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ARCNET PC500

STANDARD MICROSYSTEMS CORPORATION

ARCNET PC500

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

16-bit ISA

Topology

Star

Linear Bus

Wiring Type

RG-62A/U 93ohm coaxial

Boot ROM

Not available

NODE ADDRESS

Node

SW3/1

SW3/2

SW3/3

SW3/4

SW3/5

SW3/6

SW3/7

SW3/8

0

-

-

-

-

-

-

-

-

1

Off

On

On

On

On

On

On

On

2

On

Off

On

On

On

On

On

On

3

Off

Off

On

On

On

On

On

On

4

On

On

Off

On

On

On

On

On

251

Off

Off

On

Off

Off

Off

Off

Off

252

On

On

Off

Off

Off

Off

Off

Off

253

Off

On

Off

Off

Off

Off

Off

Off

254

On

Off

Off

Off

Off

Off

Off

Off

255

Off

Off

Off

Off

Off

Off

Off

Off

Note: Node address 0 is used for messaging between nodes and must not be used.

A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch 1 is the Least Significant Bit and switch 8 is the Most Significant Bit. The switches have the following decimal values: switch 1=1, 2=2, 3=4, 4=8, 5=16, 6=32, 7=64, 8=128. Turn off the switches and add the values of the off switches to obtain the correct node address. (On=0, Off=1)

RESPONSE & RECONFIGURATION TIMEOUTS

Response Time

Idle Time

Reconfig. Time

JP2A

JP2B

78Ás

86Ás

840ms

Closed

Closed

 

285Ás

316Ás

1680ms

Closed

Open

 

563Ás

624Ás

1680ms

Open

Closed

 

1190Ás

1237Ás

1680ms

Open

Open

TOPOLOGY CONFIGURATION

Topology

JP6

Star

Closed

Linear Bus

Open

I/O BASE ADDRESS

Address

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

300h

On

On

On

On

Off

Off

 

200h

On

On

On

On

On

Off

 

210h

Off

On

On

On

On

Off

 

220h

On

Off

On

On

On

Off

 

230h

Off

Off

On

On

On

Off

 

240h

On

On

Off

On

On

Off

 

250h

Off

On

Off

On

On

Off

 

260h

On

Off

Off

On

On

Off

 

270h

Off

Off

Off

On

On

Off

 

280h

On

On

On

Off

On

Off

 

290h

Off

On

On

Off

On

Off

 

2A0h

On

Off

On

Off

On

Off

 

2B0h

Off

Off

On

Off

On

Off

 

2C0h

On

On

Off

Off

On

Off

 

2D0h

Off

On

Off

Off

On

Off

 

2E0h

On

Off

Off

Off

On

Off

 

2F0h

Off

Off

Off

Off

On

Off

 

310h

Off

On

On

On

Off

Off

 

320h

On

Off

On

On

Off

Off

 

330h

Off

Off

On

On

Off

Off

 

340h

On

On

Off

On

Off

Off

 

350h

Off

On

Off

On

Off

Off

 

360h

On

Off

Off

On

Off

Off

 

370h

Off

Off

Off

On

Off

Off

 

380h

On

On

On

Off

Off

Off

 

390h

Off

On

On

Off

Off

Off

 

3A0h

On

Off

On

Off

Off

Off

 

3B0h

Off

Off

On

Off

Off

Off

 

3C0h

On

On

Off

Off

Off

Off

 

3D0h

Off

On

Off

Off

Off

Off

 

3E0h

On

Off

Off

Off

Off

Off

 

3F0h

Off

Off

Off

Off

Off

Off

INTERRUPT REQUEST

IRQ

SW1/7

SW1/8

SW1/9

SW1/10

2/9

Off

On

On

Off

3

Off

Off

On

On

4

On

On

Off

On

5

Off

On

Off

On

7

Off

Off

Off

On

10

On

Off

On

Off

11

Off

Off

On

Off

12

On

On

Off

Off

FACTORY CONFIGURED SETTINGS

Switch

Setting

SW2/1

On

SW2/2

On

SW2/3

Off

SW2/4

On

SW2/5

On

SW2/6

On

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Red

On

Card is being accessed by host computer

LED1

Red

Off

Card is not being accessed by host computer

LED2

Green

On

Data is being transmitted/received

LED2

Green

Off

Data is not being transmitted/received

LED2

Green

Blinking

Network is reconfiguring