GE GFK-0804B 用户手册
4
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Micro PLC Programmer’s Guide – April 1994
GFK-0804B
Indirect Move
The Indirect Move function copies a constant or the content of register to a variable
register location. The first part of this function specifies the data to be copied. The second
part is a register that points to the actual register where the data will be placed. This
allows the register where the data is placed to be changed as required for the program.
In the example on the facing page, an Indirect Move function copies the content of
register R002 into a register which is pointed to by register R003. During one program
scan, R003 might point to register R020. In another scan, it might point to register R021.
register location. The first part of this function specifies the data to be copied. The second
part is a register that points to the actual register where the data will be placed. This
allows the register where the data is placed to be changed as required for the program.
In the example on the facing page, an Indirect Move function copies the content of
register R002 into a register which is pointed to by register R003. During one program
scan, R003 might point to register R020. In another scan, it might point to register R021.
Specifying a Location in the Pointer Register
Ordinarily, the variable register for an Indirect Move function is placed into the pointer
register by a Move instruction in the application program. It is also possible to enter a
location from the programmer, however.
register by a Move instruction in the application program. It is also possible to enter a
location from the programmer, however.
In either case, enter the number of any register from R001 to R500.
Example:
[ R1 ! @R20 ]
R1
R20
385
2162
R385
2162
!
@
46140
Programming Software Instructions
1.
Select I–Move (F7) from the Math/Move function keys.
2.
Enter the number to be moved.
This can be a constant, or the contents of a specified
memory location (see above). For example: R001. Then press the Enter key.
3.
Enter a memory location to contain the result.
Press the Enter key.