ETX character is 3.
Channel 1 is the channel with the smallest size threshold (i.e., smallest particle bin).
