IC030C-R2/170C Text
Contents
1. MTBF Manufacturing o A 1 Specifications IBM PC XT PC AT Portable PC or compatible or PS 2 Model 25 or 30 with an available ISA half card slot Either 238 to 23F 278 to 27F 2B8 to 2BF 2F8 to 2FF COM2 338 to 33F 378 to 37F or 3B8 to 3BF COM1 user selectable IRQ3 or IRQ4 user selectable RS 422 and RS 485 proprietary pinning IC030C R2 Up to 115 2 kbps IC170C 460 8 kbps and higher IC030C R2 16550 UART IC170C 16850 UART 4000 ft 1219 2 m 4 3 Jumpers Interrupt Selection Driver Enable J8 Slot 1 DIP Switch Address 1 DB25 male Pins 7 GND 12 RX 13 RX gt 24 TX and 95 TX gt 150 000 hours IPC 610 A Class III standards are adhered to with a 0 1 visual A Q L and 100 functional testing All boards are built to U L 94V0 rating and are electrically tested These printed circuit boards are solder mask over bare copper or solder mask over nickel PC lt gt 422 485 SERIAL INTERFACE Temperature Range Operating 32 to 122 F 0 to 50 C Storage 4 to 158 F 20 to 70 C Humidity Range 10 to 90 relative humidity noncondensing Power From PC s ISA bus Consumption 5 VDC 195 ma 12 VDC 50 ma Size Half card 4 2 H x 0 7 W x 4 9 D 10 7 x 1 8 x 12 4 cm Weight 0 3 lb 0 1 kg NOTE Versions of this card that support the Micro Channel architecture for PS 2 model numbers higher than 30 or the extra se2. TX Figure 2 1 An RS 422 point to point application The RS 485 interface specification is compatible with RS 422 but supports multipoint applications The output of the PC lt gt 422 485 Serial Interface like that of other RS 485 devices can be in any of three states high low or off This allows you to connect and selectively poll multiple PCs in a multi drop arrangement as shown on the next page in Figure 2 2 RS 485 also provides for two wire half duplex applications You can build such an application shown on the next page in Figure 2 3 by connecting the card s TX to its RX and its TX to its RX See the pinout chart in Table 2 1 also on the next page for the pinning of these signals MA PC lt gt 422 485 SERIAL INTERFACE RS 485 DEVICE PC 422 485 CARD RS 485 DEVICE PC 422 485 CARD RS 485 DEVICE Figure 2 3 An RS 485 two wire half duplex application NOTE Echo is not disabled in 2 wire operation Table 2 1 The Pinout of the Card s DB25 Connector J2 GND Ground None RX RX B Receive Positive Input to card RX RX A Receive Negative Input to card TX TX B Transmit Positive Output from card TX TX A Transmit Negative Output from card CHAPTER 2 Introduction Typically each end of the RS 422 485 bus must have line terminating resistors A 100 ohm resistor is provided across each RS 422 485 input and a 1K ohm pull up pull down combination biases the rece
3. 422 485 Serial Interface has an interrupt selection jumper that should be set prior to use Consult the user manual for the software being used to determine the proper setting El selects the interrupt request for the port A jumper at position 3 of MA PC lt gt 422 485 SERIAL INTERFACE E2 El selects IRQ3 at position 4 IRQ4 is selected If no IRQ is required remove the jumper completely If you ve set DIP switch S1 s position 8 CLOSED to select the address COM1 you must set this jumper to IRQ4 If you ve set S1 s position 6 CLOSED to select the address COM2 you must set this jumper to IRQ3 Header E2 selects whether the RS 485 driver is enabled by the UART signal Request To Send RTS or always enabled With the jumper installed RTS enables the driver Removing the jumper enables the driver regardless of RTS Please be aware that echo is not disabled in 2 wire RS 485 operation RS 422 The RS 422 option is selected when the RS 422 485 driver receiver pair is installed at U6 75176 and U7 75174 and Header E2 is removed or set to one pin RS 485 The RS 485 option is installed when the RS 422 485 chips are installed at U6 75176 and U7 75174 The output of the RS 422 485 driver is capable of being Active enabled or Tri State disabled for RS 485 compatibility Header E2 selects whether the RS 485 driver is enabled by the SCC signal Request To Send RTS or always enabled With the jumper installed at Head
4. Power down the computer and install the adapter as described in Section 4 2 If you wish to change any resources assigned to the adapter refer to the help file installed in the Black Box folder in the Start Programs menu 3 1 3 WINDOwS NT For the ISA card run setup on disk two of the Serial Utilities Diskettes before installing the card After installing the software refer to the help file that automatically comes up for installation instructions 3 2 Hardware Installation The PC gt 422 485 Serial Interface can be installed in any of the expansion slots in any type of personal computer provided it has an ISA bus 0 CHAPTER 3 Installation Follow these steps to install the card refer to Figure 3 1 below Tele ER E1 pea So Oct 8 8 O O Selects Selects o 8 8 1RQ3 1RQ4 jes aco O 9 O Je Oc O bI ef o ON OFF lz RTS ALWAYS o DRIVER ENABLE E User Configurable O O O O O O O O O c21 Figure 3 1 Board layout of the PC lt gt 422 485 Serial Interface 1 Set DIP switch S1 on the card for your desired serial port address see Table 3 1 on the next page To select an address properly CLOSE move toward the front of the card the switch position corresponding to the address and leave all other positions OPEN If all eight switch positions are OPEN or if two or more positions are CLOSED the port will be disabled 2 Set jumpers El and E2 to the settings you need El The PC lt gt
