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GFK-1115 Chapter 5 PCS Connection Editor 5 - 13
5
Table 5 - 4. Data Type Conversions (Panel Data Type/PLC)
Legend:
Byte u...................Byte unsigned
Word u.................Word unsigned
Word s..................Word signed
Long u..................Long unsigned
LSB......................Least Significant Bit
(Lower Bit)
MSB....................Most Significant Bit
(Upper Bit)
LOB.....................Low Order Byte
(Lower Byte)
HOB....................High Order Byte
(Upper Byte)
PDT.....................Panel Data Type
PDT Data Type Conversion PLC
Bit
→
No conversion.
→
BIT
←
No conversion.
←
Bit
→
The value of Bit is copied to the LSB of WORD. The rest of the
bits of WORD are set to 0.
→
WORD
*
←
Values higher than 1 are limited to 1.
←
Byte u.
→
The LSB of Byte u. is copied to BIT.
→
BIT
←
The value of BIT is copied to the LSB of Byte u. The rest of the
bits of Byte u. are set to 0.
←
Byte u.
→
Byte u. is copied to the LOB of WORD. The HOB of WORD is set
to 00.
→
WORD
*
←
Values higher than 255 are limited to 255.
←
Byte u.
→
Byte u. is copied to the LOB of INT. The HOB of INT is set to 0.
→
INT
*
←
Values higher than 255 are limited to 255. Negative values are
limited to 0.
←
PDT Data Type Conversion PLC
Word u.
→
The LSB of Word u. is copied to BIT.
→
BIT
←
The value of Bit is copied to the LSB of Word u. The rest of the
bits of Word u. are set to 0.
←
Word u.
→
No conversion.
→
WORD
*
←
No conversion.
←
Word u.
→
Values higher than 32767 are limited to 32767.
→
INT
*
←
Negative values are limited to 0.
←
Word u.
→
Word u. is copied to the lower word of DWORD. The upper word
is set to 0.
→
DWORD
←
Values higher than 65535 are limited to 65535.
←