Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 55)

4.4 Registers (Variables)
4.4.2 Register Types
4-14
4.4.2 Register Types
( 1 ) Global Registers
Global registers are variables that are shared by ladder programs, user functions, motion programs, and sequence pro-
grams. In other words, the operation results of a ladder program can be used by other user functions, motion programs,
or sequence programs.
Πn: decimal digit, h: hexadecimal digit
Type Name
Designation
Method
Usable Range Description
S
System registers
(S registers)
SBnnnnnh,
SWnnnnn,
SLnnnnn,
SFnnnnn,
SAnnnnn
SW00000 to
SW08191
These registers are prepared by the system. They report the
status of the Machine Controller and other information.
The system clears the registers from SW00000 to
SW00049 to 0 at startup.
They have a battery backup.
M
Data registers
(M registers)
MBnnnnnh,
MWnnnnn,
MLnnnnn,
MFnnnnn,
MAnnnnn
MW00000 to
MW65534
These registers are used as interfaces between programs.
They have a battery backup.
I
Input registers
(I registers)
IBhhhhh, IWh-
hhh, ILhhhh,
IFhhhh
IW0000 to
IW7FFF
These registers are used for input data.
IW8000 to
IWFFFF
These registers store the motion monitor parameters.
These registers are used for Motion Modules.
O
Output registers
(O registers)
OBhhhhh, OWh-
hhh, OLhhhh,
OFhhhh
OW0000 to
OW0FFF
These registers are used for output data.
OW8000 to
OWFFFF
These registers store the motion setting parameters.
These registers are used for Motion Modules.
C
Constant registers
(C registers)
CBnnnnnh,
CWnnnnn,
CLnnnnn,
CFnnnnn,
CAnnnnn
CW00000 to
CW16383
These registers can be read in programs but they cannot be
written.
The values are set from the MPE720.