Contec PIO-16/16L(PC)V User manual

PIO-16/16L(PC)VVer.1.30
1
Opto-Isolated Digital I/O Board
PIO-16/16L(PC)V
The PIO-16/16L(PC)V is a 16-channel digital input and
output interface board for the IBM PC/AT and compatible
computers. It can also be installed into a CONTEC I/O
expansion unit. Plugged in an ISA bus expansion slot on the
motherboard of a personal computer, can input and output
up to 16 channels.
Features
Opto-Isolated input/outputs for improved noise resistance
Up to 16 (8 signals x 2 groups) input signals
Up to 16 (8 signals x 2 groups) output signals
Two input signals can also generate interrupt requests.
Output ability: up to 35VDC, 100mA per signal, max.
Function
Input
When installed in a personal computer (PC), these boards
accept up to 16/32 digital signals (in two groups of eight) and
input them to the PC. The PC access the board for input
through four arbitrarily configurable input ports. When the
IN instruction is executed to read data through any of these
input ports, the corresponding buffer gate opens to receive
the group of digital signals from the external device. The
signals sent to the PC at this time have negative logic. The
user can assign two of the 16/32 input signals as interrupts
for the PC. These two signals can then be used as interrupt
request signals.
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
Input
Type Opto-Isolated Input (for current sinking output) (Negative logic)
Resister 3kΩ
Current required to turn ON 3.4mA (Min.)
Current required to turn OFF 0.16mA (Max.)
Number of Channels 16 channels (2 of these 16 can be used as interrupt signal)
(16 channels with the common)
Response time 1ms (Max.)
Output
Type Opto-Isolated Open Collector Output (current sinking type) (Negative logic)
Voltage 35VDC (Max.)Rating
Current 100mA Max. per channel
Number of Channels 16 channels (16 channels with the common)
Response time 1ms (Max.)
Common
I/O address Any 2-byte boundary
Interrupt Two of IRQ 3-7,9-12,14 or 15Interrupt generated at falling edge
External power supply 12 to 24VDC (±15%) 4mA/12V~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

Ver.1.30PIO-16/16L(PC)V
2
Product Configuration List
Product Configuration List
- Board[PIO-16/16L(PC)V] ... 1
- This User's Manual ... 1
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)
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.

PIO-16/16L(PC)VVer.1.30
3
External Connection
Connecting the Interface Connector
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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Connector Pin Assignment
To connect an external device to this board, plug the cable from the device into the 37-Pin connector.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
N0
*I00
I01
*I02
I03
I04
I05
I06
I07
I10
I11
I12
I13
I14
I15
I16
I17
P0
N.C.
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
N1
O00
O01
O02
O03
O04
O05
O06
O07
O10
O11
O12
O13
O14
O15
O16
O17
P1
+0port
(Input)
+1port
(Input)
+0port
(Output)
+1port
(Output)
Common minuspinfor
+0/+1outputport
Common pluspinfor
+0/+1inputportCommon pluspinfor
+0/+1outputport
Common minuspinfor
+0/+1intputport
*I00 and *I02 arealsoused asinterruptsignals
Input circuit
The on-board photocouplers isolate internal input circuits
from external devices. The input channels are to be connected
with current sinking output signals. You need an additional
power supply that is isolated from the PC to drive these
insulation circuits. When you use a 12VDC power supply,
each input channel consumes about 4mA current. With a
24VDC external power supply, each input channel consumes
about 8mA current.
V c c
B o a r d
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P h o t o c o u p l e r
3 k Ω
5 . 1 k Ω
P h o t o c o u p l e r
3 k Ω
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5 . 1 k Ω
Output circuit
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.
Input Circuit and Output Circuit
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2 4 V

