Using Anybus Communicator as external network interface for a Barcode Scanner

Barcode Scanners, that do not have an integrated network interface, can easily be connected to fieldbus and industrial Ethernet networks via their RS-232 interface and the Anybus Communicator

Flexible communication is a key successes factor for almost any barcode scanner. While complex sensors typically offer powerful integrated network interfaces, small and simple scanners only support serial communication via RS-232/485 interfaces. In these cases, the Anybus Communicator can be used as an external interface to integrate the Scanner into almost any fieldbus or industrial Ethernet network.
The Anybus Communicator is connected to the RS-232/485 interface of the Scanner and translates the serial data stream from the Scanner into a fieldbus or industrial Ethernet protocol. The Communicator completely handles the protocol conversation and represents the Scanner as a slave/adapter on the network.  For the central PLC (master) the Scanner functions as a standard node on the network with slave functionality.  

The PLC reads the scanned data from the Scanner as input data and transfers commands or parameters to the Scanner as output data via the network. Typically, the Scanner packs the scanned data into a frame with a start character at the beginning and a stop character and a checksum at the End. Thanks to the intelligent conversion features of the Anybus Communicator, these leading and trailing information can be filtered out, so that only the net scan data is transmitted over the network. The Communicator can also used to filter off telegrams with wrong checksum or invalid frame lengths. The Configuration is made with the ABC config tool, which is available from the downloads section of this website.

As the Anybus Communicator is available for almost any industrial network, the Scanner can be connected to many different networks with the same connectivity solution without additional development efforts.
Depending on the complexity of the protocol conversation, the internal processing time inside the Anybus Communicator is in the range of 5 – 20 ms. Accordingly, the usage of the Anybus Communicator does not add substantial delays into the Scan process of a typical barcode or RFID Scanner. Read more