5. a self test make sure the driver on the card is always enabled E2 removed Also be sure the driver is not controlled by RTS during the test 3 Configure the software to use full duplex and to match the card s port address 4 Run the software in its terminal mode 5 Type some random characters on the PC s keyboard 3 CHAPTER 4 Troubleshooting 6 If the card is working properly the characters will appear on the screen If the characters do not appear the card is not necessarily defective Examine the following possibilities refer to Chapter 3 e Check the port settings in your software and on DIP switch Sl Are S1 and your software set to use the same address e Check the setting of jumper El If S1 is set to COM1 is El set to IRQ4 If Sl is set to COM2 is El set to IRQ3 e Is there a conflict between the port address setting or interrupt setting of the PC lt gt 422 485 Serial Interface and that of another card No two cards in the same computer can use the same port address or interrupt e Is the card s connector actually jumpered as shown in Figure 4 1 If you eliminate any of these potential problems and the card still fails its self test 1t is probably faulty See the next section 4 2 Serial Utility Diskettes Two serial utility diskettes are supplied with the PC lt gt 422 485 Serial Interface and will be used to eliminate common problems you may encounter 1 Identify all I O adapters curren
6. servicio al equipo el ctrico m s all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado 9 El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n 10 El equipo el ctrico 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 el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato gt 12 Lo 14 15 16 17 18 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 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 atenci n a los contactos y recept culos donde salen del aparato El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante En caso de existir una antena externa deber ser localizada lejos de las lineas de energia El cable d
7. UICN 00 0 00 00 090 0 iii JUNE 2000 ICO30C R2 IC170C lt BLACK BOX PC gt 422 485 Serial Interface YYyYyyyy yaaan a a a l Y SSS A O A A o a E A A Ss A SS NSSS Order toll free in the U S 24 hours 7 A M Monday to midnight Friday 877 877 BBOX CUSTOMER 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 Oblackbox com 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 responsibl
8. e corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido 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 desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada PC lt gt 422 485 SERIAL INTERFACE TRADEMARKS USED IN THIS MANUAL AT IBM Micro Channel and PS 2 are registered trademarks of International Business Machines Corporation PC XT is a trademark of International Business Machines Corporation Crosstalk is a registered trademark of Digital Communications Associates Inc ProComm is a registered trademark of DATASTORM TECHNOLOGIES INC Microsoft and Windows are registered trademarks of Microsoft Corporation Smar Term is a registered trademark of Persoft Inc All other trademarks are the property of their respective owners CHAPTER 1 Specifications System Requirements Address Used Interrupts Used Interfaces Data Rate Communication Chip Maximum Distance User Controls Connectors Leads Signals Supported
9. e 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 pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de classe A prescrites dans le Reglement sur le brouillage radio lectrique publi par Industrie Canada PC lt gt 422 485 SERIAL INTERFACE NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1 Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado 2 Las instrucciones de seguridad y operaci n deber n ser guardadas para referencia futura 3 Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas 4 Todas las instrucciones de operaci n y uso deben ser seguidas 5 El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de ba o lavabo s tano mojado o cerca de una alberca etc 6 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar
10. er E2 RTS enables the driver RS 485 Removing the jumper from Header E2 enables the driver regardless of RTS RS 422 CHAPTER 3 Installation Table 3 1 Selecting the Address with DIP Switch S1 Switch Position Serial Port Address Hexadecimal 238 to 23F 2B8 to 2BF 338 to 33F 3B8 to 3BF 278 to 27F 2F8 to 2FF COM2 378 to 37F 3F8 to 3FF COM1 i 2 3 4 5 6 7 8 These addresses are not supported by DOS but can be supported by special software Be very careful if you select the address 278 to 27F or 378 to 37F These are normally parallel port LPT2 and LPT1 addresses and if a printer or any other device is plugged into a parallel port on the same PC there could be a conflict 4 Troubleshooting 4 1 Self Testing The PC lt gt 422 485 Serial Interface can perform a self test to check for hardware and setup problems To run this test follow the steps below l Install jumpers on the data pins of the card s DB25 connector as shown in Figure 4 1 below PC 422 485 CARD Figure 4 1 Self test setup 2 If the card is using the port address COM1 or COM2 get a copy of a communication software package such as Crosstalk SmarTerm or ProComm that can emulate a dumb terminal Install it on the card s PC If you ve set the card to use one of its nonstandard addresses see Step 1 and Figure 3 1 in Chapter 3 special software will again be necessary NOTE When performing
