Advantech PCL-734 User manual

PCL-734
32-channel Isolated
Digital Output Card

Copyright
This documentation is copyrighted 1996 by Advantech Co., Ltd. All
rights are reserved. Advantech Co., Ltd. reserves the right to make
improvements in the products described in this manual at any time
without notice.
No part of this manual may be reproduced, copied, translated or
transmitted in any form or by any means without the prior written
permission of Advantech Co., Ltd. Information provided in this
manual is intended to be accurate and reliable. However, Advantech
Co., Ltd. assumes no responsibility for its use, nor for any infringe-
ments of the rights of third parties which may result from its use.
Acknowledgments
PC-LabCard is a trademark of Advantech Co., Ltd. IBM and PC are
trademarks of International Business Machines Corporation. MS-
DOS, Microsoft C and Quick BASIC are trademarks of Microsoft
Corporation. BASIC is a trademark of Dartmouth College. Intel is a
trademark of Intel Corporation. TURBO C is a trademark of Borland
International.
Part No. 2003734000 1st Edition
Printed in Taiwan April 1996

Contents
Chapter 1 General information ............................................. 1
Introduction........................................................................... 2
Features .................................................................................. 2
Applications ........................................................................... 2
Specifications......................................................................... 3
Digital output .................................................................................3
Register format ..............................................................................3
Dimensions ....................................................................................3
Connectors .....................................................................................3
Power consumption ........................................................................3
Daughterboards .................................................................... 3
Chapter 2 Installation............................................................... 5
Initial inspection.................................................................... 6
Switch and jumper settings .................................................. 6
Base address selection (SW1).......................................................6
Hardwareinstallation ........................................................... 9
Installing the card in your computer..............................................9
Chapter 3 Signal connections.............................................. 1 1
Connector pin assignments ................................................ 12
Isolated Output ................................................................... 13
Chapter 4 Register format ................................................... 1 5
Appendix A PC I/O port address map ................................ 1 7

Chapter 1 General information 1
1
General information
CHAPTER

2PCL-734 User's Manual
Introduction
The PCL-734 offers 32 isolated digital output channels on a PC add-
on card. Its isolated output channels provide 1,000 V of protection.
Each I/O channel corresponds to a bit in a PC I/O port. This makes the
PCL-734 very easy to program.
Features
• 32 isolated digital output channels
• High output driving capacity
• High-voltage isolation on isolated output channels (1,000 VDC)
• Open collector outputs (up to 40 VDC)
• D-type connectors for isolated output channels
• High sink current on isolated output channels (200 mA/channel)
• Suppression diode for inductive loads
Applications
• Industrial ON/OFF control
• Contact closure monitoring
• Switch status sensing
• BCD interfacing
• Digital I/O control
• Industrial and lab automation

Chapter 1 General information 3
Specifications
Digital output
32 optically-isolated outputs
• Output voltage: Open collector 5 to 40 VDC
• Sink current: 200 mA max.
• Isolation voltage: 1,000 VDC
Register format
BASE+0 Isolated DO0~DO7
BASE+1 Isolated DO8~DO15
BASE+2 Isolated DO16~DO23
BASE+3 Isolated DO24~DO31
Dimensions
185 mm x 100 mm
Connectors
DB-37 connector for isolated Digital Output
Power consumption
+5 V: 330 mA typical, 500 mA maximum
Daughterboards
PCLD-880
The PCLD-880 is a universal screw terminal board for industrial
wiring. It can be used with the analog or digital ports of various PC-
LabCards via 20-pin flat cables or shielded round cables with DB-37
connectors.

4PCL-734 User's Manual

Chapter 2 Installation 5
CHAPTER
2
Installation

6 PCL-734 User's Manual
Initial inspection
We carefully inspected the PCL-734 both mechanically and electrical-
ly before shipment. It should be free of marks and in perfect order on
receipt.
As you unpack the PCL-734, check it for signs of shipping damage
(damaged box, scratches, dents, etc.). If it is damaged or fails to meet
specifications, notify our service department or your local sales
representative immediately. Also, call the carrier immediately and
retain the shipping carton and packing material for inspection by the
carrier. We will then make arrangements to repair or replace the unit.
Discharge any static electricity on your body before you touch the
board by touching the back of the system unit (grounded metal).
Remove the PCL-734 card from its protective packaging by grasping
the rear metal panel. Handle the card only by its edges to avoid static
electric discharge which could damage its integrated circuits. Keep the
antistatic package. Whenever you remove the card from the PC, please
store the card in this package for protection.
You should also avoid contact with materials that hold static electricity
such as plastic, vinyl and styrofoam.
Switch and jumper settings
The PCL-734 card has one function switch and three jumper settings.
The following sections tell how to configure the card. You may want
to refer to the opposite page for help identifying card components.
Base address selection (SW1)
You control the PCL-734's operation by writing data to the PC's I/O
(input/output) port addresses. The PCL-734 requires four consecutive
address locations. Switch SW1 sets the card's base (beginning)
address. Valid base addresses range from Hex 200 to Hex 3F0.
However, other devices in your system may be using some of these
addresses.

