Page B-8
LiQuilaz II E and S Operations Manual
Appendix B RS-485 Communication Protocol
CSATH nc n1 n2 n3 ... n(nc)
Set absolute PHA thresholds.
nc = the number of thresholds to be programmed.
nc through n(nc) are addresses that represent the RAM location boundaries of the
channels. For example, channel 1 runs from n1 to n2, channel 2 runs from n2 to n3
and the last channel is all locations greater than n(nc).
The maximum values for nc and n are 31 and 8191 respectively for the LiQuilaz II
Liquid Particle Counter. The values are stored in battery backup RAM. The last
values used are the default values on power up. Returns 1 if the values are accepted
or 0 if sampling or the values are out-of- range.
CRATH
Read absolute PHA thresholds. The response is RRATH nc 1 2 3 ... nc. The first
number (nc) is the number of thresholds that are currently programmed. Following
the numbers are
nc
addresses that represent the RAM location boundaries of the
channels.
For example, channel 1 runs from n1 to n2, channel 2 runs from n2 to n3 and the last
channel is all locations greater than n(nc). The maximum values for nc and n are 31
and 8191 respectively for the LiQuilaz II Liquid Particle Counter.
CSPHA ...
Stores the current state of the PHA. The values are stored in battery backup RAM.
The last values used will be the default values on power up. The response to the
command is RSPHA n, where n = 1 is a valid state of the PHA and n = 0 is an invalid
state. The detailed format of the command is as follows.
Below is the format for the calibration string in the LiQuilaz II Liquid Particle
Counter. The calibration strings for the S-Series and E-Series are slightly different.
The calibration string created by SamplerSight-Pharma (for E20 or E15P) appends
the calibrated flow rate to the end of the string. The S series calibration strings have
checksums, and the E series calibration strings do not.
The following calibration information will be downloaded and uploaded as an ASCII
string. The format is as follows:
Each token within the string is separated by spaces (character 0 x 20), and the string
is null terminated.
Date
<MM/DD/YY>
Time
<HH:MM:SS>
Gain
(double)
No. Size/SST pairs
(int)
Pairs of Size/SST Combinations
Size
(double)
SST
(int)
High Gain Offset
(int)
Low Gain Offset
(int)
Size Checksum
(double)
SST Checksum
(double)
