Gebruiksaanwijzing /service van het product IC266A van de fabrikant Black Box
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SEPTEMBER 2001 IC266A USB Single-P ort Hub (RS-422/485) CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500 ) FREE technical support 24 hours a .
1 FCC AND IC RFI STATEMENTS/CE NOTICE FEDERAL COMMUNICATIONS COMMISSION and INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency ener.
2 USB SINGLE-PORT HUB (RS-422/485) 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 NOM STATEMENT 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 .
4 USB SINGLE-PORT HUB (RS-422/485) TRADEMARKS USED IN THIS MANUAL UL ® is a registered trademark of Underwriters Laboratories Incorporated. Windows ® is a registered trademark of Microsoft Corporation. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
5 Contents Chapter Page 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.2 Connector Pin Assignments (DB25 Male) . . . 7 2. Introduction . . . .
6 USB SINGLE-PORT HUB (RS-422/485) 1. Specifications 1.1 General Manufacturing: UL ® 94V0 rating; 100% electrically tested; solder mask over bare copper or solder mask over tin nickel.
7 CHAPTER 1: Specifications 1.2 Connector Pin Assignments (DB25 Male) Name Pin # Mode GND Ground 7 — RDB RX+ Receive Positive 16 Input RDA RX- Receive Negative 3 Input CTSB CTS+ Clear to Send Positi.
8 USB SINGLE-PORT HUB (RS-422/485) 2. Intr oduction 2.1 Overview The USB Single-Port Hub (RS-422/485) equips the PC with one USB to RS-530/422/485 asynchronous serial port, providing a versatile interface for common RS-530/422/485 needs.
9 CHAPTER 2: Introduction 2.3 Technical Description The USB Single-Port Hub (RS-422/485) uses a USB UART. This chip features programmable baud rate, data format, a 128-byte dual-port TX buffer, and a 384-byte dual-port RX buffer. The RS-422/485 transceiver supports data rates up to 921.
10 USB SINGLE-PORT HUB (RS-422/485) 3. Installation 3.1 Operating System Installation Choose Install Software at the beginning of the CD. Select the Serial I/O software drivers and install SeaCOM . 3.2 System Installation The screen shots pictured in this section are taken from a Windows ® Me installation.
11 CHAPTER 3: Installation Connect the USB Single-Port Hub (RS-422/485) to an upstream Host or Hub. Figure 3-1. New Hardware Found screen. This indicates that the system has recognized the new device and will now locate a driver. Figure 3-2. Add New Hardware Wizard screen.
12 USB SINGLE-PORT HUB (RS-422/485) Since you have already installed the software by running “Setup,” simply click “Next” to proceed. The drivers that were installed during setup will automatically be used to configure the adapter. Figure 3-3.
13 CHAPTER 3: Installation Figure 3-4. System Properties, Device Manager tab. You can access your new COM port by using the assigned COM identifier. In this case, it is COM5: but this assignment will vary from system to system. At this point, the hardware is recognized.
14 USB SINGLE-PORT HUB (RS-422/485) 4. Configuration 4.1 Electrical Interface Selection The port on the USB Single-Port Hub (RS-422/485) can be used as RS-530/422/485, RS-422, or 2-wire RS-485. This is selectable via the DIP-switch SW1. The chart below describes each of the positions’ functions.
15 CHAPTER 4: Configuration 4.2 Switch Examples Please use these examples to configure your USB Single- Port Hub (RS-422/485). Figure 4-1. RS-530/422, 4-wire 485 master (default). Figure 4-2. RS-485, 2-wire with echo. Figure 4-3. RS-485, 2-wire no echo.
16 USB SINGLE-PORT HUB (RS-422/485) Appendix A. T r oubleshooting A.1 Before Calling Technical Support Serial Utility test software is supplied with the USB Single-Port Hub (RS-422/485) and will be used in the troubleshooting procedures.
17 APPENDIX A: Troubleshooting Modem Control Signals, a full pin loopback plug will be required. Details on loopback plugs are included within WinSSD. 4. When testing the USB Single-Port Hub (RS-422/485) in loopback mode, you should see both the TX and RX LEDs flashing as well as seeing echoed data on the screen.
18 USB SINGLE-PORT HUB (RS-422/485) Before you do, make a record of the history of the problem. We will be able to provide more efficient and accurate assistance if you have a complete description, including: • the nature and duration of the problem.
19 APPENDIX B: Electrical Interfaces Appendix B. Electrical Interfaces RS-530 RS-530 (EIA-530) compatibility means that RS-422 signal levels are met, and the pinout for the DB25 connector is specified.
20 USB SINGLE-PORT HUB (RS-422/485) common ground connection. Differential interfaces are typically more immune to noise or voltage spikes that may occur on the communication lines. Differential interfaces also have greater drive capabilities that allow for longer cable lengths.
21 APPENDIX B: Electrical Interfaces allow the electrical presence of the driver to be removed from the line. Only one driver may be active at a time and the other driver(s) must be tri-stated. RS-485 can be cabled in two ways: two-wire and four-wire mode.
22 USB SINGLE-PORT HUB (RS-422/485) Appendix C. Asynchr onous Comm unications Serial data communications implies that individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character.
23 APPENDIX C: Asynchronous Communications Figure C-1. Asynchronous communications bit diagram. This special bit is called the parity bit. Parity is a simple method of determining if a data bit has been lost or corrupted during transmission. There are several methods for implementing a parity check to guard against data corruption.
24 USB SINGLE-PORT HUB (RS-422/485) character. The data rate and communication parameters for asynchronous communications have to be the same at both the transmitting and receiving ends. The communication parameters are baud rate, parity, number of data bits per character, and stop bits (that is, 9600,N,8,1).
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2001. Black Box Corporation. All rights reserved..
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