Black Box IC187C manuale d’uso

CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mail order: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com AUGUST 20[...]

1 FCC AND IC ST A TEMENTS FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO FREQUENCY INTERFERENCE ST A TEMENTS 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[...]

2 2-POR T RS-232/422/485 PCI HOST ADAPTER EUROPEAN UNION DECLARA TION 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 - “[...]

3 NOM ST A TEMENT NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY ST A TEMENT 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 [...]

4 2-POR T 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[...]

5 T ABLE OF CONTENTS CONTENTS 1. Specifications............................................................................................7 2. Introduction .............................................................................................8 2.1 Overview .....................................................................................[...]

6 2-POR T RS-232/422/485 PCI HOST ADAPTER CONTENTS (continued) Appendix C: Electrical Interfaces ...............................................................28 C.1 RS-232 .................................................................................................28 C.2 RS-422 .................................................................[...]

7 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 C[...]

8 2-POR T 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 communica[...]

9 CHAPTER2: Introduction 2.3 Factory Default Settings The Adapter’s factory-default settings are as follows: T able 2-1. Factor y-Default Settings Port # Electrical Specification Port 1 RS-232 Port 2 RS-232 For your reference, record installed Adapter settings below. T able 2-2. Installed Adapter Settings Port # Electrical Specification Port 1 Po[...]

10 2-POR T 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[...]

11 CHAPTER 3: Card Setup Examples on the following pages describe all of the valid settings for J1B and J2B. Interface Mode Examples J1D – J4D Figure 3-1. Headers J1B and J2B set for RS-422. Figure 3-2. Headers J1B and J2B set for RS-485 “Auto” with “No Echo.” Figure 3-3. Headers J1B and J2B set for RS-485 “Auto” with “Echo.” AT R[...]

12 2-POR T RS-232/422/485 PCI HOST ADAPTER Figure 3-4. Headers J1B and J2B set for RS-485 “RTS” with “No Echo.” 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[...]

13 CHAPTER 3: Card Setup T able 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. Figure 3-6. Header[...]

14 2-POR T 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. Figure 3-7. Headers E1 through [...]

15 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[...]

16 2-POR T 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). 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 s[...]

17 CHAPTER 3: Card Setup If your communications package allows the use of baud-rate divisors, choose the appropriate divisor from the following table: T able 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 [...]

18 2-POR T 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. T able 3-4. Baud Rates for the “Div 2” Mode For this Data Rate Choose this Baud Rate 1200 bps 600 bps [...]

19 CHAPTER 3: Card Setup T able 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[...]

20 2-POR T RS-232/422/485 PCI HOST ADAPTER 4. Installation IMPOR T ANT You MUST set up the operating system BEFORE you physically install the Card. 4.1 Setting Up the Operating System If you are installing the PCI adapter in DOS, OS/2 ® , or QNX, please refer to the appropriate directory on one of the Serial Utilities Disks for instructions. 4.1.1[...]

21 CHAPTER 4: Installation 5. Next, double-click on the third I/O range. Highlight the entire I/O range and type 02e8–02ef for COM4. Again, Windows will inform you that you have made modifications that may affect other devices. Click OK. Following these steps will change the COM: number assignments on the first two ports to COM3 and COM4. 4.1.3 W[...]

22 2-PORT RS-232/422/485 PCI HOST ADAPTER 5. T roubleshooting 5.1 The Serial Utility Diskette The Adapter comes with a Serial Utility Diskette that has diagnostic software on it. We recommend that you always use this software first when you troubleshoot problems, because it can help resolve most common problems related to software and operating-sys[...]

23 CHAPTER 5: Troubleshooting 5.2 Calling Black Box If you determine that the Adapter is malfunctioning, do not attempt to alter or repair it . It contains no user-serviceable parts. Contact Black Box Technical Support at 724-746-5500. Before you do, make a record of the history of the problem. We will be able to provide more efficient and accurate[...]

24 2-POR T RS-232/422/485 PCI HOST ADAPTER Appendix A: Interrupt Handling A.1 The Purpose and Early History of Interrupts A good analogy of a PC interrupt would be the phone ringing. The phone “bell” is a request for us to stop what we are currently doing and take up another task (speak to the person on the other end of the line). This is the s[...]

25 APPENDIX A: Interrupt Handling A.2 Why Use an Interrupt Status Port (ISP)? The answer to the polling inefficiency was the Interrupt Status Port (ISP). The ISP is a read-only 8-bit register that sets a corresponding bit when an interrupt is pending. Port 1’s interrupt line corresponds with bit D0 of the status port, Port 2’s with D1, etc. The[...]

26 2-POR T RS-232/422/485 PCI HOST ADAPTER Appendix B: Connector Pinouts B.1 RS-232 T able B-1. Pinout of Connector Set to RS-232 Abbreviation Name Pin # Mode TD Transmit Data 3 Output RTS Request To Send 7 Output DTR Data Term Ready 4 Output GND Ground 5 RD Receive Data 2 Input DCD Data Carrier Detect 1 Input DSR Data Set Ready 6 Input CTS Clear T[...]

27 APPENDIX B: Connector Pinouts B.2 RS-422/485 T able A-2. Pinout of Connector Set to RS-422/485 Abbreviation Name Pin # Mode GND Ground 5 TX + Transmit Data Positive 4 Output TX- Transmit Data Negative 3 Output RTS+ Request To Send Positive 6 Output RTS- Request To Send Negative 7 Output RX+ Receive Data Positive 1 Input RX- Receive Data Negative[...]

28 2-POR T RS-232/422/485 PCI HOST ADAPTER Appendix C: Electrical Inter faces C.1 RS-232 Quite possibly the most widely used communication standard is RS-232. This implementation has been defined and revised several times and is often referred to as EIA/TIA-232. The IBM PC/AT computer defined the RS-232 port on a 9-pin D-subminiature connector, and[...]

29 APPENDIX C: Asynchronous Communications C.3 RS-485 RS-485 is backward-compatible with RS-422; however, it is optimized for partyline or multidrop applications. The output of the RS-422/485 driver is capable of being Active (enabled) or Tristate (disabled). This capability allows multiple ports to be connected in a multidrop bus and selectively p[...]

30 2-POR T RS-232/422/485 PCI HOST ADAPTER Appendix D: Asynchronous Communication In serial data communication, individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character. Data rate, error checking, handshaking, and character framing (start/stop bits) are pre- defined and must correspond[...]

31 APPENDIX D: Asynchronous Communication Because each bit in asynchronous communications is sent consecutively, it is easy to generalize asynchronous communications by stating that each character is wrapped (framed) by pre-defined bits to mark the beginning and end of the serial transmission of the character. The data rate and communication parame[...]

32 2-PORT RS-232/422/485 PCI HOST ADAPTER Appendix E: Board Layout Figure E-1. Board layout. GD75232 U1 GD75232 U2 75175 U4 E5 C1 C3 R4 R5 R8 R9 R3 R5 R7 C4 U5 U6 C6 J1 C7 R27 R28 C8 C9 U7 C10 R29 R30 C12 C1 1 93CS46 R1 C13 C14 C15 C16 C17 J2C Y1 R8 U8 P1 PCI9050 XC9536-7201 7201 + MADE IN USA DIV1 DIV2 DIV4 DIV1= DIVIDE BY 1 DIV2= DIVIDE BY 2 DIV4[...]

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