Contec PO-32L(PC)V Manuale utente

PO-32L(PC)VVer.1.30

Opto-Isolated Digital Output Board

PO-32L(PC)V

The PO-32L(PC)V is a 32-channel digital output interface

board for the IBM PC/AT and compatible computers. It can

also be installed into a CONTEC I/O expansion unit.

Features

Opto-Isolated outputs for improved noise resistance.

Up to 32 (8 signals x 4 groups) output signals.

Output ability: up to 35VDC, 100mA per signal, max.

Functions

Output

When installed on a personal computer (PC), these boards

write up to 16/32 digital signals (in two groups of eight) to an

external device. The PC accesses the board for output

through four arbitrarily configurable output ports. When the

OUT instruction is executed to write data to any of these

output ports, the corresponding latch circuit holds the data.

The digital signals are then electrically insulated by the

photocoupler. They are output as a group to an external

device via the transistor. The signals output to the external

device at this time have negative logic. The data in the latch

circuit remains intact until the OUT instruction is executed

again.

Specification

Item Specification

Output

Type Opto-Isolated Open Collector Output (current sinking type) (Negative logic)

Voltage 35VDC (Max.)Rating

Current 100mAMax. per channel

Number of Channels

32 channels (16 channels with the common)

Response time 1ms (Max.)

Common

I/O address Any 4-byte boundary

External power supply

12 to 24VDC (±15%) Note: 4mA/12V to 8mA/24V per input channel

Power consumption 5VDC 50mA (Max.)

Operating condition 0 to 50°C, 20% to 90% (not condensing)

Connecting distance 50m (Typ.) (depending on wiring environment)

Dimension (mm) 163.0(L) x 122.0 (H)

Weight 120g

163.0

[mm]

122.0

Accessories (Option)

Screw Terminal: EPD-37 *1

Termination Panel: DTP-3(PC)

Termination Panel: DTP-4(PC)

Signal Monitor for Digital I/O: CM-32(PC)

Signal Monitor for Digital I/O: CM-32(PC)E *1

*1 : The option cable PCB37P or PCB37PS is needed.

Cable & Connector (Option)

Flat cable with 37-pin D-SUB connectors at either end:

PCB37P-*(1.5m, 3m, 5m)

Shielded cable with 37-pin D-SUB connectors at either end:

PCB37PS-*(0.5m, 1.5m, 3m, 5m)

Flat cable with a 37-pin D-SUB connector at one end:

PCA37P-*(1.5m, 3m, 5m)

Shielded cable with a 37-pin D-SUB connector at one end:

PCA37PS-*(0.5m, 1.5m, 3m, 5m)

Product Configuration List

- Board[PO-32L(PC)V] ... 1

- This User's Manual ... 1

Ver.1.30PO-32L(PC)V

External Connection

To connect an external device to this board, plug the cable

from the device into the interface connector (CN1) shown

below.

(

)

(

)

(

)

(

)

(

)

(

)

(

)

Interface Connector Pin Assignment

To connect an external device, plug it into the 37-pin

connector on the PO-32L(PC)V interface board.

ON0/1

O00

O01

O02

O03

O04

O05

O06

O07

O10

O11

O12

O13

O14

O15

O16

O17

OP0/1

N.C.

ON2/3

O20

O21

O22

O23

O24

O25

O26

O27

O30

O31

O32

O33

O34

O35

O36

O37

OP2/3

+0port

(Output)

+1port

(Output)

+2port

(Output)

+3port

(Output)

Commonminuspinfor

+2/+3outputport

Commonpluspinfor

+0/+1outputport

Commonpluspinfor

+2/+3outputport

Commonminuspinfor

+0/+1outputport

Output Circuit

Output circuit

The output circuit of these boards is illustrated in the

following figure. The output channel is a photocoupler-

isolated open-collector (sink type). You need an additional

power supply that is isolated from the PC to drive these

insulation circuits. The maximum output current ranting is

100mA per channel.

Board

12k

Ω

12k

Ω

Vcc

Ω

External

Device

Plus

Common Load

Output

Load

Output

Minus

Common

External

Power

Supply

DC12V

~24V

PO-32L(PC)VVer.1.30

I/O Address Setting

Use the on-board DIP switches (SW1 and SW2) to set the I/

O base address of your board. Individual bits in SW1 and

SW2 correspond to the 15 high-order bits (A15 to A1) in the

I/O base address.

Always set A1 to A0 to "0" (OFF) for the board.

A7A6A5A4A3A2A1A0

Binary

Hexadecimal

0000

0 0 1 1

0 0 0 0

A15 A14 A13 A12 A11 A10 A9A8

SW1

SW2

The figure shows that the head I/O Address is set as 0300H

by a diagram, and this board occupies the I/O Address of

0300H-0301H.

I/O Port Bit Assignment

Output Port Bit Assignments

When "1" is output to a bit, the corresponding output data is

set to "ON." If "0" is output to the bit, the data is set to

"OFF."

Block Diagram

I/Obase

address D7D6D5D4D3D2D1D0

+0H

+1H

Oxx isan outputsignalname;numbersinbrackets[]

areconnectorpinnumbers.

+2H

+3H

O00

O10

O20

O30

[29]

[21]

[10]

[2]

O01

O11

O21

O31

[30]

[22]

[11]

[3]

O02

O12

O22

O32

[31]

[23]

[12]

[4]

O03

O13

O23

O33

[32]

[24]

[13]

[5]

O04

O14

O24

O34

[33]

[25]

[14]

[6]

O05

O15

O25

O35

[34]

[26]

[15]

[7]

O06

O16

O26

O36

[35]

[27]

[16]

[8]

O07

O17

O27

O37

[36]

[28]

[17]

[9]

OutputGroup 0(+0port)

OutputGroup 1(+1port)

OutputGroup 2(+2port)

OutputGroup 3(+3port)

DIP

switch

Data

driver

Control

circuit

PO-32L(PC)V

I/O address

coincidence

circuit

Address bus

(A15~A0)

IOR

IOW

AEN

RESET

Databus

(D7~D0)

PC/ATI/O expansion bus

Photo-

coupler

Tran-

sistor

Externaldigitaloutput

(8ch,group 2)

Externaldigitaloutput

(8ch,group 3)

Photo-

coupler

Tran-

sistor

Photo-

coupler

Tran-

sistor

Externaldigitaloutput

(8ch,group 0)

Externaldigitaloutput

(8ch,group 1)

Photo-

coupler

Tran-

sistor

Ver.1.30PO-32L(PC)V

Example

Program that makes LED connected to O00 output terminal

as an example of use of this board. According to ON/OFF of

the external switch connected to I00 input terminal turn on

switch off is shown below. Description language is Microsoft

C. In the state of switch-on, 1 is displayed on screen, LED

lights up, 0 is displayed on screen in the state of switch-off,

and LED puts out the light.

Setting Conditions

I/O Address: 0300H

Interrupt: unused (Please remove all the short connectors of

JP1.)

Connection example

(

)

External

Power supply

Positiv

e common

(

)

Negative common

(

)

Program List

#include<stdio.h>

void main (void)

{

int port ;

int pidata ;

port = 0x300 ; /*Set I/O Address*/

do {

pidata = inp ( port ) ; /*Input data*/

printf( "%x\n", pidata ); /*Display data*/

outp( port, pidata ) /*Output data*/

}while( !kbhit() ) ;

}

Start

Set I/O Address

Output Data

Bit Setting Of

Output Data

Bit Setting Of

Output Data

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