Chapter 2 Installation 7
Label Function
CN1 Isolated output
CN2 E.GND (external ground)
SW1 Card base address
Card connector, jumper and switch locations

8 PCL-734 User's Manual
We set the PCL-734 for a base address of Hex 300 at the factory. If
you need to adjust it to some other address range, set switch SW1 as
shown in the following table:
Card I/O addresses (SW1)
Range (hex) Switch position
12345678
200 - 203 ¡lllllll
204 - 207 ¡llllll¡
⑨
* 300 - 303 ¡¡llllll
⑨
3F0 - 3F3 ¡¡¡¡¡¡l l
¡= Off l= On * = default
Note: Switches 1-8 control the PC bus address lines as shown
below:
Switch 12345678
Line A9 A8 A7 A6 A5 A4 A3 A2
Appendix A provides a PC I/O port address map to help you avoid the
I/O addresses for standard PC devices.

Chapter 2 Installation 9
Hardware installation
Warning! TURN OFF your PC power supply whenever you
install or remove the PCL-734 or connect and
disconnect cables.
Installing the card in your computer
1. Turn the computer off. Turn the power off to any peripheral
devices such as printers and monitors.
2. Disconnect the power cord and any other cables from the back of
the computer.
3. Remove the system unit cover (refer to your user's guide chassis
user's guide if necessary).
4. Locate the expansion slots at the rear of the unit and choose any
unused slot.
5. Remove the screw that secures the expansion slot cover to the
system unit. Save the screw to secure the interface card retaining
bracket.
6. Carefully grasp the upper edge of the PCL-734 card. Align the
hole in the retaining bracket with the hole on top of the expansion
slot and align the gold striped edge connector with the expansion
slot socket. Press the board firmly into the socket.
7. Secure the PCL-734 using the screw you removed in step 5.
8. Attach any accessories (i.e. a DB-37 cable, etc.) to the PCL-734.
9. Replace the system unit cover. Connect the cables you removed in
step 2. Turn the computer power on.

10 PCL-734 User's Manual

Chapter 3 Signal connections 11
3
Signal connections
CHAPTER

12 PCL-734 User's Manual
Good signal connections can avoid a lot of unnecessary damage to
your valuable PC and other hardware. This chapter gives pin assign-
ments for each of the card's connectors and signal connections for
different applications.
Connector pin assignments
The PCL-734 has a DB-37 connector accessible from the card bracket.
See the figure on page 9 for the location of each connector.
Pin assignments for each connector appear in the following sections.
Abbreviations
IDO Isolated digital output
E.GND External ground for isolated output
PCOM Free wheeling diode common
Connector CN1 – Isolated input and output
IDO 0 1
IDO 2 2
IDO 4 3
IDO 6 4
PCOM 1 5
IDO 9 6
IDO 11 7
IDO 13 8
IDO 15 9
IDO 16 10
IDO 18 11
IDO 20 12
IDO 22 13
PCOM 3 14
IDO 25 15
IDO 27 16
IDO 29 17
IDO 31 18
E.GND 19
20 IDO 1
21 IDO 3
22 IDO 5
23 IDO 7
24 IDO 8
25 IDO 10
26 IDO 12
27 IDO 14
28 PCOM 2
29 IDO 17
30 IDO 19
31 IDO 21
32 IDO 23
33 IDO 24
34 IDO 26
35 IDO 28
36 IDO 30
37 PCOM 4

Chapter 3 Signal connections 13
Isolated Output
Each of the eight isolated digital output channels come equipped with
eight darlington transistors featuring common emitters and integral
suppression diodes for inductive loads.
If the external voltage (5 to 40 V) is connected to each isolated output
channel (IDO) and its isolated digital output turns on (max. of 200
mA per channel), the card's current will sink from the external
voltage. The current through each E.GND should not exceed 50 mA.
If the current for all channels combined exceed 150 mA, return the
current to the external voltage through CN2. The following figure
shows how to connect an external output load to the card's isolated
outputs.
EXTERNAL CIRCUITRYINTERNAL CIRCUITRYVCC
ONE PAIR OF 2803A
NPN
DIODE
VDD
DC(5-40V)
E.GND
PC817C
E.GND
DC/DC
R
R
NPN
LOAD
RR
RIDO
PCOM

14 PCL-734 User's Manual

Chapter 4 Register format 15
4
Register format
CHAPTER

16 PCL-734 User's Manual
Programming the PCL-734 is extremely simple. Each output channel
corresponds to a bit in the card's registers. To turn on an output
channel you write a ‘‘1” to the corresponding bit.
The card requires four I/O register addresses. The address of each
register is specified as an offset from the card's base address. For
example, BASE+0 is the card's base address and BASE+2 is the base
address + two bytes. If the card's base address is 300h, the register's
address is 302h. See Chapter 2 for information on setting the card's
base address.
Register assignments are as follows:
Write Read
BASE+0 IDO bits 0-7 N/A
BASE+1 IDO bits 8-15 N/A
BASE+2 IDO bits 16-23 N/A
BASE+3 IDO bits 24-31 N/A