Measurement Specialties 9116 Manual do Utilizador descarregar pdf (Página 84)

Measurement Specialties Inc. Model 9116 User’s Manual

Page 72 www.MEAS-SPEC.com

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.

Command

“rppppf”

‘r’ is the command letter

‘pppp’ is the position field

‘f’ is the format field

Response

“ 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:

converts each internal response datum value from . . .

max. char.

single binary float

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

single binary float

8-digit hex integer “ xxxxxxxx”

double binary float

16-digit hex integer “ xxxxxxxxxxxxxxxx”

single binary float

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

single binary float

single binary float (big endian: msb first)

single binary float

single binary float (little endian: lsb first)

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

psi

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Measurement Specialties 9116 Manual do Utilizador Página 84