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The General configuration page will appear once a new Serial Data Server device has been added successfully. An additional configuration is below the General configuration section and will differ based on the device protocol selected.

Modbus RTU

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Item

Description

Device Name

Allows the user to assign a name for the I/O Device.

Device Protocol

Select the type of target device. This also selects the driver used to communicate with the device.

Serial Port

Assigns the local (Xpanel) COM port to use Modbus RTU Slave.

Comm Type

Determine the communication type used (i.e., RS-485 or RS-422).

Baudrate

Configures the baud rate (300bps – 256230,000bps400bps).

Parity

Determines whether to use an even, odd, or no parity bit for error checking.

Data Bits

Determines the number of data bits per packet. You can select between 5 and 8 bits. If the data contains Korean characters, please select 8 bits to avoid errors.

Stop Bits

Determines the number of stop bits between frames.

Flow Control

Allows the user to enable or disable flow control. With this option enabled, the MODBUS Master will wait for an acknowledgement signal from the target device before sending another command

Stop Bits

Determines the number of stop bits between frames.

Unit ID

Allows the user to set the Modbus Address of the slave.

String Encoding

Specifies the encoding method for reading and writing string values stored on the device. This option can be overridden for individual tags in the Edit Tag menu.

String Encoding Method

When an invalid character is encountered, the gateway will do one of the following:

  • Replace the character with “?.”

  • Skip the character and continue with the next one.

  • Stop the string and truncate any remaining characters. This option can be overridden for individual tags in the Edit Tag menu.