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TC6142-HZ(HIGH IMPEDANCE)

THOMAS-CONRAD CORPORATION

TC6142-HZ(HIGH IMPEDANCE)

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Star

Linear Bus

Wiring Type

RG62/U 93ohm coaxial

Boot ROM

Available

NODE ADDRESS

Node

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

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)

INTERRUPT REQUEST

IRQ

JP1

JP2

JP3

JP4

JP5

2

Closed

Open

Open

Open

Open

 

3

Open

Closed

Open

Open

Open

 

4

Open

Open

Closed

Open

Open

 

5

Open

Open

Open

Closed

Open

 

7

Open

Open

Open

Open

Closed

CABLE LENGTH AND RESPONSE/RECONFIGURATION TIMEOUTS

Cable Length

Response Time

Reconfiguration

JP6

JP7

< 20,000 feet

74.7Ás

840ms

Open

Open

 

> 20,000 feet

283.4Ás

1680ms

Closed

Open

 

> 20,000 feet

561.8Ás

1680ms

Open

Closed

 

> 20,000 feet

1118.6Ás

1680ms

Closed

Closed

Note: All NICs on the network must have this option set the same.

BASE MEMORY ADDRESS

Address

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

D000h

Off

Off

On

Off

On

On

 

C000h

Off

Off

On

On

On

On

 

C400h

Off

Off

On

On

On

Off

 

C800h

Off

Off

On

On

Off

On

 

CC00h

Off

Off

On

On

Off

Off

 

D400h

Off

Off

On

Off

On

Off

 

D800h

Off

Off

On

Off

Off

On

 

DC00h

Off

Off

On

Off

Off

Off

COMPATIBLY MODE

Mode

SW1/8

Enhanced mode

On

 

Compatible mode

Off

Note:Enhanced mode optimizes performance and minimizes conflicts of your hardware, by using a Thomas-Conrad ARCNET drivers. It is also not necessary to set the I/O address. In compatible mode the adapter can use most existing ARCNET drivers.

I/O BASE ADDRESS

I/O

SW3/3

SW3/4

SW3/5

SW3/6

SW3/7

SW3/8

2E0h

Off

On

Off

Off

Off

On

 

2F0h

Off

On

Off

Off

Off

Off

 

300h

Off

Off

On

On

On

On

 

310h

Off

Off

On

On

On

Off

 

320h

Off

Off

On

On

Off

On

 

330h

Off

Off

On

On

Off

Off

 

340h

Off

Off

On

Off

On

On

 

350h

Off

Off

On

Off

On

Off

 

360h

Off

Off

On

Off

Off

On

 

370h

Off

Off

On

Off

Off

Off

 

380h

Off

Off

Off

On

On

On

 

390h

Off

Off

Off

On

On

Off

 

3A0h

Off

Off

Off

On

Off

On

 

3B0h

Off

Off

Off

On

Off

Off

 

3C0h

Off

Off

Off

Off

On

On

 

3D0h

Off

Off

Off

Off

On

Off

 

3E0h

Off

Off

Off

Off

Off

On

 

3F0h

Off

Off

Off

Off

Off

Off

FACTORY CONFIGURED SETTINGS - DO NOT ALTER

Switch

Setting

SW1/7

Unused

SW3/1

Unused

SW3/2

Unused