Allocation Method Overview; Overview - Omron EJ1 - 07-2008 Operation Manual

Allocation Method Overview

4-1 Allocation Method Overview
4-1-1

Overview

36
This section provides an overview of allocation methods for performing
remote I/O communications from the master through the DeviceNet Commu-
nications Unit.
The DeviceNet Communications Unit can be used to allocate I/O memory in
the master to the following Temperature Controller parameters.
• Operation command/status parameters
• Monitor parameters
• Parameters that can be changed during operation
The DeviceNet Communications Unit can be used to select data from the
Temperature Controllers and DeviceNet Communications Unit and specify the
words to allocate to that data.
Data is automatically exchanged between the master and DeviceNet Commu-
nications Unit, allowing Temperature Controllers to be controlled and moni-
tored from the master
programming.
DeviceNet Master
DeviceNet
DeviceNet
Communications
Allocated data
IN Area
Process
values, etc.
OUT Area
Set points,
etc.
Use either of the following two methods to allocate DeviceNet Communica-
tions Unit I/O in the master.
without requiring
Master CPU Unit I/O memory
CPU Unit
Temperature
Controllers
Unit Unit ---
0 1
Section 4-1
special communications
IN Area
Process
values, etc.
OUT Area
Set points,
etc.