KATRON TECHNOLOGIES, INC.
ARC-220
NIC Type | ARCnet |
Transfer Rate | 2.5Mbps |
Data Bus | 16-bit ISA |
Topology | Star Linear bus |
Wiring Type | RG-62A/U 93ohm coaxial Unshielded twisted pair |
Boot ROM | Available |

NODE ADDRESS | ||||||||
Node | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
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) | ||||||||
CONNECTIONS | |
Function | Location |
External LED1 (See LED table for LED1 indications) | JP1 |
External LED2 (See LED table for LED2 indications) | JP2 |
BOOT ROM | ||
Setting | JP3 | |
| » | Disabled | Pins 2 & 3 closed |
Enabled | Pins 1 & 2 closed | |
INTERRUPT REQUEST | ||||||||
IRQ | JP4A | JP4B | JP4C | JP4D | JP4E | JP4F | JP4G | |
| » | 2/9 | Closed | Open | Open | Open | Open | Open | Open |
3 | Open | Closed | Open | Open | Open | Open | Open | |
4 | Open | Open | Closed | Open | Open | Open | Open | |
5 | Open | Open | Open | Closed | Open | Open | Open | |
10 | Open | Open | Open | Open | Closed | Open | Open | |
11 | Open | Open | Open | Closed | Open | Closed | Open | |
12 | Open | Open | Open | Closed | Open | Open | Closed | |
CABLE TYPE | |
Type | JP5A - JP5C |
Unshielded twisted pair | Pins 1 & 2 closed |
AUI transceiver via DB-15 port | Pins 2 & 3 closed |
ONBOARD TERMINATOR | |||
Setting | JP6 | ||
| » | Disabled | Pins 1 & 2 closed | |
Enabled | Pins 2 & 3 closed | ||
Notes:If the card is on either end of a linear bus network segment, the onboard terminator can be instead of using an external terminator. | |||
I/O BASE ADDRESS | ||||
Address | JP7F | JP7G | JP7H | |
260-26Fh | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed | |
290-29Fh | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 2 & 3 closed | |
| » | 2E0-2EFh | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 2 & 3 closed |
2F0-2FFh | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 2 & 3 closed | |
300-30Fh | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | |
350-35Fh | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | |
380-38Fh | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | |
3E0-3EFh | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | |
BASE MEMORY ADDRESS & BOOT ROM ADDRESS | |||||||
Base Address | Boot ROM Address | JP7A | JP7B | JP7C | JP7D | JP7E | |
C0000-C07FFh | C2000-C3FFFh | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 2&3 | |
C0800-C0FFFh | C2000-C3FFFh | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 2&3 | |
C1000-C17FFh | C2000-C3FFFh | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 2&3 | |
C1800-C1FFFh | C2000-C3FFFh | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 2&3 | |
C4000-C47FFh | C6000-C7FFFh | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 2&3 | |
C4800-C4FFFh | C6000-C7FFFh | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 2&3 | |
C5000-C57FFh | C6000-C7FFFh | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 2&3 | |
C5800-C5FFFh | C6000-C7FFFh | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 2&3 | |
CC000-CC7FFh | CE000-CFFFFh | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 2&3 | |
CC800-CCFFFh | CE000-CFFFFh | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 2&3 | |
CD000-CD7FFh | CE000-CFFFFh | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 2&3 | |
CD800-CDFFFh | CE000-CFFFFh | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 2&3 | |
| » | D0000-D07FFh | D2000-D3FFFh | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 2&3 |
D0800-D0FFFh | D2000-D3FFFh | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 2&3 | |
D1000-D17FFh | D2000-D3FFFh | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 2&3 | |
D1800-D1FFFh | D2000-D3FFFh | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 2&3 | |
D4000-D47FFh | D6000-D7FFFh | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 1&2 | |
D4800-D4FFFh | D6000-D7FFFh | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 1&2 | |
D5000-D57FFh | D6000-D7FFFh | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 1&2 | |
D5800 D5FFFh | D6000-D7FFFh | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 1&2 | |
D8000-D87FFh | DA000-DBFFFh | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 1&2 | |
D8800-D8FFFh | DA000-DBFFFh | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 1&2 | |
D9000-D97FFh | DA000-DBFFFh | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 1&2 | |
D9800-D9FFFh | DA000-DBFFFh | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 1&2 | |
DC000-DC7FFh | DE000-DFFFFh | Pins 2&3 | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 1&2 | |
DC800-DCFFFh | DE000-DFFFFh | Pins 1&2 | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 1&2 | |
DD000-DD7FFh | DE000-DFFFFh | Pins 2&3 | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 1&2 | |
DD800-DDFFFh | DE000-DFFFFh | Pins 1&2 | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 1&2 | |
E0000-E07FFh | E2000-E3FFFh | Pins 2&3 | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 1&2 | |
E0800-E0FFFh | E2000-E3FFFh | Pins 1&2 | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 1&2 | |
E1000-E17FFh | E2000-E3FFFh | Pins 2&3 | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 1&2 | |
E1800-E1FFFh | E2000-E3FFFh | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 1&2 | Pins 1&2 | |
Note:Pins designated should be in the closed position. | |||||||
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
LED1 | Green | On | Network connection is good |
LED1 | Green | Off | Network connection is broken |
LED2 | Red | On | Data is being transmitted or received. |
LED2 | Red | Off | Data is not being transmitted or received. |