Black Box IC187C, IC133C-R2 User Manual
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AUGUST 2000
IC133C-R2
IC187C
2-Port RS-232/422/485
PCI Host Adapter
1
FCC AND IC STATEMENTS
FEDERAL COMMUNICATIONS COMMISSION
AND
INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy and if not
installed and used properly, that is, in strict accordance with the manufacturer’s
instructions, may cause interference to radio communication. It has been tested
and found to comply with the limits for a Class A computing device in accordance
with the specifications in Subpart J of Part 15 of FCC rules, which are designed to
provide reasonable protection against such interference when the equipment is
operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct
the interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.
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2-PORT RS-232/422/485 PCI HOST ADAPTER
EUROPEAN UNION DECLARATION OF CONFORMITY
Products bearing the CE Label fulfill the requirements of the EMC directive
(89/336/EEC) and of the low-voltage directive (73/23/EEC) issued by the
European Commission.
To obey these directives, the following European standards must be met:
• EN55022 Class A - “Limits and methods of measurement of radio interference
characteristics of information technology equipment”
• EN50082-1 - “Electromagnetic compatibility - Generic immunity standard”
Part 1: Residential, commercial and light industry
• EN60950 (IEC950) - “Safety of information technology equipment, including
electrical business equipment”
Use high quality shielded cabling with this product to maintain compliance with
the EMC directive.
3
NOM STATEMENT
NORMAS OFICIALES MEXICANAS (NOM)
ELECTRICAL SAFETY STATEMENT
INSTRUCCIONES DE SEGURIDAD
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes
de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para
referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones
de operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo,
cerca de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc.
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que
sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea
recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá
a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser
referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,
alfombra o superficie similar puede bloquea la ventilación, no se debe
colocar en libreros o gabinetes que impidan el flujo de aire por los orificios
de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor
como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del
tipo descrito en el instructivo de operación, o como se indique en el aparato.
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2-PORT RS-232/422/485 PCI HOST ADAPTER
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización
del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que
no sean pisados ni pellizcados por objetos colocados sobre o contra ellos,
poniendo particular atención a los contactos y receptáculos donde salen
del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las
recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos
de las lineas de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo
no sea usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean
derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio
en su desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.
TRADEMARKS
The trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.
5
TABLE OF CONTENTS
CONTENTS
1. Specifications............................................................................................7
2. Introduction .............................................................................................8
2.1 Overview .............................................................................................8
2.2 What’s Included .................................................................................8
2.3 Factory Default Settings.....................................................................9
3. Card Setup................................................................................................10
3.1 RS-485 Enable Modes ........................................................................10
3.2 Address and IRQ Selection ...............................................................12
3.3 Line Termination...............................................................................12
3.4 Electrical Interface Selection ............................................................14
3.5 Clock Modes.......................................................................................15
3.6 Baud Rates and Divisors for the “Div 1” Mode ................................16
3.7 Baud Rates and Divisors for the “Div 2” Mode ................................18
4. Installation................................................................................................20
4.1 Setting Up the Operating System .....................................................20
4.1.1 Windows 3.1x ...........................................................................20
4.1.2 Windows 95/98 ........................................................................20
4.1.3 Windows NT .............................................................................21
4.1.4 DOS...........................................................................................21
4.1.5 Other Operating Systems ........................................................21
4.2 Installing the Hardware.....................................................................21
5. Troubleshooting ......................................................................................22
5.1 The Serial Utility Diskette ................................................................22
5.2 Calling Black Box..............................................................................23
5.3 Shipping and Packaging...................................................................23
Appendix A: Interrupt Handling ...............................................................24
A.1 The Purpose and Early History of Interrupts..................................24
A.2 Why Use an ISP?................................................................................25
Appendix B: Connector Pinouts ................................................................26
B.1 RS-232.................................................................................................26
B.2 RS-422/485 ........................................................................................27
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2-PORT RS-232/422/485 PCI HOST ADAPTER
CONTENTS (continued)
Appendix C: Electrical Interfaces...............................................................28
C.1 RS-232.................................................................................................28
C.2 RS-422.................................................................................................28
C.3 RS-485.................................................................................................29
Appendix D: Asynchronous Communications..........................................30
Appendix E: Board Layout..........................................................................32
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CHAPTER 1: Specificatiobns
1. Specifications
Communication Chip — IC133C-R2: 16550 UART (optionally, you can
remove this UART and install a 16950 UART for better performance);
IC187C: 16950 UART
Data Rate — IC133C-R2: Up to 460.8 kbps; IC187C: 460.8 kbps and above
Distance — Up to 4000 ft. (1219.2 m)
Number of Ports — (2) RS-232/422/485
Connectors — (2) DB9 male
Temperature — Operating: 32 to 122°F (0 to 50°C); Storage: -4 to +158°F
(-20 to +70°C)
Relative Humidity — 10 to 90%, noncondensing
MTBF — Greater than 150,000 hours
Power — +12 VDC @ 50 mA, -12 VDC @ 50 mA, +5 VDC @ 480 mA
Size — 4.2"H x 5"L (10.7 x 12.7 cm)
Weight — 1.3 lb. (0.6 kg)
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2-PORT RS-232/422/485 PCI HOST ADAPTER
2. Introduction
2.1 Overview
The 2-Port RS-232/422/485 PCI Host Adapter is a two-channel PCI-bus serial I/O
adapter for PCs and compatibles that supports data rates up to 460.8 kbps. It has
two very versatile asynchronous serial ports: They are field-selectable as either
RS-232 ports (suitable for communication with modems, printers and plotters) or
RS-422/485 ports (suitable for industrial automation and control applications).
