Advantech PCM-3753I User manual

PCM-3753I
96-channel Digital I/O
PCI-104 Module
User Manual

PCM-3753I User Manual ii
Copyright
This documentation and the software included with this product are
copyrighted 2008 by Advantech Co., Ltd. All rights are reserved.
Advantech Co., Ltd. reserves the right to make improvements in the prod-
ucts described in this manual at any time without notice.
No part of this manual may be reproduced, copied, translated or transmit-
ted 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 infringements 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
and Windows are trademarks of Microsoft Corporation. Intel and Pen-
tium are trademarks of Intel Corporation.
CE Notification
PCM-3753I developed by ADVANTECH CO., LTD., has passed the CE
test for environmental specifications when shielded cables are used for
external wiring. We recommend the use of shielded cables. This kind of
cable is available from Advantech. Please contact your local supplier for
ordering information.
Printed in Taiwan February 2008

iii
Product Warranty (2 years)
Advantech warrants to you, the original purchaser, that each of its prod-
ucts will be free from defects in materials and workmanship for two years
from the date of purchase.
This warranty does not apply to any products which have been repaired or
altered by persons other than repair personnel authorized by Advantech,
or which have been subject to misuse, abuse, accident or improper instal-
lation. Advantech assumes no liability under the terms of this warranty as
a consequence of such events.
Because of Advantech’s high quality-control standards and rigorous test-
ing, most of our customers never need to use our repair service. If an
Advantech product is defective, it will be repaired or replaced at no
charge during the warranty period. For out-of-warranty repairs, you will
be billed according to the cost of replacement materials, service time and
freight. Please consult your dealer for more details.
If you think you have a defective product, follow these steps:
1. Collect all the information about the problem encountered. (For
example, CPU speed, Advantech products used, other hardware
and software used, etc.) Note anything abnormal and list any
onscreen messages you get when the problem occurs.
2. Call your dealer and describe the problem. Please have your man-
ual, product, and any helpful information readily available.
3. If your product is diagnosed as defective, obtain an RMA (return
merchandize authorization) number from your dealer. This allows
us to process your return more quickly.
4. Carefully pack the defective product, a fully-completed Repair and
Replacement Order Card and a photocopy proof of purchase date
(such as your sales receipt) in a shippable container. A product
returned without proof of the purchase date is not eligible for war-
ranty service.
5. Write the RMA number visibly on the outside of the package and
ship it prepaid to your dealer.

PCM-3753I User Manual iv
Technical Support and Assistance
Step 1. Visit the Advantech web site at www.advantech.com/support
where you can find the latest information about the product.
Step 2. Contact your distributor, sales representative, or Advantech's cus-
tomer service center for technical support if you need additional
assistance. Please have the following information ready before
you call:
- Product name and serial number
- Description of your peripheral attachments
- Description of your software (operating system, version, appli-
cation software, etc.)
- A complete description of the problem
- The exact wording of any error messages
Packing List
Before setting up the system, check that the items listed below are
included and in good condition. If any item does not accord with the
table, please contact your dealer immediately.
• 1 x PCM-3753I
• 1 x CD-ROM
• 1 x Startup Manual
Safety Precaution - Static Electricity
Follow these simple precautions to protect yourself from harm and the
products from damage.
1. To avoid electrical shock, always disconnect the power from your
PC chassis before you work on it. Don't touch any components on
the CPU card or other cards while the PC is on.
2. Disconnect power before making any configuration changes. The
sudden rush of power as you connect a jumper or install a card may
damage sensitive electronic components.

