PCL-849 4-Port RS-232 Interface Card
Copyright Notice This documentation and the software included with this product are copyrighted 2001 by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right to make improvements to the products described in this manual at any time without notice. No part of this manual or software may be reproduced, copied, translated or transmitted, in any form or by any means without the prior written permission of Advantech Co., Ltd.
Contents Chapter 1: Introduction ....................................................... 5 Description ............................................................................. 6 Features .................................................................................. 7 Specifications ......................................................................... 7 Chapter 2: Hardware Installation ....................................... 11 Initial Inspection ...............................................
CHAPTER Introduction 1
Description The PCL-849 series are four port serial communication interface cards. Each port can be configured individually to RS-232 using onboard jumpers. PCL-849A/849B serial ports are implemented using 16C554 UARTs which make serial I/O more reliable. For higher performance, 16C654 UARTs can be installed in place of the 16C554 to create the PCL849+. By buffering data into 64-byte packets before putting it on the bus, UARTs drastically reduce the CPU load.
Features v Four independent RS-232 serial ports v Transmission speeds up to 307.2 kbps v Independent I/O addresses and independent/shared IRQ settings for each of 4 serial ports v Wide IRQ selection: 3, 4, 5, 6, 7, 9, 10, 11, 12, 15 v Supports Standard DOS COM1, COM2, COM3, and COM4 v Supports DOS/Windows 3.
· UART: 1 × 16C554 (PCL-849A/849B) 1 × 16C654 (PCL-849+) · Speed: 50 ~ 921.6 kbps (PCL-849A) 50 ~ 307.2 kbps (PCL-849B/849+) · Connectors: 30-cm male DB-37 to 4 × DB25 male (DTE) · Data signals: TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI, GND · Surge protection: 3000 VDC (PCL-849B/849+) · Power requirement: 250 mA typical 500 mA max. (+5 V), 70 mA typical. 120 mA max.(±12 V), · Dimensions: 185 mm × 98 mm · Operating Temperature.: 0 ~ 60° C (32 ~ 140° F) (refer to IEC-681.2.
Chapter 1 Introduction Figure 1-1: Switch and jumper layout 9
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CHAPTER Hardware Installation 2
Initial Inspection Depending on the option you ordered, in addition to this manual, you should find the following items inside the shipping container: • PCL-849(A/B/+) 4-port RS-232 Card • One 30-cm male DB-37 to four male DB-25 cable • One diskette with ICOM utility software We have carefully inspected the PCL-849 mechanically and electrically before shipping. It should be free of marks and scratches and in perfect working order on receipt.
Card Installation Warning! Turn off your PC’s power supply whenever you install or remove the PCL-849 or its cables. Static electricity can easily damage computer equipment. Ground yourself by touching the chassis of the computer (metal) before you touch any boards. 1. Turn off the computer. Turn the power off to any peripheral devices (such as printers and monitors). 2. Disconnect the power cord and any other cables from the back of the computer. Turn the PC if necessary to gain access to the cables. 3.
Card Configuration Each port on the PCL-849 card has a jumper and a DIP switch which require configuring prior to use. The DIP switch sets the port to the appropriate I/O address and speed mode. The jumpers set the port's IRQ. Default Settings The board is shipped with default settings. If you need to change these settings, however, see the following sections. Otherwise, you can simply install the card.
Standard Mode In this mode, each of the four ports is assigned an address, as shown below. Port 1 Ch1 base address 3F8 Port 2 Ch2 base address 2F8 Port 3 Ch3 base address 3E8 Port 4 Ch4 base address 2E8 Enhanced Mode In this mode, the address for each of the four ports is assigned according to the card base address, which is set using switch S2. Select an address which is not already in use by another card in the system.
Default Settings Mode Enhanced Mode Port 1 IRQ12 Address 300H Port 2 IRQ12 Address 308H Port 3 IRQ12 Address 310H Port 4 IRQ12 Address 318H The following example shows how to set the base address to 2F8. The switch sum is set to 2F8: 200 + 80 + 40 + 20 + 10 + 8 (HEX). Note: On the PCL-849 address line A9 does not appear on the DIP switch, as it is permanently hardwired to hex 200. Interrupt Level (IRQ) Setting (S1, JP1, JP2, JP3, JP4) The card's IRQ mode can be set using S1.
