Universal ARCNET PCI card for 3.3V and 5V signal environment

Key features

  • ARCNET controller COM20022 by Microchip
  • Bit rates 156 kbit/s to 10 Mbit/s
  • Mapping of the COM20022 registers into the I/O and memory space of the PC
  • Automatic adaptation to 3.3 V and 5 V signal environment
  • Coax transceiver protected against invalid bit rate and transmission mode
  • Coax- or galvanically isolated RS-485 interface onboard
  • Switchable termination of the RS-485 interface
  • Compound cards featuring RS485AC, TWP and various optical interfaces available
  • LEDs for ARCNET and PC activity and clearance of coax transceiver
  • Usable in legacy systems owing to DOS support

Order information

Order name Bit rateSignalSocketCable type
SH ARC-PCIu-K2.5 Mbit/s sine dipulse BNCcoaxial cable RG-62
SH ARC-PCIu-LWLSM156.25 kbit/s – 2.5 Mbit/sopticalST/BFOCsingle-mode fibers
SH ARC-PCIu-LWLSMA156.25 kbit/s – 2.5 Mbit/sopticalFSMAmulti-mode fibers
SH ARC-PCIu-LWLST156.25 kbit/s – 2.5 Mbit/sopticalST/BFOCmulti-mode fibers
SH ARC-PCIu-LWLTOS156.25 kbit/s – 2.5 Mbit/sopticalTODX296/TOSLINKmulti-mode fibers
SH ARC-PCIu-LWLVL156.25 kbit/s – 2.5 Mbit/sopticalVersatile Linkplastic optical fibers (POF)
SH ARC-PCIu-R156.25 kbit/s – 10 Mbit/sRS-485/EIA-485DE-9/D-subtwisted pair cable
SH ARC-PCIu-RS485-STB156.25 kbit/s – 10 Mbit/sRS-485/EIA-485screw terminal blocktwisted pair cable
SH ARC-PCIu-RS485AC-BNC2.5–10 Mbit/sRS485ACBNCcoaxial cable RG-62
SH ARC-PCIu-RS485AC-RJ452.5–10 Mbit/sRS485ACRJ45twisted pair cable
SH ARC-PCIu-TWP2.5 Mbit/ssine dipulseRJ45twisted pair cable

Scope of application

The SH ARC-PCIu ARCNET card series has been developed for use in industrial PCs. The cards are available with coaxial interface, galvanically decoupled RS-485 interface or as compound cards featuring various other ARCNET interfaces.
The card supports plug & play, addresses and interrupts will be configured automatically.

When you update to a PC with PCI interface the card can immediately substitute other SOHARD ARCNET network adapters, if your application uses the SOHARD RAW ARCNET driver.

Design & Functionality

The card features the ARCNET controller COM20022 from SMSC which is completely compatible to the COM20020. It supports standardized ARCNET bit rates up to 10 Mbit/s.

4 LEDs indicate the following activities:

  • Coaxial transceiver enabled (back plane mode on/off).
  • Activity on ARCNET receiving channel
  • Activity on ARCNET sending channel
  • PC access to ARCNET controller


  • Compatibility: ANSI/ATA 878.1, PCI 2.2, CE for industrial environment
  • Power requirements: 3.3, 5 & -12 V from PC, max. 4 W
  • Temperature range, operation: 0°C to +55°C
  • Temperature range, storage: -20°C to +85°C
  • Dimensions (w/h/d), mm: 120/107/19 (without connectors and slot bracket)
  • Weight: max 250 g (incl. packaging)