Omron C200H-ASC11 Manual page 80

Overview of Data Exchanges
3. The CPU Unit and the ASCII Unit both access their own allocated words in
memory. (The ASCII Unit accesses its own data in 16-bit units via the PC
PUT/GET command.) The words allocated in the CPU Unit and memory
words in the ASCII Unit are exchanged during the I/O refresh period.
CPU Unit
MOV
Allocated words
4. The ASCII Unit accesses its own shared memory via a PC EGET/EPUT
command. Asynchronously, the CPU Unit reads/writes the ASCII Unit's
shared memory via an IORD (#00
IORD (#00 ) /IOWR (#00
@ @
C200HX/HG/HE and CS1-series PCs.
CPU Unit
IOWR (#00
((
IORD (#00
I/O refresh
@ @
) instructions are supported only by the
@ @
((
)
)
Read/write
Section 6-1
ASCII Unit
PC PUT
PC GET
Allocated words
) /IOWR (#00 ) instruction. The
@ @
ASCII Unit
PC EGET
PC EPUT
Read/
write
Shared
memory
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