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  1. Open the SmartServer Configuration page as described in Accessing the SmartServer IoT Configuration PageThe Network tab appears as the default SmartServer IoT Configuration page. Once the network settings are configured for the SmartServer system, then the System tab will appear as the default.
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    SmartServer IoT Network tab

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    SmartServer IoT System tab


    For SmartServer Pi, open the SmartServer Configuration page as described in Accessing the SmartServer Pi Configuration Page. The left-side Configuration tab that appears depends on your cache data. As needed, click the SmartServer IoT tab. The System tab (top) will appear as the default as shown below.

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    SmartServer Pi System tab


  2. Click the Modbus tab. The Modbus driver is enabled by default for SmartServer IoT and disabled by default for SmartServer Pi.
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    SmartServer IoT Modbus tab
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    SmartServer IoT Pi Modbus tab


  3. Set the Modbus driver Enabled  option as needed.

  4. Click Update to save your configuration.

  5. Click the RS-485 tab. 
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    SmartServer IoT RS-485 tab
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    SmartServer Pi RS-485 tab


  6. Select Modbus for the Bus Type for either RS-485 1 or RS-485 2. Modbus can only be configured on one RS-485 port (default is port 1, RS-485 1).

  7. Set the bit rate (labeled Baud Rate), parity, and stop bits that you use on your Modbus RTU channel. The bit rate, parity, and stop bits must be the same for all devices on the Modbus RTU channel.  The default settings are 19200 bps, no parity, and 2 stop bits.

  8. Click Update to save your configuration.

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