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E3X-DRT21-S
User’s Manual
Section 4
APP
E
NDIX
Section 4
DeviceNet Connection Settings
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Step 4: Setting the DeviceNet Master
1. Select and double-click the DeviceNet master.
2. Register the communication unit if it has not been previously registered as a
registered device.
3. Select the communication unit and click the [Advanced Settings] button.
4. Open the [Connection].
5. The following dialog box will be displayed. Select [User Setup] and set the
connection path.
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Step 5: Setting the COS/Cyclic Heartbeat Timer
From the screen displayed in step 4, set the COS/Cyclic heartbeat timer.
1. For a Cyclic connection, data is periodically sent by the slave in a cycle determined
by this setting.
2. For a COS connection, data is periodically sent by the slave in a cycle determined by
this setting even if the data has not changed, and checks that a communications
error has not occurred.
The higher the value is, the lesser the load on the network is. However, the time
required to detect errors is longer with higher values.