Contec PIO-16/16L(104) Owner's manual

Brand: Contec

Model: PIO-16/16L(104)

Type: Owner's manual

PIO-16/16L(104)

Isolated Digital Input /Output Board

for PC/104

User’s Guide

PIO-16/16L(104) i

No part of this document may be copied or reproduced in any form

by any means without prior written consent of CONTEC Co., LTD.

CONTEC Co., LTD. makes no commitment to update or keep

current the information contained in this document. The

information in this document is subject to change without notice.

All relevant issues have been considered in the preparation of this

document. Should you notice an omission or any questionable

item in this document, please feel free to notify CONTEC Co.,

LTD.

Regardless of the foregoing statement, CONTEC assumes no

responsibility for any errors that may appear in this document nor

for results obtained by the user as a result of using this product.

Trademarks

MS, Microsoft, MS-DOS and Windows are trademarks of Microsoft

Corporation. Other brand and product names are trademarks of their

respective holder.

PIO-16/16L(104)ii

Product Configuration

- PIO-16/16L(104) Board…1

- PIO-16/16L(104) User's Guide (this booklet)…1

Unpacking:

This board is specially packed in an anti-static bag to prevent

damage in shipping.

Check the contents to make sure that you have everything listed

above. If you do not have all the items, contact your distributor

or CONTEC group office where you purchased.

Note!

Do not remove the board from its protective packaging until the

computer case is open and ready for installation. Electrical static

can cause damage to electrical components.

PIO-16/16L(104) iii

Table of Contents

Trademarks ........................................................................i

Product Configuration ..................................................... ii

1. Introduction .............................................................1

About the PIO-16/16L(104) Board...............................1

Limited Three-Year Warranty......................................2

How to Obtain Service..................................................2

Liability.........................................................................2

2. Setup ....................................................................... 3

Board Setup.......................................................................3

Components Location ...................................................4

Setting Base Address....................................................5

Setting Interrupt...........................................................7

Installing the PIO-16/16L(104) Board.........................9

External Connection.......................................................10

Electrical Interface .....................................................10

Opto-isolated Output Circuit Protection...................13

3. I/O Registers .......................................................... 15

Input/Output Registers by Standard Mode...................17

Input Data Group Access............................................17

Standard Interrupt.....................................................18

Output Data Group Access.........................................18

Input/Output Registers by Extended Mode...................19

Bit Access.....................................................................19

Group Access...............................................................21

Digital Filter Function of Input Channels................23

Handshake Mode........................................................26

4. System Reference.................................................... 29

Specifications:..................................................................29

Block Diagram.................................................................30

PIO-16/16L(104)iv

5. Troubleshooting...................................................... 31

Questions:........................................................................31

Is the pilot light on?....................................................31

Did the system boot up? .............................................31

Does your program work?...........................................31

Does the sample program work?................................32

Still have a problem?..................................................32

6. Index ..................................................................... 35

PIO-16/16L(104) v

List of Figures

Figure 2.1. Components Location................................................ 4

Figure 2.2. Default Base Address................................................ 5

Figure 2.3. JP1 Default Interrupt Setting ..................................... 7

Figure 2.4. JP1 Setting Example.................................................. 7

Figure 2.5. Example of Checking PC/104.................................... 8

Figure 2.6. Install the Board........................................................ 9

Figure 2.7. PIO-16/16L(104) Pin Assignment ........................... 10

Figure 2.8. Opto-isolated Input Circuitry....................................11

Figure 2.9. Opto-isolated Output Circuitry.................................11

Figure 2.10. STB signal Input Circuitry..................................... 12

Figure 2.11. ACK signal Output Circuitry................................. 12

Figure 2.12. Output Protection Circuits..................................... 13

Figure 3.1. PIO-16/16L(104) Address Mapping ........................ 15

Figure 3.2. PIO-16/16L(104)’s Internal Registers for Extended

Mode...................................................................... 16

Figure 3.3. Input Port (Base Address +0H~3H)......................... 17

Figure 3.4. Output Port (Base Address +2H~3H) ...................... 18

Figure 3.5. Bit Access Registers................................................ 19

Figure 3.6. Group Access Registers........................................... 21

Figure 3.7. Principle of Digital Filter Function.......................... 23

Figure 3.8. Principle Filter Function Register............................ 23

Figure 3.9. Handshake Mode (Strobed Input) Waveform........... 26

Figure 3.10. Handshake Registers ............................................. 27

Figure 4.1. Block Diagram........................................................ 30

PIO-16/16L(104)vi

List of Tables

Table 2.1. Default Board Settings................................................ 3

Table 2.2. Reserved I/O Addresses.............................................. 6

Table 2.3. Output Protection Choices ........................................ 13

Table 3.1. Select Input/Output Group Port................................. 21

Table 3.2. Digital Filter Time Setting ........................................ 24

Table 4.1. Specifications............................................................ 29

Introduction

PIO-16/16L(104) 1

1. Introduction

About the PIO-16/16L(104) Board

The CONTEC PIO-16/16L(104) is a 32-channel opto-isolated

digital I/O board for the PC/104 bus that adds parallel I/O ports to a

PC/104-bus system.

