xLadder user manual-V2.0.0.6

2.

If you use the pointer to execute the double word operation,the minimum pointer

interval is 4.

If the value of the pointer is greater than the maximum value of the V memory,

program will generate errors.

The current value of the timer and counter is 16 bits,so the minimum pointer interval

is 2.

7.3 Bit, byte, word and double word access

Bit access

If you want to access a bit, you need to specify the address of the

bit.Address contains region identifier and byte number.Zero is the first

address of all data areas.The decimal point is used to separate the number

of bytes and the number of bits. The range of the number of the bits is

0~7. For example: M0.0

Byte, word and double word access

If you want to access byte, word or double word, you need to specify the

address.Address contains a region identifier, a letter and an address

number.

For example:

VB100 Access V memory address byte 100

VW100 Access V memory address bytes 100 and 101

VD100 Access V memory address bytes 100, 101, 102, and 103

7.4 Memory address range

Bit

Byte

Word

Double Word

I

I0.0~I31.7

IB

IB0~IB31

IW

IW0~IW3

ID

ID0~ID28

0

Q

Q0.0~Q31

QB

QB0~QB3

QW

QW0~QW

QD

QD0~QD

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