Contec PO-32L(PC)V User Manual

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.

PO-32L(PC)VVer.1.30

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.

Specification

Item Specification

Output

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

Common

Voltage 35VDC (Max.) Rating

Current 100mA Max. per channel
Number of Channels 32 channels (16 channels with the common)
Response time 1ms (Max.)

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

122.0

[mm]

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.

Accessories (Option)

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)

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

Product Configuration List

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

- This User's Manual ... 1

1

External Connection

C o n n e c t o r

u s e d 3 7 - p i n

D - S U B

c o n n e c t o r

( F e m a l e ) D C L C - J 3 7 S A F - 2 0 L 9

( m f d .

b y

J A E )

e q u i v a l e n t S c r e w

n u t

:

U N C

# 4 - 4 0

( i n c h

s c r e w )

A p p l i c a b l e

c o n n e c t o r

1 7 J E - 2 3 3 7 0 - 0 2 ( D 8 C )

( m f d .

b y

D

D K ,

M a l e )

F D C D - 3 7 P

(

m f d .

b y

H I

R O S E ,

M

a l e ) D C - 3 7 P - N

(

m f d .

b y

J A E ,

M

a l e ) 1

2 1 9

2 0 2 1 3 7

To connect an external device to this board, plug the cable
from the device into the interface connector (CN1) shown
below.

Ver.1.30PO-32L(PC)V

Interface Connector Pin Assignment

To connect an external device, plug it into the 37-pin
connector on the PO-32L(PC)V interface board.

Com m on m i n u s pi n f or
+0/+1 ou t pu t por t

Com mon pl u s pi n f or
+0/+1 ou t pu t por t

+0 por t
(Ou t put )

+1 por t
(Ou t put )

ON 0/1

O 00
O 01
O 02
O 03
O 04
O 05
O 06
O 07
O 10
O 11
O 12
O 13
O 14
O 15
O 16
O 17

OP 0/1

N .C.

1

20

2

21

3

22

4

23

5

24

6

25

7

26

8

27

9

28

10

29

11

30

12

31

13

32

14

33

15

34

16

35

17

36

18

37

19

ON 2/3
O 20
O 21
O 22
O 23
O 24
O 25
O 26
O 27
O 30
O 31
O 32
O 33
O 34
O 35
O 36
O 37
OP 2/3

Comm on mi n u s pi n f or
+2/+3 ou t put por t

+2 por t
(Ou t pu t )

+3 por t
(Ou t pu t )

Com m on pl u s pi n f or
+2/+3 ou t put por t

Output Circuit

Output circuit

The output circuit of these boards is illustrated in the
following figure. The output channel is a photocoupler­isolated 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.

V cc

1k

Ω

1k

Ω

1 2 k

12 k

B oa r d

Ω

Ω

P l u s

C om m on

O u t p u t

P i n

O u t p u t

P i n

M i n u s

C om m on

L oa d

E x t er n a l
D ev i ce

L oa d

E x t er n a l
P ow er
Su p p l y
D C 1 2 V

~24 V

2

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.

SW1

Bi nary

H exadecima l

1234567

OFF

A15 A14 A13 A1 2 A11 A1 0 A9 A8

0 0 0 000 0 1 130 0 0 000 0 0 0

8

A7 A6 A5 A4 A3 A2 A1 A0

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.

SW 2

1234567

OFF

8

0

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."

I/O base
address

D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0

+0H

O07

[9]

+1H

O17
[17]

O27

+2H

[28]

O37

+3H

[36]

Oxx is an output sign al name; numbers in br ackets [ ]
are connector pin num bers.

Output Group 0 (+0 port)

O04

O05

O06

[7]

[8]

Output Group 1 (+1 port)

O14

O15

O16
[16]

O26
[27]

O36
[35]

[14]

[15]

Output Group 2 (+2 port)

O24

O25

[25]

[26]

Output Group 3 (+3 port)

O34

O35

[33]

[34]

O02

O03

[4]

[5]

[6]

O12

O13

[12]

[13]

O22

O23

[23]

[24]

O32

O33

[31]

[32]

O01

[3]

O11
[11]

O21
[22]

O31
[30]

O00

[2]

O10
[10]

O20
[21]

O30
[29]

Address bus

(A15~A0)

IOR
IOW
AEN
RESET

PC/AT I/O expansion bus

Data bus
(D7~D0)

Block Diagram

DIP

swit ch

I/O address
coincidence

circuit

Control
circuit

Data

driver

Photo­coupler

&
Tran­sistor

Photo­coupler

&
Tran­sistor

Photo­coupler

&
Tran­sistor

Photo­coupler

&
Tran­sistor

PO-32L(PC)V

External digit al output

(8ch, group 0)

External digit al output

(8ch, group 1)

External digit al output

(8ch, group 2)

External digit al output

(8ch, group 3)

3

Example

-

O 0 0 ( C N 1

:

2 p i n )

P

External

Power supply

D C 1 2

~

2 4 V L E D

5 . 1 k

O

Positiv

e common

( C N 1 :

1 8 p i n )

Negative common

(

C N 1

:

1 p i n )

Ver.1.30PO-32L(PC)V

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

o

r
t

+

Flow Chat

Start

Set I/O Address

Bit Setting Of

Output Data

Output Data

Bit Setting Of

Output Data

Output Data

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() ) ;
}

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