Passing data between ARCNET and Ethernet - a tech update
5 June 2002
Computer/Embedded Technology
Information from Electronic Products Design
We are often asked for a device to communicate between ARCNET and Ethernet. Satisfying these requests usually requires custom engineering.
ARCNET and ethernet work at the data link and physical layers of the OSI model. Thus, no transport protocol is defined for either and each moves data in a different way - giving rise to difficult communication issues.
ARCNET uses 1 byte addressing (specified during device installation), but Ethernet uses a 6 byte address programmed in ROM during manufacture. Also, the maximum Ethernet message size is 1500 bytes, compared to 508 bytes for ARCNET. Since Ethernet messages require no acknowledgement, they can be sent to nonexistent or disabled devices. Thus, Ethernet bridges (or switches) are easy to construct. But ARCNET requires a handshake before transmission and an acknowledgement afterward-which increases reliability, but makes bridge construction difficult.
ARCNET-to-Ethernet routers can offer connectivity if both LANs use the same network protocol such as IP or IPX, but ARCNET installations use neither.
Generic ARCNET-to-Ethernet gateways do not exist and custom units are costly to develop. Special gateways are designed to retransmit Ethernet TCP/IP messages to the ARCNET LAN and to retransmit ARCNET messages to one or more Ethernet devices. The TCP/IP data simply encapsulates the ARCNET packet and destination ID.
The ARCNET user's group (AUG) has proposed a standardardised ARCNET and Ethernet gateway which contemporary controls intends to support. Information in this activity can be found at: www.arcnet.de/download/arcnetIPGateway.pdf
For further information contact Electronic Products Design, 012 665 9700.
Further reading:
First NVMe SSD Built with 8th-gen BiCS FLASH
EBV Electrolink
Computer/Embedded Technology
KIOXIA recently announced the development and prototype demonstration of its new KIOXIA CM9 Series PCIe 5.0 NVMe SSDs, which incorporates CMOS directly Bonded to Array technology.
Read more...
QuecPi smart development board
iCorp Technologies
Computer/Embedded Technology
The QuecPi Alpha smart MOB development board is Quectel’s smart development board based on Qualcomm’s QCS6490 high-performance 64-bit octa-core processor.
Read more...
Eskom announces PV registration extension
Computer/Embedded Technology
The South African Photovoltaic Industry Association has welcomed Eskom’s decision to extend its zero-registration fee policy and free smart meter installation for residential Small-Scale Embedded Generation customers until March 2026.
Read more...
Unlock enhanced wireless performance
Computer/Embedded Technology
Duxbury Networking has introduced Cambium Networks’ Deep Virtual Circuit (Deep VC) technology, a free upgrade for the PMP 450 platform that will transform wireless broadband performance across the country.
Read more...
Computing in industrial environments
Vepac Electronics
Computer/Embedded Technology
The Panasonic Toughbook CF-33/CF33 Tablet is a 12,0-inch fully rugged device with hot-swappable twin batteries and highly configurable capabilities.
Read more...
DDR5 DRAM series
Vepac Electronics
Computer/Embedded Technology
Innodisk has announced its DDR5 6400 DRAM series featuring the industry’s largest 64GB single-module capacity.
Read more...
Generate waveforms at 10 GS/s
Vepac Electronics
Computer/Embedded Technology
New flagship arbitrary waveform generator cards from Spectrum Instrumentation generate waveforms with 2,5 GHz bandwidth and 16-bit vertical resolution.
Read more...
Quad-port 10GBASE-T controller
Rugged Interconnect Technologies
Computer/Embedded Technology
he SN4-DJEMBE, available from Rugged Interconnect, is a networking adaptor card for CompactPCI Serial systems, equipped with four individual controllers for 10GBASE-T.
Read more...
HPE policy management platform
Computer/Embedded Technology
Duxbury Networking has announced the availability of the HPE Aruba ClearPass policy management platform, that enables business and personal devices to connect to an organisational level, in compliance with corporate security policies.
Read more...
IoT gateways
Brandwagon Distribution
Computer/Embedded Technology
IoT Gateways are hardware and software devices that are responsible for collecting data from connected devices, managing communication between devices and the cloud, and processing and analysing the data before sending it to the cloud for further analysis.
Read more...
printer friendly version