Omron E3X-DRT21 Operation Manual page 131

DeviceNet Connection Settings
Step 4: Setting the DeviceNet Master
1. Select and double-click the DeviceNet master.
2. Register the Fiber Amplifier Sensor Communication Unit if it has not been previously registered.
3. Select the Fiber Amplifier Sensor Communication Unit and click the Advanced Setting Button.
4. Click the Connection Tab.
5. The following dialog box will be displayed. Select User Setup and set the connection path.
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, the
lesser the load on the network. The time required to detect errors, however, is longer with higher values.
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Appendix C