3900 Serial I/O
Page 30
?PU
Read Pressure Units
Description
Returns an integer value that is associated with the Pressure unit’s
type.
Prerequisites
Firmware Ver 2.0 or newer
Syntax
?PU
Parameters
None
Remarks
Data Returned
?PU
returns an integer value indicating which of the 3 possible
pressure unit types the system is using. The Pressure unit types are as
follows:
VALUE
DESCRIPTION
0
psi, pounds per square inch
1
bar
2
hPa, hectoPascals
Examples
The
?PU
command is used to request the current pressure units type:
computer sends
?PU
<CR>
3900 responds
2
<CR><LF>
The 2 returned indicates that the system is operating in hPa,
hectoPascals.
See Also
PU=