Benchtop Serial I/O
7/30/2015 3:30 PM
Page 1
Read Actual Values
?
Description
Returns the current generated system values.
Prerequisites
Requires Benchtop firmware revision 1.05 or greater.
Syntax
?
Parameters
None
Remarks
Data Returned
?
returns a list of 8 comma separated values indicating the current data
and status 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
2
%RH @PcTc
3
Saturation Pressure, psia
4
Chamber Pressure, psia
5
Saturation Temperature, °C
6
Chamber Temperature, °C
7
Flow Rate, L/min
8
System Status
The System Status parameter (item 8 above) indicates whether or not
the system is currently generating (running). The 2 possible returned
values are as follows:
VALUE
DESCRIPTION
0
System is stopped
1
System in running
Examples
The
?
command is used to request the current generated system values
and status:
computer sends
?
<CR>
benchtop responds
19.93,20.00,61.22,12.13,21.11,21.12,14.95,1
<CR><LF>
The data returned indicates that the system is currently running (last
item in the list=1), and the generated values are:
%RH @Pc = 19.93
%RH @PcTc = 20.00
Sat Pressure = 61.22 psia
Chamber Pressure = 12.13 psia
Sat Temperature = 21.11°C
Chamber Temperature = 21.12°C
Flow Rate = 14.95 L/min
