Omron EJ1 - 07-2008, Руководство по эксплуатации, Страница: 165 / 198

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Connecting to a Master from Another Company Appendix A
2. The default assignments is the 111 (ch3 Control Output (Heating)) for control output 3 and 143 (ch4
Control Output (Heating)) for control output 4. Change these assignments as required when using a
TC2 Unit.
3. When settings are read, data read for non-existing Temperature Controllers are not dependable. Do
not change the Temperature Controller configuration when reading or writing settings.
Data Size and Connection Types
The DeviceNet Communications Unit supports both simple I/O allocation and I/O allocations set from the Con-
figurator when the Unit is connected to another company’s master, but the data size of the IN and OUT Areas
of the DeviceNet Communications Unit must be set. The size of the DeviceNet Communications Unit’s data
areas will depend on the setting method used. For details, refer to
SECTION 4 Remote I/O Communications.
If the connection type can be set when another company’s configurator is being used, select a connection sup-
ported by the DeviceNet Communications Unit.
The following table shows the connection types and data sizes for OMRON DeviceNet Communications Units.
Note The size of the IN/OUT Areas depends on the setting.
DeviceNet I/O communications support the following types of connections.
More Detailed DeviceNet Specifications
The following device profiles contain more detailed DeviceNet specifications for the DeviceNet Communica-
tions Unit if more information needs to be registered in the scan list.
Device Profiles
Model Supported connections Data size (bytes)
Poll Bit strobe Change of
state (COS)
Cyclic IN OUT
DeviceNet
Communica-
tions Unit EJ1N-HFUB-
DRT Yes No Yes Yes 1 to 200
(See note.)
1 to 200
(See note.)
Connection type Details Remarks
Poll Used to exchange data between the master and
individual slaves by sending and receiving com-
mands and responses. (Output data is allocated
for commands and input data is allocated for
responses). ---
Change of state
(COS) Normally, input and output data are sent by mas-
ter and slaves at regular cycles, but with a COS
connection, data is sent to the master or slave
when the master or slave data changes. By setting a long cycle interval, the Network will
not be loaded with communications for minor
data changes, thereby improving the overall effi-
ciency of the Network.
Cyclic Masters and slaves send output or input data at
regular cycles. ---
General data Compatible DeviceNet Specifications Volume I, Release 1.3
Volume II, Release 1.3
Vendor name OMRON Corporation Vendor ID = 47
Device profile name Slaves: Communications
Adapter Profile number = 12
Manufacturer catalog number H155
Manufacturer revision 1.01