Automatic control function programming manual ladder language

General Purpose Functions
6.7 Copy One or More Bytes cpyb
Syntax
cpyb(&dest, &source, n)
&dest: Destination address.
&source: Source address.
n: Number of bytes to be copied.
Copies n bytes from the source to the destination.
Direction of Transfer
To allow transfers to memory areas which overlap, the order of copying depends on the &dest and &source addresses.
- If &dest < &source, the copy is made from the beginning to the end (increasing addresses)
- If &dest > &source, the copy is made from the end to the beginning (decreasing addresses).
Example
cpyb(%M120.&, %M20.&, 3)
%M120.B
%M121.B
%M122.B
Return code
If OK
0
Error
-1: n negative or zero
Bit 7 Bit 0
Bit 7 Bit 0
Bit 7 Bit 0
Bit 7 Bit 0
Bit 7 Bit 0
Bit 7 Bit 0
%M20.B
%M21.B
%M22.B
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