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2
Features and System Configuration
Section 1-1
1-1
Features and System Configuration
1-1-1
Features
The DeviceNet Communications Unit enables a DeviceNet master to commu-
nicate with multiple EJ1 Temperature Controllers through the DeviceNet to
monitor their process values, write parameters, and control operation.
Using DeviceNet Functions
Simultaneously Managing
Multiple Temperature
Controllers from the
Master
Up to 16 Temperature Controllers can be connected to a single DeviceNet
Communications Unit. The DeviceNet Communications Unit is connected to
the master as a DeviceNet slave. Up to 63 slaves can be connected to a sin-
gle master, so multiple DeviceNet Communications Units and other types of
slaves can be managed as part of the same system.
Remote I/O
Communications
The master and DeviceNet Communications Units can share I/O by using
remote I/O communications. Data in the EJ1 Temperature Controllers, such
as process values (PVs) and set points (SPs), can be allocated for communi-
cations with the master to enable sending and receiving the allocated data via
remote I/O communications, without requiring special programming.
• Remote I/O Communications without a Configurator
Using the DeviceNet Communications Unit, basic Temperature Controller
data can be allocated for communications with the master, such as pro-
cess values (PVs) and set points (SPs), without requiring a Configurator.
This is called “simple I/O allocation.” Simple I/O allocation can be easily
set from the DIP switch of the DeviceNet Communications Unit.
• User-set Data Allocations with a Configurator
The specific data required for communications with the master can also
be allocated by using I/O allocations from the Configurator.
Expansion Remote I/O to
Enable Using More Than
100 Words of Parameters
Expansion remote I/O can be used to read and write parameters. Specific
parameters allocated in I/O memory of the master can be switched to a vari-
ety of parameters by using memory operations. This function enables manipu-
lating more than 100 words of parameters. Even if the number of parameters
to be read and written increases, modifications can be handled simply by
changing operations in the memory of the master.
Explicit Message
Communications
By executing commands from the PLC, various operations can be performed,
including reading/writing specific parameters, such as reading process values
or writing set points, and performing operations using operation commands.
CompoWay/F communications commands can also be executed using explicit
message communications.
Setting, Monitoring, and
Operating the
Temperature Controller
from the Configurator
The Configurator (Ver. 2.2 or higher) or CX-Integrator (Ver. 2.2 or higher) can
be used to create the device parameters for the DeviceNet Communications
Unit, including settings for the DeviceNet Communications Unit and setting for
the Temperature Controllers. The Configurator can then be used to download
the parameters together to the DeviceNet Communications Unit and Temper-
ature Controllers. (See note.)
The Configurator can also be used to monitor Temperature Controller process
values, and execute operation commands for the Temperature Controllers.
The Configurator can be used to copy parameters between Temperature Con-
troller channels, allowing the initial parameters of Temperature Controllers
requiring the same or similar parameters to be easily set.
Summary of Contents for EJ1 - 07-2008
Page 3: ...iv...
Page 19: ...xx...
Page 33: ...14 Initial Temperature Controller Settings Section 1 4...
Page 53: ...34 Wiring the Temperature Controllers Section 3 4...
Page 101: ...82 Ladder Programming Examples Section 4 6...
Page 143: ...124 Sending Explicit Messages Section 6 5...
Page 155: ...136 Message Communications Characteristics Section 7 2...
Page 163: ...144 Maintenance Section 8 2...
Page 189: ...170 Allocation Numbers for Configurators Manufactured by Other Companies Appendix B...
Page 197: ...178 Index...