Adapting to Change

The Number of Network Protocols Is Not Decreasing, Necessitating Gateways and Adapters That Can Help Devices Communicate With One Another

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In our latest industrial Ethernet survey, we found that our readers use a wide array of protocols. EtherNet/IP and Modbus TCP/IP figured most prominently at 70% and 62%, respectively; but standard Ethernet and Profinet were also high on the list at 28% and 21%. Add to those the currently lesser-used EtherCat, Foundation fieldbus HSE, Powerlink and Sercos III, and it’s no wonder users need devices that will help their various protocols communicate with one another.

Wireless protocols also should be figured into the mix. Of those surveyed, 37% planned to deploy wireless Ethernet within the next year, with usage expectations spread between 802.11b/g, 802.11n, WirelessHART, 802.11a, and proprietary protocols.

In a separate survey conducted this year about wireless networking, respondents told us that their wireless networks need to communicate with a wide range of Ethernet variants, plus Modbus, Profibus and Foundation fieldbus.

 Etehrnet slave

One for Many
EL67xx EtherCat master and slave terminals provide a direct interface to EtherCat I/O nodes for all Profibus (EL6731), DeviceNet (EL6752) and CANopen (EL6751) devices. The terminals channel each fieldbus signal type through the EtherCat protocol with full availability of the respective network’s features and functions. PCI cards in PCs are no longer required.
Beckhoff Automation
952/890-0000
www.beckhoffautomation.com

 Ethernet & PCI card

All in One
FL mGuard products provide stateful firewall, router and VPN functionalities in a single device in RS DIN rail-mount style for industrial Ethernet and PCI card versions for integration into industrial computers. For applications that need a modem, but might later need to migrate to a VPN connection, it includes an optional integrated modem that can serve as a backup connection.
Phoenix Contact
800/586-5525
www.phoenixcon.com/mguard

 Gateways Simplify Safety
ENX AS-Interface Gateways support Modbus TCP and EtherNet/IP for communication with standard and safety networks in a single gateway with diagnostics retrieval. The gateways handle 992 I/O asynchronous to the Ethernet traffic and scan every AS-i node in 150 µs, which enables up to 62 safety e-stops, magnetic switches, and safe outputs in one safety program.
Pepperl+Fuchs
330/486-0001
www.pepperl-fuchs.us
 Master & slave protocols

Tap in to Protocols
netTAP 100 has master and slave protocols for CANopen, DeviceNet, Profibus, CC-Link, EtherCat, EtherNet/IP, Modbus TCP, Powerlink, Profinet, Sercos III, MB/RTU, MB ASCII RS-232, RS-422, and RS-485 for Real-Time I/O data exchange. The configuration software for the master is an enhanced version of Sycon.net, an FDT/DTM-based tool. Development tools allow third parties to develop custom protocol gateways using any of the stacks and gateway applications to their own protocol.
Hilscher North America
630/505-5301
www.hilscher.com

 Ethernet Gateway

CAN DO EThernet
Anybus X-gateway CANopen enables transfer of I/O data between devices on EtherNet/IP and CANopen. The 24 V, standalone gateway mounts to a standard DIN rail and functions as a slave on EtherNet/IP network and as a master on the CANopen side. CANopen master functionality is configured with a Windows-based configuration tool, after which it passes up to 510 bytes of I/O data transparently.
HMS Networks
312/829-0601
www.anybus.com

 Ethernet Gateway

Gateway to Modbus
EKI-1221D and EKI-1222D gateways provide transparent connectivity between Modbus serial devices and Ethernet-based Modbus TCP equipment. They have built-in Ethernet switches for cascading/daisy-chain connectivity that offers flexible cabling. Cascading connections support Ethernet auto-bypass to prevent accidental power failure in the event one of the Modbus gateways unexpectedly shuts down.
Advantech Industrial Automation
800/205-7940
www.advantech.com/ea

 Safety Gateways

Safety via Gateway
Bihl+Wiedemann Gen. 2 safety gateways integrate AS-i safety monitors and slaves, allowing two Safety at Work networks and up to 16 release circuits to be monitored through each gateway. Two independent AS-i networks can be powered by a single power supply, providing diagnostic data to the higher-level controller. The gateways are available for EtherNet/IP,  Modbus TCP, Profinet, Profibus-DP and EtherCat.
Turck
800/544-7769
www.turck.us

 Ethernet Ports

EtherNet/IP to DF1

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