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

DECISION COMPUTER INTERNATIONAL CO., LTD.

8 CHANNEL RELAY OUTPUT/PHOTO-ISOLATOR

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

CONNECTIONS
Function
Label
Opto-isolated input and relay control output port
CN1

CN1 PINOUT
Function
Pin
Function
Pin
Channel 1 relay open
1
Channel 4 relay open
20
Channel 1 relay common
2
Channel 4 relay common
21
Channel 1 relay closed
3
Channel 4 relay closed
22
Channel 2 relay open
4
Channel 5 relay open
23
Channel 2 relay common
5
Channel 5 relay common
24
Channel 2 relay closed
6
Channel 6 relay open
25
Channel 3 relay open
7
Channel 6 relay common
26
Channel 3 relay common
8
Channel 7 relay open
27
Channel 3 relay closed
9
Channel 7 relay common
28
Channel 8 relay open
10
Ground
29
Channel 8 relay common
11
Channel 1 negative
30
Channel 1 positive
12
Channel 2 negative
31
Channel 2 positive
13
Channel 3 negative
32
Channel 3 positive
14
Channel 4 negative
33
Channel 4 positive
15
Channel 5 negative
34
Channel 5 positive
16
Channel 6 negative
35
Channel 6 positive
17
Channel 7 negative
36
Channel 7 positive
18
Channel 8 negative
37
Channel 8 positive
19

OPTO-ISOLATION OPTIONS
Setting
JPxA
JPxB
Differential signals (+ and -)
Pins 1 & 2 closed
Pins 2 & 3 closed
Single-ended signals (+ and GND)
Pins 1 & 2 closed
Pins 1 & 2 closed
Single-ended signals, TTL levels
Pins 2 & 3 closed
N/A
Note:The exact locations of JP1A through JP8A and JP1B through JP8B are unidentified. JP1A and JP1B control the opto-isolation functions of channel 1. The settings for JP2A through JP8A and JP2B through JP8B are identical, controlling channels 2 through 8 respectively.

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
On
On
On
On
On
On
On
Off

008h
On
On
On
On
On
On
Off
On

010h
On
On
On
On
On
Off
On
On

014h
On
On
On
On
On
Off
On
Off
»
2A8h
Off
On
Off
On
Off
On
Off
On

3ECh
Off
Off
Off
Off
Off
On
Off
Off

3F0h
Off
Off
Off
Off
Off
Off
On
On

3F4h
Off
Off
Off
Off
Off
Off
On
Off

3F8h
Off
Off
Off
Off
Off
Off
Off
On

3FCh
Off
Off
Off
Off
Off
Off
Off
Off
Note: Over 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 512 to obtain the correct memory address. (Off=1, On=0)

DIAGNOSTIC LED(S)
The functions of the LEDs are unidentified.

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

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

CONNECTIONS
Function	Label
Opto-isolated input and relay control output port	CN1

CN1 PINOUT
Function	Pin	Function	Pin
Channel 1 relay open	1	Channel 4 relay open	20
Channel 1 relay common	2	Channel 4 relay common	21
Channel 1 relay closed	3	Channel 4 relay closed	22
Channel 2 relay open	4	Channel 5 relay open	23
Channel 2 relay common	5	Channel 5 relay common	24
Channel 2 relay closed	6	Channel 6 relay open	25
Channel 3 relay open	7	Channel 6 relay common	26
Channel 3 relay common	8	Channel 7 relay open	27
Channel 3 relay closed	9	Channel 7 relay common	28
Channel 8 relay open	10	Ground	29
Channel 8 relay common	11	Channel 1 negative	30
Channel 1 positive	12	Channel 2 negative	31
Channel 2 positive	13	Channel 3 negative	32
Channel 3 positive	14	Channel 4 negative	33
Channel 4 positive	15	Channel 5 negative	34
Channel 5 positive	16	Channel 6 negative	35
Channel 6 positive	17	Channel 7 negative	36
Channel 7 positive	18	Channel 8 negative	37
Channel 8 positive	19

OPTO-ISOLATION OPTIONS
Setting	JPxA	JPxB
Differential signals (+ and -)	Pins 1 & 2 closed	Pins 2 & 3 closed
Single-ended signals (+ and GND)	Pins 1 & 2 closed	Pins 1 & 2 closed
Single-ended signals, TTL levels	Pins 2 & 3 closed	N/A
Note:The exact locations of JP1A through JP8A and JP1B through JP8B are unidentified. JP1A and JP1B control the opto-isolation functions of channel 1. The settings for JP2A through JP8A and JP2B through JP8B are identical, controlling channels 2 through 8 respectively.

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	On	On	On	On	On	On	On	Off
	008h	On	On	On	On	On	On	Off	On
	010h	On	On	On	On	On	Off	On	On
	014h	On	On	On	On	On	Off	On	Off
»	2A8h	Off	On	Off	On	Off	On	Off	On
	3ECh	Off	Off	Off	Off	Off	On	Off	Off
	3F0h	Off	Off	Off	Off	Off	Off	On	On
	3F4h	Off	Off	Off	Off	Off	Off	On	Off
	3F8h	Off	Off	Off	Off	Off	Off	Off	On
	3FCh	Off	Off	Off	Off	Off	Off	Off	Off
Note: Over 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 512 to obtain the correct memory address. (Off=1, On=0)