PCL-849 4-Port RS-232 Interface Card
Copyright Notice This documentation and the software included with this product are copyrighted 1998 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 ................................................... 3 Description ............................................................................. 4 Features .................................................................................. 5 Specifications ......................................................................... 5 Chapter 2: Hardware Installation .................................... 9 Initial Inspection .......................................................
CHAPTER Introduction 1 Chapter 1 Introduction 3
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, 16654 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 921.6 Kbps v Independent/Shared I/O addresses and 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: 4 × 16C554 (PCL-849A/849B) 4 × 16C654 (PCL-849+) · Speed (bps): 50 ~ 921.6K · Connectors: 30-cm male DB-37 to 4 × DB25 male (DTE) · Data signals: TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI, GND · Surge protection: 2000 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 (refer to IEC-68-1.2.
Chapter 1 Introduction Figure 1-1: Switch and jumper layout 7
8 PCL-849 User's Manual
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 PCLS-802 PC-ComLIB software • One PC-ComLIB user's manual 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 has been set up as 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, each of the four ports has been set up as an address individually. Select an address which is not already in use by another card in the system. If you are installing more than one PCL-849 card in your system, set the cards to different base adresses.
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 can be set up using S1.
Independent IRQ Mode (JP1-JP4) In this mode, each of the four ports can have IRQ channels set individually. For each port, select an IRQ which is not already in use by another card in the system. The map of jumpers and ports is shown below. Port 1 à JP1 Port 2 à JP2 Port 3 à JP3 Port 4 à JP4 Share 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. Jumper Bank JP1 controls the card IRQ.
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 address via S1. Please note that the address decoder will occupy a continuous, 16-byte area related to the switch setting. For example, if you set the switch to 210H, then the address 210H to 21FH will all be decoded. The various DIP switch settings (S1) for the interrupt status register are as shown in the table opposite.
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 260H ON OFF OFF ON ON OFF OFF OFF ON ON 270H ON ON ON OFF ON 280H OFF ON ON OFF ON 290H ON OFF ON OFF ON 2A 0H OFF OFF ON OFF ON 2B 0H ON ON OFF OFF ON 2C 0H OFF ON OFF OFF ON 2D 0H ON OFF OFF OFF ON 2E 0H OFF OFF OFF OFF ON 2F 0H ON ON ON ON OFF
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 band 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 up to eight times, (e.g. if 115.2 Kbps is selected, the rate can be increased up to 921.
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 or Windows NT mode . 1 JP15 DOS, Windows 3.1 1 JP15 Windows 95, Windows NT Driver Installation for DOS Users Make a duplicate copy of the driver diskette in case the original disk becomes lost or damaged.
Driver selection screen After the screen shows up, move the cursor bar (using the arrow keys or the mouse) to the general serial board field and press ENTER. The screen shown below will appear.
Here you can set the configuration for each of the PCL-849 cards installed in the system. Set the IRQ, base address, baud rate, buffer size and port number to match the card's configuration. Do this by moving the highlight to the field you want to set up. Press ENTER and a menu will appear, allowing you to select the correct setting. The setup program also controls the port number assignments for each card. When you use a driver function in your program, you will identify the ports by these assignments.
When you are finished setting up the ports, press the ESC key to return to the previous windows. Press F10 to save the new configuration or ESC to quit without saving. The setup program will then create a new configuration data file GEN-DRV.CNF. DOS driver installation You must install the PCL-849 card driver (GEN-DRV.EXE) before you run any application programs, including the DataScope utilities.
Programming The following code fragment illustrates how the library functions can simplify card programming, reducing setup time and avoiding bugs. The following C program shows a simple data transfer test. It uses a PC-ComLIB function call to send data between Port 1 and Port 2 at a rate of 57.6 Kbps. /* Execute the PC-ComLIB TSR driver first*/ #include
Driver Installation for Windows 3.1 Users Windows 3.1 provides a versatile and easily configurable interface that supports up to four COM ports with a standard driver. The PCComLIB Standard Windows COMM Driver, along with PCL-849, allow users to install up to six serial ports under Windows 3.1. The Standard Windows COMM Driver supports Microsoft Windows COMM API (Application Programming Interface) such as OpenComm(), ReadComm(), and WriteComm().
A maximum of 6 ports is supported if the existing standard COM ports (COM1 and COM2) are included. For example, you can set one serial port on the motherboard for COM1 (0x3F8, IRQ4), while designating COM2-5 on IRQ3 for the four ports on a PCL-849 card. Note: If using a serial mouse, it must be installed on either COM1 (0x3F8, IRQ4) or COM2 (0x2F8, IRQ3), and must have its own dedicated IRQ.
3.Enter [Next], then choose [Connection Port (COM & LPT)] Hardware Type. 4.Enter [Next], then select [Standard Connection Port Type] for manufacturer and [Communication Connection Port] for model. 5.Enter [Next], then the default IRQ and I/O Addresses will be shown. Click [Done]. Up to this point you have added a port to the system without correcting IRQ and I/O settings. You can repeat step 1 to step 5 to add as many ports as you want (Max. 128 port). 6.
Installation for Windows NT Environment Windows 95 supports up to256 serial ports, from COM1 to COM256, in the Windows NT environment. To fully integrate the advanced features of Windows 95, including multi-processing and multithreading, configure Windows 95 as described below: 1.Enter Control Panel and choose Ports to add new COM ports. 2.Add new ports using the command sequence given in the following example.
CHAPTER Wiring 4 Chapter 4 Wiring 29
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 Pin 2 Signal TxD 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 connection, 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. Because in general the DCE RS-232 interfaces are reversed themselves.
APPENDIX PC I/O Address Reference A Appendix A PC I/O Address Assignments 33
PC I/O Address Usage The following table indicates the PC I/O address usage assignment. To prevent conflicting settings of the PCL-849 with other devices or I/O cards, you are recommended to refer this table.
APPENDIX Quick Reference B Appendix B Quick Reference 35
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 Share 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 · STANDARD/ ENHANCED Mode DIP 1 (SPEED) of S2 is used to decide the speed mode of this card.
DIP1 : OFF (Lower) position è Normal Speed Mode (Frequency of Oscillator Crystal = 1.8432 MHz) STANDARD MODE: In this mode, The I/O Addresses and its IRQ Level for each port are set to default as shown below, (Disable BIOS setting of on-board COM1 ~ COM4) Po r t N o . I/O Ad d r es s COM Po r t No .
38 PCL-846/847 User's Manual