v Table of Contents
Contents
Chapter 1 General Information ....................................... 2
1.1 Introduction ....................................................................... 2
1.2 Features ............................................................................. 4
1.3 Applications ...................................................................... 4
1.4 Specifications .................................................................... 5
1.5 Pin Assignments (CN0~CN3) ........................................... 6
Chapter 2 Installation ....................................................... 8
2.1 Initial Inspection................................................................ 8
2.2 Unpacking ......................................................................... 8
2.3 Jumper Settings ................................................................. 9
Figure 2.1:Location of Connectors and Jumpers ........... 9
Table 2.1:Summary of Jumper Settings ....................... 10
2.4 Setting the BoardID Switch (SW2)................................. 11
Table 2.2:BoardID Setting (SW2) ............................... 11
2.4.1 BoardID Register ......................................................... 11
Table 2.3:BoardID register of PCM-3753I .................. 11
2.5 SW3 & SW4 Settings...................................................... 12
2.6 Hardware Installation ...................................................... 12
Chapter 3 Operation ....................................................... 14
3.1 Overview ......................................................................... 14
3.2 Digital I/O Ports .............................................................. 14
3.2.1 Introduction .................................................................. 14
3.2.2 8255 Mode 0 ................................................................ 14
3.2.3 Input/Output Control .................................................... 15
Table 3.1:Bit map of port configuration register ......... 15
3.2.4 Initial Configuration .................................................... 15
3.2.5 Dry Contact Support for Digital Input ......................... 16
Figure 3.1:Wet and dry contact inputs ......................... 16
3.3 Interrupt Functions .......................................................... 17
3.3.1 Introduction .................................................................. 17
3.3.2 IRQ Level .................................................................... 17
3.3.3 Interrupt Control Registers .......................................... 17
Table 3.2:Interrupt control register bit map ................. 18
Figure 3.2:Interrupt sources ......................................... 19
3.3.4 Interrupt Source Control .............................................. 20
Table 3.3:Interrupt mode bit values ............................. 20
3.3.5 Interrupt Triggering Edge Control ............................... 21
Table 3.4:Triggering edge control bit values ............... 21
3.3.6 Interrupt Flag Bit ......................................................... 21
Table 3.5:Interrupt flag bit values ................................ 21
3.3.7 Pattern Match Interrupt Function ................................. 22
3.3.8 Change of State Interrupt Function .............................. 23

PCM-3753I User Manual vi

2
CHAPTER
1
General Information

PCM-3753I User Manual 2
Chapter 1 General Information
1.1 Introduction
The PCM-3753I is a 96-ch digital I/O PCI-104 module. The card emu-
lates mode 0 of the 8255 PPI chip, but the buffered circuits offer a higher
driving capability than the 8255. The 96 I/O lines are divided into twelve
8-bit I/O ports: A0, B0, C0, A1, B1, C1, A2, B2, C2, A3, B3 and C3.
Users can configure each port as input or output via software.
Dry Contact Support for Digital Input
Each digital input channel at the PCM-3753I accepts either 0 ~ 5 VDC
wet contact or dry contact inputs. This dry contact capability allows the
channel to respond to changes in external circuitry (e.g., the closing of a
switch in the external circuitry) when no voltage is present in the external
circuit.
Reset Protection Fulfills the True Requirement of Industrial
Applications
When the system is hot reset (the power is not turned off), the PCM-
3753I can either retain the last I/O port settings and outputs value, or
return to its default configuration, depending on the jumper setting. This
function protects the system from wrong operations during unexpected
system resets.

3 Chapter1
Interrupt Functions Ensure Faster System Response
Two lines of each port C (i.e., ports C0, C1, C2 and C3) are connected to
an interrupt circuit. The “Interrupt Control Register” of the PCM-3753I
controls how these signals generate an interrupt. More than one interrupt
request signals can be generated at the same time, and then the software
can process these request signals by ISR. The multiple interrupt sources
provide the card with more capability and flexibility.
The PCM-3753I also provides “Pattern Match” interrupt function for port
A0. The card monitors the states of port A0 and compares them with a
pre-set pattern. When the received state matches the pre-set
pattern, the PCM-3753I generates an interrupt signal to the system.
“Change of State” interrupt function is provided at port B0. When any
signal line of port B0 changes its state, the card generates an interrupt to
the system to handle this event.
These interrupt functions release the CPU from the burden of pulling all
I/O points, enabling a PC to handle more I/O points with higher
performance.

PCM-3753I User Manual 4
1.2 Features
• 96 TTL digital I/O lines
• Emulates mode 0 of 8255 PPI
• Buffered circuits for higher driving capacity than 8255
• Multiple-source interrupt handling
• Output status read-back
• “Pattern match” and “Change of state” interrupt functions for critical
I/O monitoring
• Keeps I/O setting and digital output values when hot system reset
• Supports dry contact and wet contact
• 50-pin pin header
• BoardID switch
1.3 Applications
• Industrial AC/DC I/O devices monitoring and controlling
• Relay and switch monitoring and controlling
• Parallel data transfer
• TTL, DTL and CMOS logic signal sensing
• Indicator LED driving

