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 different ARCNET interfaces for connection to ARCNET networks with various signaling methods (sine dipulse, RS-485/EIA-485 (AC coupled) and optical) via coaxial, twisted pair or fiber optic cables.
When you update to a PC with PCI interface the card can immediately substitute other SOHARD ARCNET network adapters, if your application is using the SOHARD RAW ARCNET interface and the corresponding driver.
Design & Functionality
The card features the ARCNET controller COM20022 from SMSC which is completely compatible with the COM20020. It supports standardized bit rates up to 10 Mbit/s. The SH ARC-PCIu is a 32 bit card conforming to PCI 2.2. The card is a plug and play device. Configuration of addresses and interrupts is simple. It may be addressed via I/O addresses or via memory.
4 LEDs indicate the following activities:
• Coaxial transceiver active/inactive (back plane mode on/off).
• Activity on ARCNET receiving channel
• Activity on ARCNET sending channel
• PC access to ARCNET module
For technical information on the ARCNET interfaces of SH ARC-PCIu product family, please have a look at our product datasheet “ARCNET Interface Modules”.
Key features
• PCI 2.2 compatible
• 32 bit bus
• Mapping of the COM20022 registers into the I/O and memory space of the PC
• Automatic adaptation to 3.3V and 5V signal environment
• Usable in legacy systems owing to DOS support
• Fast controller access via Advanced-Memory Mode
• Coaxial transceiver protected against invalid bit rate and transmission mode
• Switchable termination of the RS-485 interface
• Compound cards featuring RS485AC, TWP and various optic fiber interfaces are also available
