Omron E5ZN-DRT, Operation Manual

Page: 33 / 162

18
Startup Procedure Section 2-2
Note When changing the baud rate of the master after starting the DeviceNet Com-
munications Unit, turn ON the communications power supply of the DeviceNet
Communications Unit again, and restart the Unit.
When setting the Configurator only, without a master, the baud rate of the
Configurator will be automatically detected.
2-2-2 I/O Allocation Using the Configurator
Turn OFF pin 1 of the DIP switch on the rear of the DeviceNet Communica-
tions Unit.
Use the Configurator to allocate words for Temperature Controller data in the
IN and OUT Areas used by the DeviceNet Communications Unit.
Use this method for any of the following situations.
• To select any parameters (such as PID constants) or status information,
apart from the Temperature Controller set points (SPs), process values
(PVs), or alarm outputs, and allocate words for them in the master (up to
100 words each in the IN Area and OUT Area).
• To allocate data in any order (up to 100 words each in the IN Area and
OUT Area).
• To use remote I/O communications to allocate only data that is always
required in the master and not allocate unnecessary data.
Note Up to 100 words each can be allocated in the IN Area and OUT Area for
remote I/O communications. To read and write larger amounts of data, use
explicit messages, or use two or more DeviceNet Communications Units to
reduce the number of Temperature Controllers connected to each DeviceNet
Communications Unit.
18 Start remote I/O communications. Enable the master’s scan list and change the PLC to
RUN Mode.
Remote I/O communications will start, and the contents
of the IN and OUT Areas in the master and DeviceNet
Communications Unit will be synchronized.
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Using explicit message communi-
cations Send explicit messages from the master.
Explicit messages can be used to perform control and
monitoring that cannot be achieved using the IN and
OUT Areas alone, by sending explicit messages to the
DeviceNet Communications Unit.
90
19 Set the initial settings or monitor
the Temperature Controller. With the Configurator online, perform Temperature Con-
troller initial settings or monitoring from the Edit Device
Parameters Window for the DeviceNet Communications
Unit. 78
20 Upload the parameters of the Tem-
perature Controller to the
DeviceNet Communications Unit. When the system has started normally, upload (backup)
all the parameters to the DeviceNet Communications
Unit in case of Temperature Controller malfunction. Cre-
ating a backup copy of the parameters will allow parame-
ters to be easily reset onsite after a Temperature
Controller has been replaced, without requiring a Config-
urator.
Procedure: Turn OFF pin 2 of the DIP switch on the front
panel of the DeviceNet Communications Unit, turn ON
pin 1 (1 to 5 s), and then turn it OFF again.
24 and 125
Step Item Details Reference
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