System Configuration - Omron CPM2C Operation Manual

Example Application
7-9-1

System Configuration

Simple Commu-
nications Unit
Unit number 0
•
Connected by CompoWay/F.
•
Constantly monitors the PV.
•
The target temperature is changed
to100°C b y input condition 0005.
DM Allocation
Communications with
CPU Unit
Communications with
Components
The example system has three E5CN Temperature Controllers connected to
the Simple Communications Unit.
CPU Unit
Unit number 2
•
Connected by SYSWAY.
•
The Simple Communications Unit
reads command group 1 only.
The DM allocation is shown in the following table.
Unit settings
All (shared) Control Data Area
Unit 0 Unit 0 Read Variable Type Area
Unit 0 Write Variable Type Area
Unit 0 Read Data Area
Unit 0 Write Data Area
Unit 2 Unit 2 Read Data Area
Unit 2 Write Data Area
Unit 3 Unit 3 Read Data Area
Unit 3 Write Data Area
Communications speed: 19,200 bps
The following settings are used for the RS-485 communications:
Item
Communications speed
Data bits
Parity
Stop bits
Unit number 3
•
Connected by SYSWAY.
•
The Simple Communications Unit writes
a target temperature of 200°C when the
power is turned ON and thereafter just
reads command group 1.
Area name
DM 0000 to DM 0102
DM 0150 to DM 0154
DM 0160 to DM 0164
DM 0170 to DM 0173
DM 0180 to DM 0183
DM 0200 to DM 0210
DM 0220 to DM 0228
DM 0240 to DM 0250
DM 0260 to DM 0268
Setting
19,200 bps
7 bits
Even
2 bits
Section 7-9
DM words
259