Configure both of the Adapter’s ports as RS-232 for standard serial COM-port
requirements. Choose the RS-422 mode for long-distance device connections up to
4000 ft. (1219.2 m) where noise immunity and high data integrity are essential.
Select RS-485 and capture data from multiple peripherals in a RS-485 multidrop
network. Up to 31 RS-485 devices can be connected to each port to automate your
data collection. You can even mix the ports in any of the interface combinations to
provide maximum flexibility to your application.
In both RS-232 and RS-422 modes, the card works seamlessly with the standard
operating-system serial driver. In RS-485 mode, our special auto-enable feature
allows the RS-485 ports to be viewed by the operating system as a COM port. This
allows the standard COM driver to be used for RS-485 communications. The onboard hardware automatically handles the RS-485 driver enable.
The IC133C-R2 adapter uses a 16550 UART. This chip features programmable
baud rates, data format, interrupt control and a 16-byte input and output FIFO.
You can replace the 16550 with a 16950 UART for even better performance. The
IC187C comes with the 16950 UART already installed.
2.2 What’s Included
The Adapter is shipped with the following items. If any of these items are missing
or damaged, contact the supplier.
• (1) 2-Port RS-232/422/485 Serial Host Adapter
• (2) 3.5” Serial Utility Diskettes
• This User Manual
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CHAPTER2: Introduction
2.3 Factory Default Settings
The Adapter’s factory-default settings are as follows:
Table 2-1. Factory-Default Settings
Port # Electrical Specification
Port 1 RS-232
Port 2 RS-232
For your reference, record installed Adapter settings below.
Table 2-2. Installed Adapter Settings
Port # Electrical Specification
Port 1
Port 2
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2-PORT RS-232/422/485 PCI HOST ADAPTER
3. Card Setup
NOTE
In all cases J1x refers to settings for the first port and J2x refer
to settings for the second port.
3.1 RS-485 Enable Modes
RS-485 is ideal for multidrop or network environments. RS-485 requires a tri-state
driver that will allow the electrical presence of the driver to be removed from the
line. The driver is in a tri-state or high-impedance condition when this occurs.
Only one driver may be active at a time, and the other driver(s) must be tri-stated.
The output modem control signal Request To Send (RTS) is typically used to
control the state of the driver. Some communication-software packages refer to
RS-485 as RTS enable or RTS block mode transfer.
One of the unique features of the Adapter is the ability to be RS-485 compatible
without the need for special software or drivers. This ability is especially useful in
Windows, Windows NT, and OS/2 environments, where the lower-level I/O
control is abstracted from the application program. This ability means that the user
can effectively use the Adapter in a RS-485 application with existing (i.e. standard
RS-232) software drivers.
Headers J1B and J2B are used to control the RS-485 mode functions for the
driver circuit. The selections are “RTS” enable (marked “RT”) or “Auto” enable
(marked “AT”). The “Auto” enable feature automatically enables/disables the
RS-485 interface. The “RTS” mode uses the “RTS” modem-control signal to enable
the RS-485 interface and provides backward compatibility with existing software
products.
Position 3 (marked “NE”) of J1B and J2B is used to control the RS-485
enable/disable functions for the receiver circuit and determine the state of the
RS-422/485 driver. The RS-485 “Echo” is the result of connecting the receiver
inputs to the transmitter outputs. Every time a character is transmitted, it is also
received. This can be beneficial if the software can handle echoing (i.e. using
received characters to throttle the transmitter) or it can confuse the system if the
software does not. To select the “No Echo” mode, select the position marked “NE.”
For RS422/530/449 compatibility, remove the jumpers at J1B and J2B.
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