Modbus Interface

Modbus interfaces are imported under the following path: Field Networks > Modbus Network in Management View of System Browser.

Before importing Modbus interfaces, the Modbus network must be available.

In System Browser, each Modbus network contains a set of Modbus interfaces and each of them contains the devices and points attached to that interface.

Communication Interface Expander

In Engineering mode, when you select a Modbus interface in System Browser its settings display in the Communication Interface expander in the Modbus tab. You can save the data or delete the Modbus interface.

Modbus Toolbar
Icon	Name	Description
	Save data	Saves any changes.
	Delete	Deletes the current object.

Communication Interface Expander Fields
Name	Description
Interface ID	Displays the interface instance number (read only).
Interface name	Name of the interface. (read only).
TCP port	Displays the TCP port number assigned to the device in the network. You can modify this field.
IP address	Displays the hardware address of a device connected to a network that uses Internet Protocol (IP) for communication. You can modify this field.

Communication Interface Properties
Property Name	Description
Summary Status	Displays the summary status
Active	Displays the connection status of the device. It can have two values: True – The device is connected (Default value) False – The device is not connected Set this property to False to disconnect the device.
Frame Coding	Type of FrameCoding supported by the device. It can have either of the following values: ASCII, ,RTU, or TCP Default value is TCP, however, you can set a different value as per the device specification.
Connection State	Connection state of the device.
Driver Number	Driver ID to which the connection object is linked.
Hosts and Ports	Host ID and port number of the device.
Offset	This data point element allows for defining the offset. Default value is 0 but you can set a different value.
Interface ID	Displays the interface ID
Transaction Timeout	The timeout period between a request and response. This period is specified in milliseconds (100-100000). In the event of a timeout, the request is lost and the connection is closed. The connection can only be re-established at the next request.
Slave ID	Slave ID of the communication interface.