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====== Bit and Byte Modifiers ======

A variable’s bits and bytes can be accessed individually by using the commands shown below:

<code xbasic>
Dim A As Integer
A.LowByte = &H12      ' Store &H12 at A’s lowest byte
</code>

**NOTE:** These bit, nibble, and byte modifiers is not supported for the ''Single'' type, but are supported for the ''Integer'' and ''Long'' data types.

**NOTE:** These bit, nibble, and byte modifiers is not supported for the Ladder Logic sharing variable.

<code>
_D(10).byte0 ' No supported

Dim A As Integer
Dim B As Byte
A = _D(10)
B = A.byte0 ' Move it like this
</code>
===== Bit =====

|LOWBIT |Variable’s bit 0|
|BIT0 to 31 |Variable’s bit 0 through 31|

<code xbasic>
A.BIT2 = 1          ' Make bit 2 of A equal to 1.
</code>

{{ :cubloc:modifiers_expressing_numbers:modifier_bit.png?nolink |}}

===== Nibble =====
A nibble is 4 bits. The user can access individual nibbles to make
processing certain data formats easier.

|LOWNIB |Variable’s NIBBLE 0|
|NIB0 to 7 |Variable’s NIBBLE 0 to 7|

<code xbasic>
A.NIB3 = 7 ' Store 7 in Nibble 3 of A
</code>

{{ :cubloc:modifiers_expressing_numbers:modifier_nib.png?nolink |}}

===== Byte =====

To access specific bytes of a variable, the following can be used.

|LOWBYTE, BYTE0 |BYTE 0 of Variable|
|BYTE1 |BYTE 1 of Variable|
|BYTE2 |BYTE 2 of Variable|
|BYTE3 |BYTE 3 of Variable|

<code xbasic>
A.Byte1 = &HAB     'Store &HAB in byte 1 of variable A
</code>

{{ :cubloc:modifiers_expressing_numbers:modifier_byte.png?nolink |}}

===== Word =====

To specify a certain Word of a variable, the following can be used:
(A Word is 16 bits)

|LOWWORD, WORD0 |Word 0 of variable|
|WORD1 |Word 1 of variable|

<code xbasic>
A.Word1 = &HABCD     Store &HABCD in word 1 of variable A
</code>

{{ :cubloc:modifiers_expressing_numbers:modifier_word.png?nolink |}}

* Tip: Need to access 5 bits of a variable?

<code xbasic>
NewVariable = Variable AND 0x1F.
</code>

This will mask the last 5 bits of the variable.



----


====== Expressing Numbers ======

There are three possible ways to represent numbers in Cubloc BASIC:
binary, decimal and hexadecimal. The binary and hexadecimal
representations are useful when interfacing to digital devices. The decimal
representation is the standard human readable format.

Examples:

Binary : &B10001010, &B10101,0b1001001, 0b1100 \\ 
Decimal : 10, 20, 32, 1234 \\
Hexadecimal : &HA, &H1234, &HABCD, \\
              0xABCD, 0x1234        <-- Similar to C



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