Hitachi NJI-350B - Manual (Page 201)

Chapter 6 I/O Specifications
6-5
6.3 Internal Output Numbers
Memory is available as an internal output area in the CPU module. There are three areas: bit dedicated area (R), word
dedicated area (WR), and bit/word shared area (M/WM).
Table 6.8 List of I/O number conventions for external I/O
Data type Numbering convention Example
Bit-dedicated
type R
Normal area H000 to H7BF
Special area H7C0 to H7FF
Both are expressed as hexadecimals.
R0
R105
R23C
R7E7
Word dedicated
type WR
Normal area H0000 to
Special area HF000 to
Both are expressed as hexadecimals.
WR0
WR11
WR123
WRF004
DR
Normal area H0000 to
Special area HF000 to
Both are expressed as hexadecimals.
Expresses WR for 2 words in continuation.
DR0
DR11
DR123
DRF004
Bit/word shared
type M
H0000~
M0
M11
M123
WM
H000~
M120F ........... M1200
WM120
WM0
WM11
WM123
DM
H0000 to
Expresses as hexadecimals.
Expresses DM for 2 words in continuation.
DM0
DM11
DM234
• Internal outputs R, WR and DR are completely separate areas. Bit-based operations cannot be performed in the WR.
(Example) Relationships among R100, WR10, and DR10
DR11
R100
WR11 WR10
DR10
WR/DR area Another area
R area
• Because internal outputs M, WM and DM share the same area, bit-based operations are allowed.
(Example) Relationships among M100, WM10, and DM10
DM10
M11F ....... M10F M110
DM11
M109
M10A
M100 .......
WM11 WM10