Contec PO-32L(PC)V User manual

PO-32L(PC)VVer.1.30
1
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)
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

Ver.1.30PO-32L(PC)V
2
External Connection
To connect an external device to this board, plug the cable
from the device into the interface connector (CN1) shown
below.
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7
Interface Connector Pin Assignment
To connect an external device, plug it into the 37-pin
connector on the PO-32L(PC)V interface board.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
ON0/1
O00
O01
O02
O03
O04
O05
O06
O07
O10
O11
O12
O13
O14
O15
O16
O17
OP0/1
N.C.
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
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
1k
Ω
1k
Ω
External
Device
Plus
Common Load
Output
Pin
Load
Output
Pin
Minus
Common
External
Power
Supply
DC12V
~24V

PO-32L(PC)VVer.1.30
3
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 0 1 1
3
0 0 0 0
0
0 0 0 0
0
A15 A14 A13 A12 A11 A10 A9A8
1 2 3 4 5 6 7 8
O F F
SW1
1 2 3 4 5 6 7 8
O F F
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
4
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
+
-
O
0
0
(
C
N
1
:
2
p
i
n
)
t
r
o
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
)
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
Output Data
Bit Setting Of
Output Data
Bit Setting Of
Output Data
Flow Chat