Measurement Specialties 9116 user manual Read Internal Coefficients Command ‘u’, Ufaacc-cc

Pressure Systems, Inc. Model 9116 User’s Manual

READ INTERNAL COEFFICIENTS (Command ‘u’)

Purpose: Returns one (or more contiguous) requested internal coefficient(s) in a specified internal coefficient array, and in the specified response data format.

Command	“ufaacc[-cc]”
	‘u’ is the command letter.
	‘f’ is the format field.
	‘aa’ is the array index field.
	‘cc[-cc]’ is coefficient index [or contiguous range].
Response	“ dddd.. dddd”
	‘dddd’ are the datum fields, each with leading space character.

Description: The 1-character format field (f) is a single decimal digit that defines the format of each returned datum in the response. All datum ( dddd) fields returned will be preceded by a space character. Most coefficients have a floating point datum type (f=0-1), while others have an integer datum type (f=5). Requesting an improper format will result in an “N08" error response. Valid format types for coefficients are shown in the following table:

f		converts each internal value from . . .		max. char.
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
5	long binary integer	to	8-digit hex integer “ xxxxxxxx”	9

The 2-character array index field (aa) is a hexadecimal value selecting a particular internal coefficient array. The first array index (aa=01) refers to channel one’s transducer, the 16th (aa=10) refers to channel sixteen’s transducer. Finally, the last array (aa=11) refers to a special global array.

A single 2- character coefficient index field ( cc) is a hexadecimal value that selects a particular coefficient within the specified array. Multiple contiguous coefficients of the same type may be specified by using a coefficient index“range” specified by adding a hyphen (negative sign) between two such indexes (cc-cc).

The coefficients of internal DH200 transducers used in the Model 9116 are selected with array indexes aa=01 through 10 (hex). All valid coefficient indexes (for each of these arrays) are listed in the following table:

Page 76 www.PressureSystems.com