ProSoft Technology ILX56-MM - Manual (Page 90)

Reference ILX56-MM ♦ ControlLogix Platform
User Manual InRAx Message Manager for Industrial Communication
Page 90 of 112 ProSoft Technology, Inc.
February 6, 2012
6.3 Base Data Type Conversion Rules
6.3.1 Boolean
Source Conversion
BOOL Direct Assignment.
INT8, UINT8, CHAR,
BYTE, INT16, UINT16,
WORD, INT32,
UINT32, DWORD,
INT64, UINT64, or
QWORD
If the source data value is zero, the destination data value will be set to
zero. If the source data value is nonzero, the destination data value will be
set to one.
FLOAT32 or FLOAT64 The source value is rounded to the nearest INT64 value and the above
INT64 to BOOL conversion rule applied.
STRING The string is converted to INT64 and moved according to the above INT64
to BOOL conversion rule. If the string could not be converted to INT64
(invalid chars, overflow, and so on), a conversion error will result
6.3.2 INT8, UINT8, CHAR, or BYTE
Source Conversion
BOOL The source value of zero or one is assigned to the destination.
INT8, UINT8, CHAR,
or BYTE
Direct assignment. If source is unsigned (UINT8, CHAR, or BYTE) and
dest is signed (INT8) a value change may result (255 to -1 for example). If
source is signed and dest is unsigned a value change may result (-2 to 254
for example).
INT16, UINT16,
WORD, INT32,
UINT32, DWORD,
INT64, UINT64, or
QWORD
The most significant source data byte(s) are discarded (possible data loss).
The least significant source data byte is copied to the destination.
FLOAT32 or FLOAT64 The source value is rounded to the nearest INT64 value and the above
INT64 to 8 bit INT conversion rule applied. If the rounded source value will
not fit in an INT64 a conversion error will result.
STRING The string is converted to INT64 and moved according to the above INT64
to 8 bit INT conversion rule. If the string could not be converted to INT64
(invalid chars, overflow, and so on) a conversion error will result.