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8 MODBUS
8.1 Modbus Device List
The EMB Hub automatically searches for Modbus devices on the RS485 serial loop. The Modbus Device
List page will show a listing of all the currently detected or configured devices the EMB Hub has found. The
device list will show the Modbus address number, status (OK, Error, Alarm, Unconfigured), the device name
(user specified) and the device identification string.
Click on the Modbus address number for any of the devices for specific device details
Note: not all Modbus devices have built in driver support in the EMB Hub. If a device appears in the list
with “Unknown” in the status column, you may need to upgrade the firmware on the EMB Hub to access
the device. At the bottom of the device list page under the Type column, a link is shown that will show all
the Modbus devices with built in driver support provided in the firmware. Use the System/Firmware update
page to check for newer versions of the firmware. The leviton.com website FAQ also has a list of supported
Modbus devices. Modbus devices that are not supported by built in drivers may be configured using the
Modbus Framework feature in the EMB Hub.
At the bottom of the device list, there is an option to allow you to rename all the devices listed. This is useful
for initial deployments. There is also a troubleshooting link that will look for common configuration problems
and alert you to the appropriate solution.
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