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AUGUST 2000
IC133C-R2
IC187C
2-Port RS-232/422/485
PCI Host Adapter
CUSTOMER
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
SUPPORT
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
INFORMATION
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
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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 rul
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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 - Ge
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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 aparat
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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
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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.............
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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:
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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 MT
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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
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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 9
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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) mu
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CHAPTER 3: Card Setup Examples on the following pages describe all of the valid settings for J1B and J2B. Interface Mode Examples J1D – J4D AT RT NE Figure 3-1. Headers J1B and J2B set for RS-422. AT RT NE Figure 3-2. Headers J1B and J2B set for RS-485 “Auto” with “No Echo.” AT RT NE Figure 3-3. Headers J1B and J2B set for RS-485 “Auto” with “Echo.” 11
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2-PORT RS-232/422/485 PCI HOST ADAPTER AT RT NE Figure 3-4. Headers J1B and J2B set for RS-485 “RTS” with “No Echo.” AT RT NE Figure 3-5. Headers J1B and J2B set for RS-485 “RTS” with “Echo.” 3.2 Address and IRQ selection The Adapter is automatically assigned I/O addresses and IRQs by your motherboard BIOS. Only the I/O address may be modified by the user. Adding or removing other hardware may change the assignment of I/O addresses and IRQs. 3.3 Line Termination Typically, each end of the RS-485
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CHAPTER 3: Card Setup Table 3-1. Jumper Operation Name Function P Adds or removes the 1K-ohm pull-down resistor in the RS-422/RS-485 receiver circuit (Receive data only). T Adds or removes the 120-ohm termination. L Connects the TX+ to RX+ for RS-485 two-wire operation. L Connects the TX- to RX- for RS-485 two-wire operation. P P T L L Figure 3-6. Headers J1A and J2A, which control line termination. 13
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2-PORT RS-232/422/485 PCI HOST ADAPTER 3.4 Electrical Interface Selection Each port on the Adapter has the ability to be used in either RS-232 or RS-422/485 mode. This is selectable via four 24 pin DIP-shunts at E1-E4. Please use the following illustration to aid in the configuration of your electrical interface. E1 E2 E3 E4 RS-232 RS-422/485 E1 E2 E3 E4 RS-232 and RS-422/485 Figure 3-7. Headers E1 through E4, which control electrical-interface selection. 14 RS-422 RS-232 RS-422 RS-232 Port 2
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CHAPTER 3: Card Setup 3.5 Clock Modes The Adapter employs a clocking option that allows you to select from “divide by 4,” “divide by 2,” and “divide by 1” clocking modes. These modes are selected at Headers J1C through J4C. To select the baud rates commonly associated with COM ports (for example, 2400, 4800, 9600, and 19,200 bps, and so on up to 115.2 kbps), place the jumper in the “divide by 4” mode (marked DIV4). DIV1 DIV2 DIV4 Figure 3-8. Clocking mode “divide by 4.” To double these rates, s
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2-PORT RS-232/422/485 PCI HOST ADAPTER To enable the Adapter to reach its maximum possible data rate, 460.8 Kbps, place the jumper in the “divide by 1” position (marked DIV1). DIV1 DIV2 DIV4 Figure 3-10. Clocking mode “divide by 1.” 3.6 Baud Rates and Divisors for the “Div1” Mode The following table shows some common data rates and the rates you should choose to match them if you’re using the Adapter in the “Div1” mode. Table 3-2. Baud Rates for the “Div 1” Mode For this Data Rate Choose this Da
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CHAPTER 3: Card Setup If your communications package allows the use of baud-rate divisors, choose the appropriate divisor from the following table: Table 3-3. Divisors for the “Div 1” Mode For this Data Rate Choose this Divisor 1200 bps 384 2400 bps 192 4800 bps 96 9600 bps 48 19.2 kbps 24 38.4 kbps 12 57.6 kbps 8 115.2 kbps 4 230.4 kbps 2 460.8 kbps 1 17
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2-PORT RS-232/422/485 PCI HOST ADAPTER 3.7 Baud Rates and Divisors for the “Div2” mode The following table shows some common data rates and the rates you should choose to match them if you’re using the adapter in the “Div2” mode. Table 3-4. Baud Rates for the “Div 2” Mode For this Data Rate Choose this Baud Rate 1200 bps 600 bps 2400 bps 1200 bps 4800 bps 2400 bps 9600 bps 4800 bps 19.2 kbps 9600 bps 38.4 kbps 19.2 kbps 57.6 kbps 28.8 kbps 115.2 kbps 57.6 kbps 230.4 kbps 115.2 kbps 18
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CHAPTER 3: Card Setup Table 3-5. Divisors for the “Div 2” Mode For this Data Rate Choose this Divisor 1200 bps 192 2400 bps 96 4800 bps 48 9600 bps 24 19.2 kbps 12 38.4 kbps 8 57.6 kbps 4 115.2 kbps 2 230.4 kbps 1 19