5 Chapter1
1.4 Specifications
I/O Channels 96 digital I/O lines
Programming Mode 8255 PPI mode 0
Input Signal Logic level 0: 0.8 V max.
Logic level 1: 2.0 V min.
Output Signal Logic level 0: 0.44 V max. @ 24 mA (sink)
Logic level 1: 3.76 V min. @ 24 mA (source)
Transfer Rate 1.6 Mbytes/sec
(tested under DOS, K6 300MHz CPU)
Power Consumption +5 V @ 105 mA (typical)
+5 V @ 210 mA (max.)
Operating Temperature 0 ~ 60° C (32 ~ 140°F)
(refer to IEC 68-2-1, 2)
Storage Temperature -20 ~ 70° C (-4 ~ 158°F)
Operating Humidity 5 ~ 95%RH non-condensing
(refer to IEC 68-2-3)
Connector Four 50-pin box header
Dimensions 96 x 90 mm (3.8” x 3.5”)

PCM-3753I User Manual 6
1.5 Pin Assignments (CN0~CN3)

2
CHAPTER
2
Installation

PCM-3753I User Manual 8
Chapter 2 Installation
2.1 Initial Inspection
Before starting to install the PCM-3753I, make sure there is no
visible damage on the card. We carefully inspected the card both
mechanically and electrically before shipment. It should be free of marks
and in perfect order on receipt.
As you unpack the PCM-3753I, check it for signs of shipping
damage (damaged box, scratches, dents, etc.). If it is damaged or fails to
meet its specifications, notify our service department or your local sales
representative immediately. Also, call the carrier immediately and retain
the shipping carton and packing materials for inspection by the carrier.
We will then make arrangements to repair or replace the unit.
2.2 Unpacking
The PCM-3753I contains components that are sensitive and
vulnerable to static electricity. Discharge any static electricity on your
body to ground by touching the back of the system unit (grounded metal)
before you touch the board.
Remove the PCM-3753I card from its protective packaging by grasping
the card's rear panel. Handle the card only by its edges to avoid static dis-
charge 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 its protection.
You should also avoid contact with materials that hold static electricity
such as plastic, vinyl and styrofoam.

9 Chapter2
2.3 Jumper Settings
We designed the PCM-3753I with ease-of-use in mind. It is a "plug and
play" card, i.e. the system BIOS assigns the system resources such as
base address and interrupt automatically. The following section describes
how to configure the card. You may want to refer to the figure below for
help in identifying card components.
Figure 2.1: Location of Connectors and Jumpers
Jumper Settings to Set Ports as Input or Output by Software
When the two pins of jumpers JPA0, JPB0, JPC0L, JPC0H, JPA1, JPB1,
JPC1L, JPC1H, JPA2, JPB2, JPC2L, JPC2H, JPA3, JPB3, JPC3L or
JPC3H are not shorted (i.e., by setting a jumper), the corresponding ports
are set to be configurable as input or output ports by software. (JPA0
means jumper for port A0, JPB0 means jumper for port B0, etc. See
Table 2-1) If jumper JP1 is not enabled (i.e., by shorting the upper two
pins of JP1), all ports configured by software are automatially set as
input ports during system startup a reset, with a default signal level of
logic 1(high). (But see Jumper JP1 discussion below.)

PCM-3753I User Manual 10
Using Jumpers to Set Ports as Output Ports
By shorting the two pins of the jumpers JPA0, JPB0, JPC0L, JPC0H,
JPA1, JPB1, JPC1L, JPC1H, JPA2, JPB2, JPC2L, JPC2H, JPA3, JPB3,
JPC3L or JPC3H, a user sets the corresponding ports to be output ports.
(JPA0 means jumper for port A0, JPB0 means jumper for port B0, etc.)
Shorting the two pins of a port's jumper disables the port from being soft-
ware configurable as an input port. The initial state of each of these ports
after system power on or reset will be logic 0 (voltage low), unless
jumper JP1 determines otherwise. (See JP1 below.)
Jumper JP1 Restores Ports to Their Condition Prior to Reset
Jumper JP1 gives the PCM-3753I a new and valuable capability. With
JP1 enabled (i.e., by shorting the lower two pins of JP1), the
PCM-3753I "memorizes" all port I/O settings and output values, and, in
the event of a "hot" reset, the settings and output values present at the port
just prior to reset are restored to each port following reset. This feature
applies to both ports set by software, and to ports configured as output
ports via jumper. Depending on the application, this capability may allow
a card to be reset without requiring a complete shutdown of processes
controlled by the card (since port values are left unchanged and are inter-
rupted only momentarily).
Complete loss of power to the chip clears chip memory. Thus, even if
JP1 is enabled, if the power to the card is disconnected, the card's initial
power-on state will be the state of an input port with voltage high input
(for software-set ports) or the state of an output port with voltage low out-
put (for jumper-set ports).
When jumper JP1 is not enabled both power-off and reset results in ports
returning to the state of an input port with voltage high input or returning
to the state of output port with voltage low output (for jumper-set ports).
Table 2.1: Summary of Jumper Settings
Jumpers Function Description
JP1 Keep the last digital output
status after hot reset
JP1 Load default configuration while
hot reset (Default)