Independent IRQ Mode (JP1-JP4) In this mode, the IRQ level for each of the four ports is set individually. For each port, select an IRQ which is not already in use by another card in the system. The correspondence of jumpers to ports is shown below. Port 1 à JP1 Port 2 à JP2 Port 3 à JP3 Port 4 à JP4 Shared IRQ Mode (JP1) Select an IRQ which is not already in use by another card in the system. If you are installing more than one PCL-849, set them to different IRQ numbers.
switch S1 designates the card's interrupt status register address, as shown in the following figure and table. Interrupt Status Register S1 Bit Function 0 Port 1 1 Port 2 2 Port 3 3 Port 4 4 Not Used 5 Not Used 6 Not Used 7 Not Used The user may change the interrupt status register address via S1. Please note that the address decoder will occupy a continuous, 16-byte area related to the switch setting.
Table 2-1: DIP switch settings for S1 A4 A5 A6 A7 A8 Interrupt Register ON ON ON ON ON 200H OFF ON ON ON ON 210H ON OFF ON ON ON 220H OFF OFF ON ON ON 230H ON ON OFF ON ON 240H OFF ON OFF ON ON 250H ON OFF OFF ON ON 260H OFF OFF OFF ON ON 270H 280H ON ON ON OFF ON OFF ON ON OFF ON 290H ON OFF ON OFF ON 2A0H OFF OFF ON OFF ON 2B0H ON ON OFF OFF ON 2C0H OFF ON OFF OFF ON 2D0H ON OFF OFF OFF ON 2E0H OFF OFF OFF OF
Speed Mode selection The PCL-849 employs a unique speed option that allows the user to choose either normal speed mode (1x) or high speed mode (8x). This high speed mode is selected at S2. Normal Speed Mode To select the baud rate commonly associated with COM ports , such as 2400, 4800, 9600. . .115.2 kbps, place the switch as follows. High Speed Mode To increase normal mode rates by eight times, (e.g. if 115.2 kbps is selected, the rate is increased to 921.6 kbps), place the switch as follows.
CHAPTER Software Installation 3
Operating Environment Selection Set jumper 15 (JP15) to correspond with your desired software operating environment. Connect the left two pins of JP15 to operate in DOS or Windows 3.1 mode, as shown below. Connect the right two pins to operate in Windows 95/98 or Windows NT mode . 1 JP15 JP15 DOS, Windows 3.
Following completion of installation, please restart your system as prompted. Once the board and driver have been installed and the system restarts successfully, users can execute any ready-made applications, such as HyperTerminal to transmit/receive data, or Remote Access Service to provide dial-up networking capability.
Share IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12, 15 Vector Address: 200H ~ 3F0H After you finish the installation, you can click [Exit] and restart your system. Unless the system is restarted, the latest configuration will not take effect.
CHAPTER Wiring 4 Chapter 4 Wiring 25
Connector Pin Assignments PCL-849: DB-37 Four Port Connectors: DB-25 The following diagrams show the pin assignments for DB-37 and DB25 connectors for RS-232.
Wiring RS-232 signal wiring Since the RS-232 interface is not strictly defined, many devices have their own connection methods which may ignore some signal lines or define reserved lines for other functions. It is best to refer to the user’s manual for your device for installation instructions. You may find the following helpful. In general, DTE (Data Terminal Equipment) refers to the device that is leading the communication. Examples include PC’s, terminals and some printers.
Modem connections DB-25 Male: PCL-849 Modem (DCE) Pin 2 Signal TxD Pin 2 Signal RxD 3 RxD 3 TxD 4 RTS 4 CTS 5 CTS 5 RTS 6 DSR 6 DTR 7 GND 7 GND 20 DTR 20 DSR 8 DCD 8 DCD For DTE to DCE connections, use straight through cable (i.e., you don't have to reverse lines 2 and 3, lines 4 and 5, and lines 6 and 20 since, in general, the DCE RS-232 interfaces are reversed themselves).
APPENDIX PC I/O Address Reference A Appendix A PC I/O Address Assignments 29
PC I/O Address Usage The following table indicates the PC I/O address usage assignments. To prevent the PCL-849 card settings from conflicting with other device or I/O card settings, we recommend you refer to this table.
APPENDIX Quick Reference B Appendix B Quick Reference 31
Ø Jumper Setting · IRQ Mode DIP 1 (MODE 0) of S1 is used to set the IRQ mode of this card. DIP1 : ON (Upper) position è Shared IRQ mode DIP1 : OFF (Lower) position è Independent IRQ mode · STANDARD/ ENHANCED Mode DIP 2 (MODE 1) of S1 is used to set the standard/enhanced mode of this card. DIP1 : ON (Upper) position è STANDARD mode DIP1 : OFF (Lower) position è ENHANCED mode · SPEED Mode DIP 1 (SPEED) of S2 is used to determine the speed mode of this card.
STANDARD MODE: In this mode, the I/O addresses and the IRQ levels for each port are set to default as shown below, (Disable BIOS setting of on-board COM1 ~ COM4) Port No. I/O Address COM Port No.
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