EtherNetIP to Serial Linking Device screenshot

HMS releases first EtherNet/IP linking device for Rockwell PLCs and serial devices

HMS Industrial Networks has released its first product in a new family of EtherNet/IP Linking Devices.

The new Serial EtherNet/IP Linking Device allows users to connect any serial device to a Rockwell ControlLogix or CompactLogix PLC.

The main advantage of the new linking device, says HMS, is the unique integration to Rockwell’s Studio 5000 Logix Designer. 

EthernetIP Linking-Device-Serial-2

The new serial EtherNet/IP Linking Device makes it possible to include any automation device with a serial RS-232/422/485 application interface in an EtherNet/IP-based network architecture.

The company says it supports all kinds of serial protocols including Modbus, DF1, produce/consume, ASCII and custom protocols.

Besides being a more cost-effective alternative to in-chassis communication modules, the distributed EtherNet/IP Linking Device also brings other advantages:

Contrary to an in-chassis module which is physically connected to the PLC, the Linking Device can be mounted close to the connected machine. This means that it is possible to establish a connection via a single Ethernet cable instead of multiple network specific cables. The Linking Devices support ODVA´s Device Level Ring (DLR) for ring topology.

Users access serial protocol configuration through their existing Studio 5000 software. All configuration is made inside Studio 5000 where there is support for Process Variable Data Tags and manual and automatic generation of named and structured Studio 5000 Controller Tags without any required user logic.

Since the Linking Devices are stand-alone (distributed), they do not affect PLC backplane performance (PLC execution time), even when large amount of data is transferred. The PLC simply scans the Linking Device as if it were any other I/O device on the network

“After first communicating about the EtherNet/IP Linking Devices in 2015, we have seen a great interest from the market in these solutions,” says Kevin Knake, executive vice president, HMS Inc.

“The Serial EtherNet/IP Linking Device is the first step in our Linking Devices program and we will add versions for Profibus and Modbus TCP later during 2016. With the Serial Linking Device, we can offer a cost-efficient solution with a very tight integration to Studio 5000 which will give many Rockwell users easy access to serial devices such as variable frequency drives, barcode scanners, process instrumentation and weight controllers.”

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