Measurement Specialties 9116 User Manual

Pressure Systems, Inc.                                                                                        Model 9116 User’s Manual 
 
 

 

Page 72 

 

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READ HIGH-PRECISION DATA  (Command ‘r’) 
 

Purpose:    Returns the most recently acquired engineering-unit pressure data for the  
 

 

  specified channels.  Each datum returned in the response will be in the specified  

 

 

  high-precision data format.   

 

“rppppf” 
 
‘r’  is the command letter 
‘pppp’ is the  position field 
‘f’ is the format field 

“ dddd.. dddd” 
 
‘ dddd’ are datum fields, each with leading space (except f= 7 or 8). 

 
 
Description:  The 4-character hex  position field (pppp) specifies a 16-bit binary bit-map, with  
 

 

  each bit (set to 1) specifying a particular channel number (16-1, left-to-right).   

 

 

  Models 9021 and 9022 use only channels 12-1. 

 
 The 

1-character 

format field (f) specifies the format of each data field (dddd) that  

 

will be returned in the requested response.  The first datum returned in the  
response will be for the highest channel number specified.  Each (non-
binary) datum will be preceded by a space character (except in the case of f= 7). 
Some formats may not be applicable to the specific type of data being requested.  
Valid formats are shown in the following table: 

 

0  single binary float 

to  7-10-digit signed decimal “ [-xxx]x.xxxxxx” 

13 

1  single binary float 

to  8-digit hex integer “ xxxxxxxx” 

9 

2  double binary float 

to  16-digit hex integer “ xxxxxxxxxxxxxxxx” 

17 

5  single binary float 

to  long integer (EU*1000) then to 8-digit hex integer 

9 

7  single binary float 

to  single binary float (big endian: msb first) 

4 

8  single binary float 

to  single binary float (little endian: lsb first) 

4 

 
 

Unless the EU conversion scalar is altered, the returned data will be in units of 

 

 

psi