98
The following table indicates the formats of each variable type and of the corresponding parameters:
Variable types
Type
Name
Type
ID
Variable
Variable Identification
Word
01h
Field Size
(bytes)
Field
Name
Field Type
Description
2
Variable
ID
unsigned
integer
Numeric index identifying the
variable defined by the
descriptor
Field SIze
(bytes)
Field
Name
Field Type
Description
2 WORD
Signed or unsigned
integer
2 byte data
DoubleWord
02h
Field size
(bytes)
Field
name
Field type
Description
2
Variable
ID
unsigned
integer
Numeric index identifying the
variable defined by the
descriptor
Field size
(bytes)
Field
name
Field type
Description
4 DWORD
Signed or unsigned
integer or single
precision IEEE754 float
4 byte data
QuadWord
03h
Field size
(bytes)
Field
name
Field type
Description
2
Variable
ID
unsigned
integer
Numeric index identifying the
variable defined by the
descriptor
Field size
(bytes)
Field
name
Field type
Description
8 QWORD
Signed or unsigned
integer or double
precision IEEE754 float
8 byte data
Byte pair
04h
Field size
(bytes)
Field
name
Field type
Description
2
Variable
ID
unsigned
integer
Numeric index identifying the
variable defined by the
descriptor
Field size
(bytes)
Field
name
Field type
Description
1 BYTE
1
Signed or unsigned
integer
1 BYTE
2
Signed or unsigned
integer
Structure: 2 fields,
one byte each
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