11. iver inputs If more than two PC lt gt 422 485 Serial Interfaces are connected together in a bus the 100 ohm resistor must be removed Several of the card s options are user selectable For example you can switch select which address it uses Also the card s driver can be either permanently enabled tied high or enabled depending on the state of the UART s Request to Send RTS signal the factory default If you are using the card in a multipoint or two wire half duplex RS 485 environment the driver must be set to track RTS and the PC s software must control the UART s RTS signal For more information on the card s selectable options see the next chapter PC lt gt 422 485 SERIAL INTERFACE 3 Installation IMPORTANT You MUST set up the operating system BEFORE you physically install the Card 3 1 Software Installation If you are installing an ISA adapter in DOS OS 2 or QNX please refer to the appropriate directory on one of the Serial Utilities Disks for instructions 3 1 1 Winbows 3 1x Please refer to the WINDOWS sub directory on the Serial Utilities Diskette for help files and current information on the installation of the Card in this operating environment 3 1 2 WinDows 95 98 USERS For the ISA card run setup on disk two of the Serial Utilities Diskettes before installing the card Make note of the resources that Windows assigns the adapter and set the adapter to match those resources
12. rial ports COM3 and COM4 are available as special quotes Call for technical support if you think you might want a card with either of these capabilities CHAPTER 2 Introduction 2 Introduction The PC lt gt 422 485 Serial Interface is a card you can install in a PC that allows that PC to communicate with and control RS 422 or RS 485 devices The ICO30C R2 uses a 16550 UART chip the same chip as the one in the regular IBM asynchronous adapter RS 232 comm port This means that you can set 1ts data rate data format and interrupt control through DOS or by programming the UART the same way you would if it were a regular RS 232 port Refer to the IBM Technical Reference Guide for information on programming the chip The IC170C uses the 16850 chip for even better performance it features a 128 byte FIFO buffer The card can be set to use serial port COM1 COM2 or six other predefined addresses This makes it compatible with most communications software and programming languages In general the card works the same way as an RS 232 serial port except that RS 422 485 drivers and receivers are built into it rather than RS 232 components The RS 422 interface specification supports very long distance up to 4000 ft 1219 2 m point to point serial communication with virtually error free differential drive characteristics Figure 2 1 below shows a simplified diagram of an RS 422 application RX PC 422 485 CARD RS 422 DEVICE
13. roblem occurs e the components involved in the problem e any particular application that when used appears to create the problem or make it worse and the results of any testing you ve already done 4 4 Shipping and Packaging Information If you need to transport or ship your PC lt gt 422 485 Serial Interface e Carefully package the card We recommend that you use the original container e If you are shipping the card for return or repair contact your supplier to get a Return Authorization RA number If you are returning the card please include this manual
14. tly installed in your system This includes your onboard serial ports controller cards and sound cards The I O addresses used by these adapters as well as the IRQ if any should be identified 2 Configure your PC lt gt 422 485 Serial Interface so that there is no conflict with currently installed adapters No two adapters can occupy the same I O address 3 Make sure the Serial Interface is using a unique IRQ While the Interface does allow the sharing of IRQs many other adapters do not The IRQ is typically selected via an onboard header block 4 Make sure the PC lt gt 422 485 Serial Interface is securely installed in a motherboard slot 5 Use the supplied diskettes and this manual to verify that the PC lt gt 422 485 Serial Interface is configured correctly One of the supplied diskette contains a diagnostic program SSD that will verify if an adapter is configured properly Refer to the README txt file on the disk for detailed instructions on using SSD nn PC lt gt 422 485 SERIAL INTERFACE 4 3 Calling Black Box If your PC lt gt 422 485 Serial Interface seems to be malfunctioning do not attempt to alter or repair it contact Black Box Technical Support at 724 746 5500 Before you do so make a record of the history of the problem Your supplier will be able to provide more efficient and accurate assistance if you have a complete description including e the nature and duration of the problem e when the p
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