2. Open the Field Communicator application.
3. If the Trex unit does not automatically find the device, tap Fieldbus on the Connect -
Select screen.
4. From the Device List, tap the desired device.
The device menu is displayed.
5. To disconnect a device, tap Menu > Disconnect, or remove the lead set.
Related information
Wiring diagrams for FOUNDATION fieldbus devices and the Field Communicator
application
Disconnect a device
3.21 Online FOUNDATION fieldbus devices
3.21.1 Limitations for commissioned devices
The Trex unit prevents you from completing some tasks on commissioned devices that
could adversely affect the control system. You cannot do the following on a commissioned
device:
• Schedule blocks
• Change the link master configuration
• Change the block tag
• Change the device tag
• Change the device address
3.21.2 Device blocks
Many FOUNDATION fieldbus devices organize the device parameters into separate blocks.
The Online menu displays block information for the connected FOUNDATION fieldbus
device. Devices may have a resource and transducer block, and other device-specific
blocks. (Other devices may display their parameters using a device dashboard.)
Note
If you previously instantiated a block in a device, the Trex unit may not display that block. The Trex
unit does not support block instantiation.
Field Communicator application
104 User Guide