Yaskawa MP920 User's Manual Design - Manual (Page 111)

3.6 Registers
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3.6.6 Register Ranges in Programs
The following figure shows the ranges that can be called for registers in programs.
DWG H03 (Drawing)
Registers common to all drawings
System registers
(SB, SW, SL, SFnnnnn)
Data registers
(MB, MW, ML, MFnnnnn)
Input registers
(IB, IW, IL, IFnnnnn)
Output registers
(OB, OW, OL, OFnnnnn)
Constant registers
(CB, CW, CL, CFnnnnn)
Registers for individual functions
500 steps max.
Program
FUNC-0000 (Function)
Function Input registers 17 words
(XB, XW, YL, YFnnnnn)
Function output registers 17 words
(YB, YW, YL, YFnnnnn)
Constant data. 16,384 words max.
(#B, #W, #L, #Fnnnnn)
Individual data. 16,384 words max.
(DB, DW, DL, DFnnnnn)
500 steps max.
Registers for individual drawings
Constant data. 16,384 words max.
(#B, #W, #L, #Fnnnnn)
Individual data. 16,384 words max.
(DB, DW, DL, DFnnnnn)
Program
1
1
1
2
3
4
4
2
3
Internal function registers 64 words
(ZB, ZW, ZL, ZFnnnnn)
External function
registers
(AB, AW, AL,
AFnnnnn)
: Registers that are common to all drawings can be called from any drawing or function.
: Registers that are unique to each drawing can be called only from within that drawing.
: Registers that are unique to each function can be called only from within that function.
: Registers that are common to all drawings and registers that are unique to each drawing can
be called from a function using the external function registers.