Asynchronous Processing - Omron C200H-ASC11 Manual

Asynchronous Processing

8-1

Asynchronous Processing

Example 1
Example 2
236
The monitoring system allows measurement data (PV) from a controller to be
set whenever required in the shared memory of the ASCII Unit. The CPU Unit
reads this data from the ASCII Unit's shared memory as required to monitor it.
CPU Unit
IORD#
((
00
ASCII Unit
Refreshes at high-speed the
measurement data from the controller to
the ASCII Unit's shared memory using
the PC EPUT command.
Here, various data is transferred between ASCII Units. The CPU Unit acts as
an intermediary.
CPU Unit
((
IORD# 00
((
IOWR# 00
ASCII Unit
PC EPUT
Measurement
data
Shared
memory
→ Reads measurement data from the
ASCII Unit as required,using the IORD
(#00
ASCII Unit No. 1
PC EPUT
Shared
memory
ID tag
Section 8-1
ASCII Unit
PC EPUT
Measurement
data
Shared
memory
CPU Unit
) instruction.
@ @
ASCII Unit No. 2
PC EPUT
Shared
memory
Machine