Ver.1.30PIO-16/16L(PC)V
4
Setting Interrupt Levels
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 A0 to "0" (OFF) for the Board.
A7A6A5A4A3A2A1A0
Binary
Hexadecimal
0 0 0 0
0
0 0 1 1
3
0000
0
0000
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.
Enabling Interrupts
Use strapping connectors to connect input signals to the
desired interrupt levels. The assignable interrupt levels are
IRQ 3~7, 9~12, 14, and 15. Note, however, that IRQ 10~15
cannot be used on PCs with XT (8-bit) buses.
9 3 4 5 6 7
1 2
1011 12 14 15
JP1
I02 (4)
I00 (2)
IRQ
IRQ
( Example ) : To connect interrupt request signal SIG1(I02)
fromthe interface board to IRQ10 on the PC/
AT, set JP1 as shown below:
JP1
IRQ
SIG
IRQ
Interruptlevel
Interruptsignal
Interruptlevel
IRQIRQConnection
cableExternalI/O
SIG1(I02)
SIG2(I00)
IBMPC/AT(inputmodule)
10
11
12
14
15
9
3
4
5
6
7
12
9345 6 7
1 0 1 1 1 2 1 4 1 5
This board can use two of their 32 digital input signals as
interrupt request signals. These signals issue interrupt
requests to the PC. Use the on-board jumper (JP1) to set
interrupt levels.
To disable interrupts, use lead strapping connectors to
prevent input signals from being connected to specific levels.
To enable interrupts, use the on-board jumper (JP1) to set
interrupt levels. The interrupt levels that can be set for this
board are IRQs 3 to 7, 9 to 12, 14, and 15. You can assign up
to two levels of interrupt request signals. The interrupts can
correspond to input signals on a one-to-one basis. Make sure
that the interrupt levels you assign to the PIO-32LV Series
board are not used by the PC or any other expansion board.
Notes!
(1) When using interrupts, choose interrupt levels which
are not used by any other resource.
(2) Do not plug or unplug any strapping connector on JP1
when the PC (or I/O expansion unit) is turned on.
Disabling Interrupts
9 3 4 5 6 7
1 2
10 1112 14 15
JP1
IRQ
SIG
IRQ

PIO-16/16L(PC)VVer.1.30
5
I/O Port Bit Assignment
Block Diagram
Externaldigitalinput
(8ch,group 0)
Interrupt
control
DIP
switch
Data
driver
Control
circuit
PIO-16/16L(PC)V
I/O address
coincidence
circuit
Address bus
(A15~A0)
IOR
IOW
AEN
RESET
Databus
(D7~D0)
IRQ3~7
IRQ9~12
IRQ14,15
PC/ATI/O expansion bus
Photo-
coupler
Photo-
coupler
Photo-
coupler
&
Tran-
sistor
Externaldigitalinput
(8ch,group 1)
Externaldigitaloutput
(8ch,group 0)
Externaldigitaloutput
(8ch,group 1)
Photo-
coupler
&
Tran-
sistor
Input Port
If input command is executed with external equipments (relay
point of contact, semiconductor switch, etc.) when having
short-circuited the input terminal the minus side of external
power supply (external input point of contact is ON state),
it will be taken in as internal logic [1].
I/Obase
address
D7D6D5D4D3D2D1D0
I07 I06 I05 I04 I03 I02 I01 I00
I17 I16 I15 I14 I13 I12 I11 I10
[17] [16] [15] [14] [13] [12] [11] [10]
+0H
+1H
Ixx isaninputsignalname;numbersinbrackets[]
areconnectorpinnumbers.
I00 and I02 canalsoserveasinterruptsignals.
InputGroup 0(+0port)
InputGroup 1(+1port)
[9] [8] [7] [6] [5] [4] [3] [2]
Output Port
By outputting internal logic [1] (output command being
executed), the transistor of the last stage will be in ON state.
Moreover, the outputted data is latched, and it holds the
state until output command is executed again.
O07 O06 O05 O04 O03 O02 O01 O00
O17 O16
+0H
+1HO15 O14 O13 O12 O11 O10
OutputGroup 0(+0port)
I/Obase
address
D7D6D5D4D3D2D1D0
OutputGroup 1(+1port)
[28][27][26] [25] [24] [23] [22] [21]
[36] [35][34] [33][32][31][30] [29]
Oxx isanoutputsignalname;numberinbrackets[]
areconnectorpinnumbers.

Ver.1.30PIO-16/16L(PC)V
6
Example
ProgramthatmakesLEDconnectedtoO00 outputterminalas
anexampleofuseofthisboard.According toON/OFF ofthe
externalswitchconnectedtoI00 inputterminalturnon switch
off isshownbelow.Description languageisMicrosoftC.Inthe
stateofswitch-on,1isdisplayedon screen,LEDlightsup,0is
displayedon screeninthestateofswitch-off,and LEDputsout
thelight.
Setting Conditions
I/O Address: 0300H
Interrupt: unused (Please remove all the short connectors of
JP1.)
Connection example
+
-
I
0
0
(
C
N
1
:
2
p
i
n
)
O
0
0
(
C
N
1
:
2
1
p
i
n
)
Positive common
Power supply
External
(
C
N
1
:
3
7
p
i
n
)
t
r
o
P
D
C
1
2
~
2
4
V
L
E
D
5
.
1
k
O
Positive common
(
C
N
1
:
1
8
p
i
n
)
Negative common
(
C
N
1
:
2
0
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
Display Data
Input Data
Output Data
Flow Chat