Dear Customer, In Industrial networking, there has been a long history of technologies battling for dominance. There is a long list of losers, relegated to the bone yard of obsolete technology. And a few winners, like Ethernet and TCP/IPand ARCNET > ׮ . While ARCNET did not achieve the vast popularity of Ethernet, still after two decades it continues to be used in tens of thousands of installations. Today, ARCNET is still being designed into new products. Why? Because as a high-speed, long- distance Ethernet alternative, it is inexpensive, well-supported, provides ultra-reliable performance and...

Ever wonder why ARCNET remains a time-proven technology? This catalog provides the answer to the question. Imagine yourself as a designer or engineer working on an ARCNET project and you encounter some difficulty. As a recognized name in ARCNET, Contemporary Controls publishes this ideal resource to help in taking your project from start to finishΗadding to a line or even upgrading an entire system. Its both a tutorial and a product guide. All our Hubs, Network Interface Modules (NIMs) and Analyzers are designed to allow users to find solutions for lower cost and reduced downtime. And our skilled...

RoHS Compliance PlanAvailable for Our Customers > It is a fact that small amounts of lead have been used in electronic products for years. And todays environment movement is helping individuals understand the dangers of such hazardous materials and how it affects our quality of life issues. Contemporary Controls is concerned about the environment. They are taking action with regards to the new European Union guidelines on hazardous materials used in electronic products. The European Parliament and the Council of the European Union (EU) has released directive 2002/95/EC on restricting the use...

Simple Microprocessor Bus Interface Reliable Message Delivery Variable Data Rate Up to 10 Mbps ARCNET has other unique features that facilitate embedded design development. The COM20020 family of ARCNET controllers were designed for a simple eight-bit bus microprocessor interface. The complete communication protocol is handled by the ARCNET controller. This includes token-passing, network configuration and error handling. Unlike Ethernet, ARCNET has built-in flow control. ARCNET 6 Another problem with Ethernet is the requirement to add a transport-layer protocol. Of course, the most popular transport-layer...

Features Deterministic Performance՗Users Can Calculate the Worst Case Node-to-Node Message Time Logical Ring՗Nodes Automatically Find Their Neighbor to Create A Ring Automatic Reconfiguration՗A New Node Joins the Ring Automatically Without Software Intervention Broadcast and Directed Messages ՕMulti-Master with Automatic Token Generation Cabling Options՗Coaxial, Fiber Optic, EIA-485 Twisted-Pair High Speed՗Standard 2.5 Mbps, Optionally 19 kbps to 10 Mbps Low-Protocol Overhead՗3 or 4 BytesGood Usage of Available Bandwidth וVariable Packet Size0 to 507 Bytes וBit Rate Scalable up to 10 MbpsGrows...

Regulatory Requirements Simply embracing ARCNET standards does not remove the requirement to conform to various agency regulations not required in the office. Seldom does office-grade ARCNET equipment meet the unique requirements of industrial automation or even building automation. ARC Control products are designed and tested to the higher electromagnetic compatibility (EMC) immunity standards required for industrial equipment. Some products are UL 1950 listed for use in information technology equipment. Others are UL 864 recognized for smoke and fire-protective applications. All the products...

-FOG Fiber Optic Glass (Multimode) (ST or SMA Connectors) -CXS Coaxial Star (BNC Connector) Fiber optic cable can be supported by ARCNET as well. The -FOG transceiver identifies support for a duplex 850 nm multimode link. One port is used for receive and one for transmit. Computer Bus Structures Transceiver Options -CXB Coaxial Bus (BNC Connector) This is the original ARCNET transceiver very much in use today. Operating at 2.5 Mbps, this transceiver is intended for either point-to-point, star or distributed star topologies. A BNC connector completes the connection to RG-62/u coaxial cable. A...

-485 Backplane DC-coupled EIA-485 (RJ-11, RJ-45 or Screw Connectors) -485D Non-backplane DC-coupled EIA-485 (RJ-11, RJ-45 or Screw Connectors) -4000 Backplane AC-coupled EIA-485 (RJ-11, RJ-45 or Screw Connectors) -485X Non-backplane AC-coupled EIA-485 (RJ-11, RJ-45 or Screw Connectors) With the introduction of the COM20020 family of ARCNET controllers came support for the popular EIA-485 physical layer. The COM20020 family will operate in either backplane or non-backplane mode. With backplane mode, a simple interface to EIA-485 transceivers is possible. Dipulse signaling is not used in backplane...

C BNC Coaxial Connectorח"Baby" NC connectors are used on coaxial cable transceivers such as the -CXS and -CXB. RG-62/u cable is generally used with this connector. Connectors ST ST Fiber Optic Connectorח"Straight Tip" fiber optic connector commonly used in the industry. This quarter-turn connector prevents the possibility of over tightening. Depending upon the transceiver selected, connector options vary even within a transceiver type. A selection guide has been provided to assist in determining what connector is available. Connector details are included in the technical portion of the catalog....

T he CPCI22 Series links CompactPCI bus compatible computers with the ARCNET Local Area Network. The combination of a low-profile, 3U form factor, hot-swap capability, and solid performance can be found in this product. These features make it well-suited for use in industrial and telecommunications applications. The CPCI22 bus allows for jumperless configuration and Plug and Play (PnP) operation. Hot-swapping is an essential benefit for operators of high-availability systems. The module functions with either an NDIS driver or with a null stack driver in a Windows environment. This network interface...