PIO-16/16L(104) comes with 16 opto-isolated input lines (2 input

groups) and 16 opto-isolated open-collector output lines (2 output

groups) and is designed to work with low voltage external devices.

In addition, it has several extended functions such as Bit Access,

Group Access and Handshake mode.

For more information, see System Reference in Chapter 4.

Introduction

PIO-16/16L(104)2

Limited Three-Year Warranty

CONTEC Interface boards are warranted by CONTEC Co., LTD. to

be free from defects in material and workmanship for up to three

years from the date of purchase by the original purchaser.

Repair will be free of charge only when this device is returned

freight prepaid with a copy of the original invoice and a Return

Merchandise Authorization to the distributor or the CONTEC group

office, from which it was purchased.

This warranty is not applicable for scratches or normal wear, but

only for the electronic circuitry and original boards. The warranty

is not applicable if the device has been tampered with or damaged

through abuse, mistreatment, neglect, or unreasonable use, or if the

original invoice is not included, in which case repairs will be

considered beyond the warranty policy.

How to Obtain Service

For replacement or repair, return the device freight prepaid, with a

copy of the original invoice. Please obtain a Return Merchandise

Authorization Number (RMA) from the CONTEC group office

where you purchased before returning any product.

* No product will be accepted by CONTEC group without the

RMA number.

Liability

The obligation of the warrantor is solely to repair or replace the product.

In no event will the warrantor be liable for any incidental or

consequential damages due to such defect or consequences that arise

from inexperienced usage, misuse, or malfunction of this device.

Setup

PIO-16/16L(104) 3

2. Setup

This section covers everything from getting a PIO-16/16L(104)

board out of the box to plugging it into your computer. It includes

instructions for setting base address and interrupt.

Board Setup

The PIO-16/16L(104) interface board is shipped from the factory

with the following settings:

Table 2.1. Default Board Settings

Function

Setting

Hardware

Base Address

500H SW1, SW2

Interrupt

Disable JP1

These settings are appropriate for many systems. However, you

must change these settings if your computer has another board that

uses the same base address. You can also connect a short plug on

JP 1 to serve as an interrupt line. The following pages contain

instructions for changing these settings of your board.

Setup

PIO-16/16L(104)4

Components Location

Figure 2.1. is a picture of the PIO-16/16L(104) board.

12345678

SW2

JP1

1 11

PIO-16/16L(104)

12345678

SW1

ASIC

CN1

Figure 2.1. Components Location

Setup

PIO-16/16L(104) 5

Setting Base Address

The base address for addressing the I/O ports of the PIO-

16/16L(104) board is set at the factory to address 500H. Figure

2.2. shows the position for the DIP-switches on SW1 and SW2

which set this address.

SW1 DIP-switch positions 1 through 8 correspond to address lines

A15 through A8 while SW2 positions 1 through 8 correspond to A7

through A0. The PIO-16/16L(104) base address must be set to an

even byte boundary where it can reserve 4 bytes of address space.

You do not need to set the least significant bit A0, A1. The unused

DIP-switch positions are seen by your PC system as zeroes.

A7 A6 A5 A4 A3 A2 A1 A0A15 A14 A13 A12 A11 A9 A8

SW1

SW2

A10

Figure 2.2. Default Base Address

Note!

I/O address, 0000H to 00FFH, are reserved for the system board

I/O. 0100H to FFFFH are available on the I/O channel. Table

2.2. shows the Hex addresses already used by other devices.

CONTEC recommends *300H, *700H, *B00H, and *F00H (where

* is any number from 0 to F) as valid base addresses. For more

information, please consult the technical reference manual for your

computer.

Caution!

When setting the base address above 400H, be sure to read the

following page.

Setup

PIO-16/16L(104)6

Table 2.2. Reserved I/O Addresses

Hex Range

01F0 - 01F8 Fixed Disk

0200 - 0207 Game Port

0278 - 027F Parallel Printer Port 2

02F8 - 02FF Serial Port 2

0300 - 031F Prototype Card

0360 - 036F Reserved

0378 - 037F Parallel Printer Port 1

0380 - 038F SDLC, Bisynchronous 2

03A0 - 03AF Bisynchronous 1

03B0 - 03BF Monochrome Display Adapter

03C0 - 03CF Reserved

03D0 - 03DF Color/Graph Monitor Adapter

03F0 - 03F7 Diskette Controller

03F8 - 03FF Serial Port 1

0790 - 0793 Cluster Adapter 1

0B90 - 0B93 Cluster Adapter 2

1390 - 1393 Cluster Adapter 3

2390 - 2393 Cluster Adapter 4

Device

Note!

