Bird Technologies BDS-Manual - Manual (Page 94)

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Data Types
Table 5-59 CIP™ Elementary Data Types
Table 5-60 DATE_AND_TIME Encoding
Note: Range of Date: D#1972-01-01, the start of the Coordinated Universal Time (UTC) era, to D#2151-06-
06 (a total range of 65536 days).
Note: Range of Time: TOD#00:00:00.000 to TOD#23:59:59.999 to a resolution of 1 millisecond.
Note: DATE_AND_TIME is from DT#1972-01-01-00:00:00.000 to DT#2151-06-06-23:59:59.999.
Table 5-61 SHORT_STRING Encoding
Table 5-62 SHORT_STRING Example
Data Type Name Data Type Description
BOOL 8-bit OCTET. Logical Boolean with values TRUE (1) and FALSE (0).
SINT Signed 8-bit integer value.
INT Signed 16-bit integer value.
DINT Signed 32-bit integer value.
USINT Unsigned 8-bit integer value.
UINT Unsigned 16-bit integer value.
UDINT Unsigned 32-bit integer value.
REAL 32-bit floating-point value.
BYTE Bit string (8-bits).
WORD Bit string (16-bits).
DWORD Bit string (32-bits).
SHORT_STRING Character sting (1 byte per character, 1 byte length indicator).
DATE_AND_TIME Date and time of day.
Octet
(Byte)
Number
1
st
2
nd
3
rd
4
th
5
th
6
th
0LSB –
Time 1LSB –
Time 2LSB –
Time 3LSB –
Time 0LSB –
Date 0LSB -
Date
Data Type Description
Struct of:
USINT
Character count – the number of characters contained in the string.
ARRAY of:
SINT String data.
Contents Character Count String data
0LSB 0LSB
Character
Count
0LSB 1LSB 2LSB 3LSB 4LSB
5 ‘H’ ‘E’ ‘L’ ‘L’ ‘O’