TC6843 ARC-CARD/SE Network Card Settings and Configuration

THOMAS-CONRAD CORPORATION

TC6843 ARC-CARD/SE

Card Type
Network Interface Card
Chip Set
NCR 90C26
NIC Type
ARCnet
Network Transfer Rate
2.5Mbps
Topology
Linear Bus, Star
Wiring Type
RG-62A/U 93ohm coaxial
Data Bus
16-bit Mac SE

CONNECTIONS
Function
Label
Function
Label
Header to transceiver
J1A
RG-62A/U 93ohm coaxial connector
J2
Header to controller
J1B

EXTENDED RANGE CONFIGURATION
Response Time
Recon Time
JP1
JP2
»
74.7 uS
840 mS
Open
Open

283.4 uS
1680 mS
Closed
Open

561.8 uS
1680 mS
Open
Closed

11118.6 uS
1680 mS
Closed
Closed
Note: This setting should only be changed when the length of the ARCnet segments exceed 6000 meters.

NODE ADDRESS SELECTION
Setting
SW1/1
SW1/2
SW1/3
SW1/4
SW1/5
SW1/6
SW1/7
SW1/8
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
5
Off
On
Off
On
On
On
On
On
249
Off
On
On
Off
Off
Off
Off
Off
250
On
Off
On
Off
Off
Off
Off
Off
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
Note:
A total of 253 node address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/8=128, SW1/7=64, SW1/6=32, SW1/5=16, SW1/4=8, SW1/3=4, SW1/2=2, SW1/1=1. Turn off the switches and add the values of the switches to obtain the correct node address. (Off=1, On=0)
Addresses 0, 254 and 255 are reserved and should not be used.

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TC6843 ARC-CARD/SE Network Card Settings and Configuration

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Card Type	Network Interface Card
Chip Set	NCR 90C26
NIC Type	ARCnet
Network Transfer Rate	2.5Mbps
Topology	Linear Bus, Star
Wiring Type	RG-62A/U 93ohm coaxial
Data Bus	16-bit Mac SE

CONNECTIONS
Function	Label	Function	Label
Header to transceiver	J1A	RG-62A/U 93ohm coaxial connector	J2
Header to controller	J1B

EXTENDED RANGE CONFIGURATION
Response Time		Recon Time	JP1	JP2
»	74.7 uS	840 mS	Open	Open
	283.4 uS	1680 mS	Closed	Open
	561.8 uS	1680 mS	Open	Closed
	11118.6 uS	1680 mS	Closed	Closed
Note: This setting should only be changed when the length of the ARCnet segments exceed 6000 meters.

NODE ADDRESS SELECTION
Setting	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7	SW1/8
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
5	Off	On	Off	On	On	On	On	On
249	Off	On	On	Off	Off	Off	Off	Off
250	On	Off	On	Off	Off	Off	Off	Off
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
Note: A total of 253 node address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/8=128, SW1/7=64, SW1/6=32, SW1/5=16, SW1/4=8, SW1/3=4, SW1/2=2, SW1/1=1. Turn off the switches and add the values of the switches to obtain the correct node address. (Off=1, On=0) Addresses 0, 254 and 255 are reserved and should not be used.