Benchtop Serial I/O
7/30/2015 3:30 PM
Page 2
Read Setpoints
?SP
Description
Returns the current system Setpoints and operating mode.
Prerequisites
Requires Benchtop firmware revision 1.05 or greater.
Syntax
?SP
Parameters
None
Remarks
Data Returned
?SP
returns a list of 6 comma separated values indicating the current
setpoints and operating mode of the system. These values are returned
in the same order as they appear on the Benchtop screen and
always
in
the units listed below. The following represents the values in the
sequence:
ITEM
DESCRIPTION
1
%RH @Pc setpoint
2
%RH @PcTc setpoint
3
Saturation Pressure setpoint, psia
4
Saturation Temperature setpoint, °C
5
Flow Rate setpoint, L/min
6
Current control mode (1, 2, or 3)
The control mode parameter (item 6 above) indicates which of the 3
possible parameters the system is set to control on. The control modes
are as follows:
MODE
DESCRIPTION
1
System controls on %RH @Pc
2
System controls on %RH @PcTc
3
System controls on Saturation Pressure
Examples
The
?SP
command is used to request the system setpoints and control
mode:
computer sends
?SP
<CR>
benchtop responds
20.14 , 20 , 74.27 , 21.11 , 15 , 2
<CR><LF>
The data returned indicates that the setpoints are:
%RH @Pc = 20.14
%RH @PcTc = 20.00 (also the control mode)
Sat Pressure = 74.27 psia
Sat Temperature = 21.11°C
Flow Rate = 15 L/min
and the Control Mode = 2 (%RH @PcTc)
Содержание 2500 series
Страница 1: ...OPERATION AND MAINTENANCE MANUAL BENCHTOP TWO PRESSURE HUMIDITY GENERATOR SERIES 2500...
Страница 3: ...Model 2500 Two Pressure Two Temperature Humidity Generator...
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