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欧姆龙PLC数据类型

2014-6-5 09:18| 发布者: admin| 查看: 2257| 评论: 0
摘要: 欧姆龙PLC数据类型 BOOL Address of a binary bit - a logical Boolean on or off state. This type is typically used for contacts or coils.CHANNEL This is a special data type, for backward compatibility. I ...
欧姆龙plc数据类型


BOOL  Address of a binary bit - a logical Boolean on or off state. This type is typically used for contacts or coils.
CHANNEL  This is a special data type, for backward compatibility. It is an address (non-bit) to data of any type (unsigned or signed, one or more words), so can be used in place of any of the above data-types except NUMBER and BOOL. The data type is weak, and so checking is limited (e.g. CX-Programmer cannot check if the address is being used for BCD or binary values).
DINT  Address of a signed, double binary word.
INT  Address of a signed, single binary word.
LINT  Address of a signed, quad binary word.
NUMBER  A literal numeric value. Not an address. The value can be signed, or floating point.
NUMBERs are used for any literal value or for timer/counter identifiers (in this case, only unsigned integer values are allowed). Floating point values are only suitable within IEEE REAL type operands.
Note: when used as BCD number operands, the value is treated as a hexadecimal value (e.g. using a NUMBER E234Eis equivalent to typing E1234Eas the operand, so that the decimal interpretation is made of the value). The value of a NUMBER data type is assumed to be decimal, unless it is prefixed with '#' for a hexadecimal value.
REAL  Address of a double word floating point value (IEEE format - use the UDINT
type for the BCD, FDIV format).
LREAL  Address of a long word floating point value (IEEE format - use the
ULINT type for the BCD format).
UDINT  Address of an unsigned, double binary word.
UDINT_BCD  Address of an unsigned, double BCD word.
UINT  Address of an unsigned, single binary word.
UINT_BCD  Address of an unsigned, single BCD word
ULINT  Address of an unsigned, quad binary word.
ULINT_BCD  Address of an unsigned, quad BCD word.
WORD  Address of a bit string of 16 bits.
DWORD  Address of a bit string of 32 bits.
LWORD  Address of a bit string of 64 bits.

 

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