Consult the I/O address map section of the IBM PC Technical

Reference Manual for further details on reserved addresses.

IBM recommends a device base address between 100H and 3FFH

only. You can assign your CONTEC board to a base address

beyond this recommended limit by adding 400H, 800H, or C00H to

the addresses listed in the table above.

Audio uses address space beyond 3FFH. These addresses may be

"shadows" into reserved address space between 100H and 3FFH

that can't be used. For example if 1F0H is reserved for a fixed

disk, and the disk drive controller card only sees the 10 least

significant (A0 ~ A9) address lines, then you can't use the

following: 1F0H, 5F0H, 9F0H, or DF0H. Writing to an address

like 1F0H or 5F0H would inadvertently activate the disk drive

controller board.

Setup

PIO-16/16L(104) 7

Setting Interrupt

Default Setting

The jumper pin on jumper block JP1 of the PIO-16/16L(104) board,

when connected, serves as a switch that assigns PC system

interrupts to an external interrupt line. The board is shipped as the

interrupt line disabled. Figure 2.3. shows this orientation.

JP1

Short plug

1 11

Figure 2.3. JP1 Default Interrupt Setting

Setting Interrupt Level

The PIO-16/16L(104) can issule one interrupt signal. To use an

interrupt, you must connect a jumper (short plug) on JP1. The

interrupt signal can be assigned to PC system interrupt level IRQ3

to IRQ7 (pin 11 to pin 7 on JP 1), IRQ9 to IRQ12 (pin 6 to pin 3 on

JP 1), IRQ14 and IRQ15 (pin 2 and pin 1 on JP 1). Figure 2.4. is

an example of connecting the signal to IRQ3.

JP1

1 11

IRQ 15 14 12 11 10 9 7 6 5 4 3

Figure 2.4. JP1 Setting Example

Interrupt Pin Assignment

The interrupt pin is assigned to pin B1(input line PI00) in the 50-pin

connector for the external interrupt signal line.

See PIO-16/16L (104) pin assignment in figure 2.7. for more

information.

Checking Available Interrupt

The PC/104 system has two interrupt controllers (CTLR 1 and

CTLR 2). CTLR 1 allows devices to handle interrupt level IRQ 3

~ IRQ 7, and CTLR 2 allows devices to handle interrupt level IRQ

9~IRQ 12, IRQ 14, IRQ 15 that are fed into IRQ 2 of CTLR 1.

Setup

PIO-16/16L(104)8

When an interrupt is enabled (the mask bit is set to 0), the next

interrupt of that level causes the interrupt controller to route control

to the device handler at the address found in the corresponding

entry in the vector table. Mask bits set to 1 have not yet been

reserved for interrupts and are available for use by your interrupt

handler.

To check the availability of interrupts on your system, use the

following C instructions to check the mask bit settings.

CTLR 1 CTLR 2

a = inp (0x21); a = inp (0xa1);

printf ("%x",a); printf ("%x",a);

This returns a hex number that represents the status of the mask

your PC motherboard. Convert this number to binary and match

the bits to the interrupt level shown in the example below.

1 1 0 1 1 0 0 0

7 6 5 4 3 0

0 = not available

1 = available

a: D8H

Interrupt level

1 1 0 1 1 0 0 0

a: D8H

Interrupt level

CTLR1

CTLR2

Figure 2.5. Example of Checking PC/104

If D8H is returned when you test CTLR 1 then levels 3, 4, 6, and 7

are available. If you test CTLR 2 then levels 11, 12, 14, and 15

are available.

Caution!

The test described above detects the presence of previously loaded

interrupt routines. Before you conduct this test you must install all

other I/O boards and their drivers. If your PC has software

packages that monitor or control external devices you should first

load (and then immediately quit) from these packages. This allows

the test program to see which interrupts have been registered by

these programs.

Setup

PIO-16/16L(104) 9

Installing the PIO-16/16L(104) Board

You need to install your PIO-16/16L(104) board to PC/104 system.

You will need a small screw driver to install the board and a non-

conductive tool to set the DIP-switches.

1. Turn the PC/104 system power switch off.

2. Inspect the board. Check the board for any visible damage or

loosened parts. If you notice any problems with the board,

contact CONTEC. Do not attempt to fix the board yourself.

CONTEC does not warranty boards damaged or worked-on by

customers.

3. Connect your board into the PC/104 BUS socket of your system.

4. Anchor the board with the screws and the locking washers.

Cable

Screw

Figure 2.6. Install the Board

5. Attach external cables. Use a 50-pin cable at both ends, to

connect your external devices to the 50-pin DUAL ROW BOX

HEADER on your board.

