Contemporary-control-systems PC10420 Adapters Manual de usuario descargar pdf

PC10420

ARCNET® Network Interface Modules for PC/104 Bus Computers

INSTALLATION GUIDE

INTRODUCTION

The PC10420 series of ARCNET network interface modules (NIMs) links

PC/104 compatible computers with the ARCNET local area network (LAN).

ARCNET is classified as a token-bus LAN operating at a nominal 2.5 Mbps

while supporting 255 nodes. Interfacing ARCNET to a host computer

usually requires a NIM which plugs into the host computer’s bus.

The PC10420 incorporates the newer COM20020 ARCNET controller chip

with enhanced features over the earlier generation ARCNET chips. New

performance and integration enhancements include command chaining

operation and an internal 2K x 8 RAM buffer. There is no requirement for

wait-state arbitration.

Each PC10420 module has two LEDs on the board. The green LED

indicates that the module is receiving data on the network and the yellow

LED indicates bus access to the module. The PC10420 also has a piano

style DIP switch so that node addresses can be easily reassigned without

removing the module.

There are several versions of the PC10420 ARCNET NIM. The

PC10420-CXS supports coaxial star configurations requiring external

active or passive hubs. The PC10420-CXB supports coaxial bus

configuration usually requiring no hubs. Other versions include the

PC10420-FOG which supports fiber optic cable with either ST or SMA

connectors. The PC10420-TPB supports twisted-pair bus cabling using

RJ-11 and screw terminal connectors. There are various versions that

support EIA-485 communication each using RJ-11 and screw terminal

connectors.

On some models, operation up to 5.0 Mbps is possible. These models are

identified with a /5 designation.

1 2 3 4 5 6 ... 15 16

Indice de contenidos

Pagina 1 - INSTALLATION GUIDE

PC10420ARCNET® Network Interface Modules for PC/104 Bus ComputersINSTALLATION GUIDEINTRODUCTIONThe PC10420 series of ARCNET network interface modules

Pagina 2 - Power Requirements

TD874100-0IH10do not set the COM20020 to backplane mode for EIA-485 communication as recommended in SMSC’sapplication note and data sheet since Contem

Pagina 3

TD874100-0IH11Incorporating a resistance value less than 120 ohms is not recommendedsince it may excessively load the EIA-485 transceivers.BiasIn addi

Pagina 4 - I/O Base Addressing

TD874100-0IH12Segments of -485D connected NIMs can be extended through the use ofactive hubs. Select a MOD HUB expansion module with a -485Dcompatible

Pagina 5

The cabling rules of the -485X are similar to the -485D. Dual RJ-11connectors and one three-position screw terminal connector are used in eachNIM. Wir

Pagina 6

TD874100-0IH14NEED MORE HELP INSTALLING THIS PRODUCT?More information can be found on our web site at www.ccontrols.com. When contacting one of our o

Pagina 7 - -CXB Coaxial Bus

[This page was deliberately left blank.] TD874100-0IH15

Pagina 8 - -FOG Fiber Optic (-ST, -SMA)

[This page was deliberately left blank.] TD874100-0IH16

Pagina 9 - -TPB Twisted-Pair Bus

TD874100-0IH2SPECIFICATIONSEnvironmentalOperating temperature: 0°C to +60°CStorage temperature: –40°C to +85°CData RatesPC10420* 2.5 Mbps, 1.25 Mbps,

Pagina 10 - TD874100-0IH

INSTALLATIONPassive P2 ConnectorAlthough the PC10420 is an eight-bit module, the PC10420 does provide aP2 connector used for 16-bit applications. The

Pagina 11

TD874100-0IH4 I/O Read WriteAddress Register RegisterBase + 0 Status Interrupt MarkBase + 1 Diagnostic Status CommandBase + 2 Address Pointer High Add

Pagina 12 - -485X AC Coupled EIA-485

TD874100-0IH5A9 A8 A7 A6 A5 A4 I/O ADDRESSn 1F0nnnnn 200nn n n 210nn n n 220nn n 230nn n n 240nn n 250nn n 260nn 270n nnn 280nnn 290nn n 2A0nn 2B0nnn2

Pagina 13

TD874100-0IH6InterruptsInterrupts can be invoked at jumper location E1 which consists of a series ofrows of two posts each. Each row is labeled with a

Pagina 14 - Warranty

TD874100-0IH7-CXS Coaxial StarIn a coaxial star system, NIMs and hubs are interconnected in a point-to-point fashion using coaxial cable. A NIM can c

Pagina 15

high impedance type. Do not terminate the end which attaches to the hubport since a -CXS port effectively terminates the end of a bus segment.Simply r

Pagina 16

TD874100-0IH9strength divided by the light receiver sensitivity expressed in dB. The linkloss budget, which includes losses due to cable and connecto