16 CHANNEL RELAY OUTPUT/PHOTO-ISOLATOR IO card Settings and Configuration

Card Type	Data acquisition
Chip Set	NEC 8255
I/O Options	Opto-isolated input port, relay control output port
Data Bus	8-bit ISA

CONNECTIONS
Function	Label	Function	Label
Breadboard	BB1	Relay control output (see pinout below)	J2
Opto-isolated input (see pinout below)	J1

J1 PINOUT
Function	Pins	Function	Pins
Channel 1 relay control	1 & 2	Channel 11 relay control	21 & 22
Channel 2 relay control	3 & 4	Channel 12 relay control	23 & 24
Channel 3 relay control	5 & 6	Channel 13 relay control	25 & 26
Channel 4 relay control	7 & 8	Channel 14 relay control	27 & 28
Channel 5 relay control	9 & 10	Channel 15 relay control	29 & 30
Channel 6 relay control	11 & 12	Channel 16 relay control	31 & 32
Channel 7 relay control	13 & 14	Ground	33 & 34
Channel 8 relay control	15 & 16	+5V DC power	35 & 36
Channel 9 relay control	17 & 18	+12V DC power	37 & 38
Channel 10 relay control	19 & 20	Ground	39 & 40

J2 PINOUT
Function	Pin	Function	Pin
Channel 1 negative	1	Channel 11 negative	21
Channel 1 positive	2	Channel 11 positive	22
Channel 2 negative	3	Channel 12 negative	23
Channel 2 positive	4	Channel 12 positive	24
Channel 3 negative	5	Channel 13 negative	25
Channel 3 positive	6	Channel 13 positive	26
Channel 4 negative	7	Channel 14 negative	27
Channel 4 positive	8	Channel 14 positive	28
Channel 5 negative	9	Channel 15 negative	29
Channel 5 positive	10	Channel 15 positive	30
Channel 6 negative	11	Channel 16 negative	31
Channel 6 positive	12	Channel 16 positive	32
Channel 7 negative	13	Ground	33
Channel 7 positive	14	Ground	34
Channel 8 negative	15	+5V DC power	35
Channel 8 positive	16	+5V DC power	36
Channel 9 negative	17	+12V DC power	37
Channel 9 positive	18	+12V DC power	38
Channel 10 negative	19	Ground	39
Channel 10 positive	20	Ground	40

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Factory configured - do not alter	JP1	Unidentified

INTERRUPT
Setting	JP2/A	JP2/B	JP2/C	JP2/D	JP2/E	JP2/F
IRQ2	Closed	Open	Open	Open	Open	Open
IRQ3	Open	Closed	Open	Open	Open	Open
IRQ4	Open	Open	Closed	Open	Open	Open
IRQ5	Open	Open	Open	Closed	Open	Open
IRQ6	Open	Open	Open	Open	Closed	Open
IRQ7	Open	Open	Open	Open	Open	Closed
Disabled	Open	Open	Open	Open	Open	Open

BASE I/O ADDRESS
Setting		SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7	SW1/8
	000h	On	On	On	On	On	On	On	On
	004h	Off	On	On	On	On	On	On	On
	008h	On	Off	On	On	On	On	On	On
	00Ch	Off	Off	On	On	On	On	On	On
	010h	On	On	Off	On	On	On	On	On
»	1A0h	On	Off	Off	On	Off	On	On	On
	3ECh	Off	Off	On	Off	Off	Off	Off	Off
	3F0h	On	On	Off	Off	Off	Off	Off	Off
	3F4h	Off	On	Off	Off	Off	Off	Off	Off
	3F8h	On	Off	Off	Off	Off	Off	Off	Off
	3FCh	Off	Off	Off	Off	Off	Off	Off	Off
Note: A total of 255 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/1 is the Most Significant Bit and switch SW1/8 is the Least Significant Bit. The switches have the following decimal values: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64, SW1/5=32, SW1/6=16, SW1/7=8, SW1/8=4. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

DIAGNOSTIC LED(S)

The function of the LED D33 is unidentified.