Virtual Memory Space - YASKAWA S-7 Series Command Manual

9.1 Virtual Memory Space

9.1 Virtual Memory Space
The virtual memory space is the memory area that can be accessed by using the read memory
command (MEM_RD: 1Dh) and write memory command (MEM_WR: 1Eh).
By adopting the concept of virtual memory, the memory areas that vary among devices and
vendors can be accessed at common addresses.
FFFF FFFF
8000 4002
8000 4000
8000 0000
7FFF FFFF
1000 0000
0FFF FFFF
0001 02FF
0001 0000
0000 03FF
0000 0000
9-2
(h)
Vendor-specific area
Adjustment operation area
Reserved
Device information area
Common parameter area
ID information area
Vendor-specific area
• Adjustment operation area
Device information area
• Common parameter area
• Common parameters can be read or written.
• ID information area
• Data that can be read/written using the ID_RD command
• Vendor ID code, device code, device version, etc.