6. Turn on the power.

Setup

PIO-16/16L(104)10

External Connection

Connect the PIO-16/16L(104) interface board to external devices

via a 50-pin DUAL ROW BOX HEADER. The header

description is shown in the following figure.("NC" in Figure 2.7.

means this line is undefined. In the figure, "PO" means output

channel, "PI" means input channel, "00" means the number of the

channel. For example, "PO01" means output 01 channel. See

Block Diagram in Chapter 4 for more information.)

Interface Connector Pin Assignments

A10

A11

A12

A13

A14

A15

A16

A17

A18

A19

A20

A21

A22

A23

A24

A25

B10

B11

B12

B13

B14

B15

B16

B17

B18

B19

B20

B21

B22

B23

B24

B25

PO00

PO01

PO02

PO03

PO04

PO05

PO06

PO07

OP0

ON0

N.C.

PO10

PO11

PO12

PO13

PO14

PO15

PO16

PO17

OP1

ON1

N.C.

ACK

OUTPUT

GROUP2

PI00*

PI01

PI02

PI03

PI04

PI05

PI06

PI07

IP0

IN0

N.C.

PI10

PI11

PI12

PI13

PI14

PI15

PI16

PI17

IP1

N.C.

STB

OUTPUT GROUP2 P-COMMON

OUTPUT GROUP2 N-COMMON

OUTPUT

GROUP3

OUTPUT GROUP3 P-COMMON

OUTPUT GROUP3 N-COMMON

INPUT

GROUP0

INPUT

GROUP1

INPUT GROUP0 AND ACK, STB P-COMMON

ACK, STB N-COMMON

INPUT GROUP1 P-COMMON

* PI00 is also used as an interrupt signal

Figure 2.7. PIO-16/16L(104) Pin Assignment

Electrical Interface

Isolated I/O : The PIO-16/16L(104) provides isolated input and

output. This board uses external power supply in addition to

drawing 5 VDC from your system’s power supply. You must

make sure that sufficient power is available for proper operation.

PIO-16/16L(104) requires external 12~24 VDC supply for

powering it.

Setup

PIO-16/16L(104) 11

Input Circuit

When the relay contact is switched on, the current goes through the

photo coupler from P-COMMON to Input terminal, then the CPU

reads a data value of 1 from the input port address. Figure 2.8.

below depicts the opto-isolated input circuitry.

INPUT

P-COMMON

RELAY

CONTACT

EXTERNAL

POWER

SUPPLY

12~24V

PHOTO COUPLER

EXTERNAL CIRCUITRY PIO-16/16L(104)

Ω

Figure 2.8. Opto-isolated Input Circuitry

Output Circuit

The current goes through the output terminal from P-COMMON to

the transistor when the CPU writes a data value of 1 to the port

address. Figure 2.9. depicts the opto-isolated output circuitry.

OUTPUT

P-COMMON

EXTERNAL

POWER

SUPPLY

12~24V

PHOTO COUPLER

N-COMMON

LOAD

PIO-16/16L(104) EXTERNAL CIRCUITRY

Figure 2.9. Opto-isolated Output Circuitry

Setup

PIO-16/16L(104)12

STB Input Circuit

Figure 2.10. below depicts the STB signal input circuitry.

STB INPUT

P-COMMON

RELAY

CONTACT

EXTERNAL

POWER

SUPPLY

12~24V

PHOTO COUPLER

EXTERNAL CIRCUITRY PIO-16/16L(104)

Ω

Figure 2.10. STB signal Input Circuitry

ACK Output Circuit

Figure2.11. depicts the ACK signal output circuitry.

ACK OUTPUT

P-COMMON

EXTERNAL

POWER

SUPPLY

12~24V

PHOTO COUPLER

N-COMMON

LOAD

PIO-16/16L(104) EXTERNAL CIRCUITRY

Figure 2.11. ACK signal Output Circuitry

Setup

PIO-16/16L(104) 13

Opto-isolated Output Circuit Protection

You should protect the PIO-16/16L(104) output circuits from

accidental damage when driving external devices. Table 2.3. lists

four recommended methods of protection. Choose the one that

matches your external drive requirements and use the circuitry

depicted in Figure 2.12. below.

Table 2.3. Output Protection Choices

Selection

Protect from excessive coil current A

Protect from high voltage B

Protect from high voltage (limit current) C

Protect from high voltage D

External Device Protection Requirements

RESISTANCE

DIODE

RELAY

COIL

ZENER

DIODE

RELAY

COIL

Figure 2.12. Output Protection Circuits

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Contec PIO-16/16L(104) Owner's manual

Contec PIO-16/16L(104) Owner's manual

Contec PIO-16/16L(104) Owner's manual

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