Yaskawa MP900 Series Machine Controller for Standard Operation - Manual (Page 307)

Motion Programming
5.3.2 Setting the Number of Global Registers
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5.3.2 Setting the Number of Global Registers
Defining global registers can reduce the need for communications, but it requires managing
the global registered used in ladder logic programs and motion programs.
There are limits on the global registers (M and O registers) that can be used in motion pro-
grams. Motion programs that use registers that are out of the specified ranges will cause
compiler errors to prevent mistakes in programming.
An example of an M register map is shown below. O registers depending on the I/O registers
allocated in the Module Configuration Definitions Window.
Fig 5.2 M Register Map
„ Opening the Register Write Enable Setting Window
Use the following procedure to open the Resister Writing Permission Window.
1. Double-click the Motion Folder under the Program Folder in the File Manager Window.
MW00000
MW00001
MW00002
MW32767
Reserved by the system
Interpolation overrides
Motion control work registers
Alarm output registers
Current position output
registers
Not used
Allocated in the Group Definition.
O and I registers can also be allo-
cated instead of M registers.
The range of registers that
can be used is defined.
Program Folder
High-speed
drawing
Motion