Emerson AMS Trex Device Communicator User Manual page 113

User Guide
3.21.7
3.21.8
User Guide
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3. Tap Physical Device Tag.
4. Tap OK when prompted that the device will be restarted after the parameter is
changed.
5. Tap Yes or No when asked if the device is commissioned.
You cannot make changes if the device is commissioned.
6. Enter a new tag, and tap OK.
The Trex unit disconnects from the device.
7. Tap OK on the message that indicates the device has been disconnected from the
Trex unit.
The Device List appears and displays the device with the new tag.
8. Tap the device to reconnect to it.
Guidelines for changing the device address
Note
The physical address of a FOUNDATION fieldbus device is read-only when the device is
commissioned or a host/linking device is detected on the fieldbus segment. To change the
device address, use the host system or remove the device from the fieldbus segment and
connect it directly to the Trex unit.
The host control system can assign an address to a device that is connected to a fieldbus
segment. When you assign device addresses, follow the guidelines below:
• Addresses below 16 are not available.
• Addresses between 16 and 19 are usually reserved for host systems. A device should
not be assigned in this address range.
• Valid device addresses are between 20 and 247.
• Addresses between 248 and 251 are temporary addresses. Devices without a tag or
address appear on the fieldbus segment at these addresses.
• Addresses between 252 and 255 are reserved for visitors, such as the Trex unit.
Change the device address for a FOUNDATION fieldbus
device
Note
The physical address of a FOUNDATION fieldbus device is read-only when the device is
commissioned or a host/linking device is detected on the fieldbus segment. To change the
device address, use the host system or remove the device from the fieldbus segment and
connect it directly to the Trex unit.
Procedure
1. Connect to the FOUNDATION fieldbus device.
2. Tap Service Tools.
3. Tap Device Node Address.
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September 2021
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