11 Chapter2
2.4 Setting the BoardID Switch (SW2)
You can use the BoardID command (0x20) to get the board’s unique iden-
tifier. PCM-3753I has a built-in BoardID SMD switch (SW2), which is
used to define each card's unique identifier. You can determine the identi-
fier in the register as shown in Table 2.2. When there are multiple cards
on the same chassis, this BoardID setting is useful for identifying each
card's device number. We set the PCM-3753I’s BoardID switch to 0 at the
factory. If you need to adjust this setting, please see below.
2.4.1 BoardID Register
You can determine the BoardID setting in the register as shown below.
Table 2.2: BoardID Setting (SW2)
BoardID (DEC) Switch Position
ID3 ID2 ID1 ID0
0* ON ON ON ON
1ONONONOFF
2ONONOFFON
3ONONOFFOFF
4 ON OFF ON ON
5 ON OFF ON OFF
6ONOFFOFFON
7 ON OFF OFF OFF
8 OFF ON ON ON
9 OFF ON ON OFF
10 OFF ON OFF ON
11 OFF ON OFF OFF
12 OFF OFF ON ON
13 OFF OFF ON OFF
14 OFF OFF OFF ON
15 OFF OFF OFF OFF
* : Default
Table 2.3: BoardID register of PCM-3753I
Base+20 3 2 1 0
Abbreviation ID3 ID2 ID1 ID0
Note: ID0: The least significant bit (LSB) of BoardID
ID3: The most significant bit (MSB) of BoardID

PCM-3753I User Manual 12
2.5 SW3 & SW4 Settings
When set to “On (0)”, the Digital Port will be set to Output.
When set to “Off (1)”, the Digital Port will be set by software. (Default)
2.6 Hardware Installation
1. Turn the PC.s power off. Turn off the power of 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 (see the user.s guide for your chassis
if necessary).
4. Remove the CPU card from the chassis (if necessary) to gain access
to the card.s PCI-104 connector.
5. Connect connector J1 of the PCM-3753I card to the PCI-104 con-
nector. Carefully align the pins with the PC-104 connector. Slide
the module into the connector. The module pins may not slide all
the way into the connector; do not force the pins into place, or the
module may be damaged.
6. Fasten the module to the CPU card by using the included brass
screw. Screw the brass spacer into the threaded hole on the CPU
card. Do not tighten too much, or the threads may be damaged.
7. Attach any accessories to the PCM-3753I using 50 pin flat cables.
8. Reinstall the CPU card and replace the system unit cover. Recon-
nect the cables you removed in step 2. Plug in and turn on the
power. This completes the hardware installation. Install the soft-
ware driver as described in the following section.

2
CHAPTER
3
Operation

PCM-3753I User Manual 14
Chapter 3 Operation
3.1 Overview
This chapter describes the operating characteristics of the PCM-3753I.
The driver software bundled with this card allows a user to access all of
the card's functions without register level programming. Please see the
User's Manual included on the driver CD-ROM for more information.
For users who prefer to implement their own bit-level
programming to drive the card's functions, information useful for making
such a program is included in this chapter.
3.2 Digital I/O Ports
3.2.1 Introduction
The PCM-3753I each emulate four 8255 programmable
peripheral interface (PPI) chips in mode 0, but with higher driving
capability than a standard 8255 chip. Each of these 8255 chip emulators
has 24 programmable I/O pins that are divided into three 8-bit ports. The
total 96 digital I/O pins on the PCM-3753I is divided into 12 ports, desig-
nated PA0, PB0, PC0, PA1, PB1, PC1, PA2, PB2, PC2, PA3, PB3 and
PC3. Each port can be programmed as an input or an output port. The I/
O pins in port A0 are designated PA00, PA01,..., PA07; the pins in port
B0 are designated PB00, PB01,..., PB07, etc. These port names are used
both in this manual and in the software library. Please refer to Section
1.5, Pin Assignments.
3.2.2 8255 Mode 0
The basic 8255 mode 0 features included on the PCM-3753I cards are:
• 8-bit I/O ports - port A (PA) and port B (PB)
• Port C is divided into two nibble-wide (4-bit) I/O ports - PC upper and
PC lower
• Any port can be used for either input or output.
• Output status can be read back.