PCM-COM422 & 485
Contents
1. PCM C422 232 CABLE oyaa a beh tk ee boo SAE ats GS 10 POM C422 4 22 CABLE ii Tis 11 PCM COM485 CONNECTOR we ee ee es 12 PROGRAMMING amp APPLICATIONS we ee eee 13 PROGRAMMING LANGUAGES amp APPLICATIONS 13 CALIBRATION SERVICE www ee ees 14 TO ADDRESS MAP amp REGISTER FUNCTIONS _ 2 0 0 15 CONTROL REGISTERS 10 a a ccc cee ee ee ee 15 BASE 7 SIGNAL CONFIGURATION REGISTER 16 PCM COM422 SIGNAL CONFIGURATION 1 ee ee ee ee eee 16 MODESEL RS232 RS422 0 ois teas Ge ee A sae Se ee 16 CNTL_EN CONTROL ENABLE DISABLE 0 16 PCM COM422 SPECIFICS ww ee ee ees 17 PCM COM485 SPECIFICS ww ee ees 17 TRANSMITTER RECEIVER ENABLE REGISTER 19 BASE 7 CONTROL REGISTER Byte WRITE ONLY 19 SPECIFICATIONS sio o E a a 20 OLDER COMPUTERS cd ee ee es 21 INTRODUCTION The PCM COM422 and PCM COM485 are serial communications boards for IBM PC compatible computers with PCMCIA type slots The heart of the board is a 16550 UART which is configured to be compatible with all DOS and Windows COM port drivers and software Customers familiar with the CIO COM422 and CIO COM485 will notice immediately the similarity in register structure and function between the PCMCIA board and the ISA bus boards Each of the boards is based on the 16550 UART This UART has a built in FIFO memory and allows data transfer rates consistently faster than boards using the more2. PCM COM485 18 PCM COM422 SIGNAL CONFIGURATION The electrical characteristics and control signals for the PCM COM422 interface are controlled by the signal configuration register 7 6 5 4 3 2 1 0 x X X X X CNTL_EN MODESEL CNTL EN MODESEL Interface Control 0 0 RS232 Disabled lt Power Up State 0 1 RS422 Disabled 1 0 RS232 Enabled 1 1 RS422 Enabled MODESEL RS232 RS422 This bit switches the physical path of the UARTs communication signal through the tranceivers appropriate for the interface chosen CNTL_EN CONTROL ENABLE DISABLE For the RS interface chosen enables or disables all the hardware control signals Refer to the connector diagram 19 PCM COMA422 SPECIFICS PCM COMA422 users who wish to use their boards in other than the default configura tion need to run the program SET422 EXE as soon as they exit from InstaCal The reason being that the board has two configurable options that may be set from InstaCal The options selected by SET422 EXE are shown below default settings in BOLD Port Configuration RS 232 RS 422 Control Lines ENABLED DISABLED When the board is first turned on these default options RS 232 and Control Lines Disabled are loaded When SET422 EXE is run it will set these options to the val ues selected in InstaCal If you set these options to anything other than the default values it would be a good idea to add SET422 EXE to your system s auto
3. 9 pinout 13 RX datat pin 8 14 TX data pin 5 15 TX datar pin 4 Chassis Ground amp Signal Ground on Connector Housing amp Shield 15 PIN I O CONNECTOR View into PCM COM Board 13 PCM COM485 CONNECTOR Shown here is a PCM COM485 case looking into the connector to which you would connect a signal cable or screw terminal box and cable The KEY helps to insure that the cable is inserted in the correct orientation TOP M Chassis Ground amp Signal Ground ye 1 signalgrnd pin 1 ground 2 NC 3 fused grnd pin 3 4 TX RX KK pin 4 9 pin male 5 TX RX O Pin 5 D connector 6 5V from PO pin 6 pinout 7 NC 8 TX RX o pind 9 TX RX E pin 9 10 NC TENG PCM C485 485 cable 12 NC 13 NC 14 NC 15 NC Chassis Ground amp Signal Ground on Connector Housing amp Shield 15 PIN 1 0 CONNECTOR View into PCM COM Board 14 PROGRAMMING APPLICATIONS Your PCM COM is now installed and ready for use PROGRAMMING LANGUAGES amp APPLICATIONS The PCM COM422 is compatible with all standard communications applications for both DOS and Windows The PCM COM4835 has an additional function that would not be a part of a standard com package That is the ability to enable disable the transmit and receive functions This can be achieved using the Universal Library function cbRS485 or by writing register level code as described later in
4. While it is idle it is configured as a receiver Once it receives a command if that command entails a response the module becomes a transmitter transmits the status or data then switches back to be a receiver 21 You can see from the program flow that the CIO COM485 has to switch back and forth from transmitter to receiver Also you as the programmer must be aware of the constraints of the device you are working with In this case a subroutine called DELAY provides a 7 second delay to allow the module to settle back into receiver state RS485 communications require that you understand the devices you are working with and program accordingly TRANSMITTER RECEIVER ENABLE REGISTER The Transmitter Receiver Enable Register is located at base 7 This register controls the transceivers on the CIO COM485 In this 8 bit register there are only two bits which have an effect on the orientation of the CIO COM485 transceivers Setting the first bit equal to 1 turns on the receivers Setting the second bit equal to 1 turns on the transmitters Turning both on writing 3 to the register turns on both the receiver and transmitter This mode is useful for testing because the PCM COM485 but will echo back everything written even when no cable is in place NOTE The default value for this register is O Until transmit or receive is enabled no communication between the PCM COM483 and any RS485 device is possible You must write to BASE 7 and enable
5. commonly used 16450 chip Sustained data transfer rates of 115 Kbaud are achievable with any of the PCM COM series boards The serial ports can be configured as COM1 COM2 COM3 or COM4 and support a wide variety of serial transfer modes including using 5 6 7 or 8 data bits with odd even or no parity and 0 or 2 stop bits The PCM COM485 transmitter may be enabled or disabled via software and allows the board to operate on a 2 wire network The PCM COM485 single port RS 485 interface uses the PCM C485 485 cable The PCM COMA422 provides a single port of either RS 232 or RS 422 For RS 232 opera tion use PCM C422 232 cable for RS 422 use PCM C422 422 cable INSTALLATION WINDOWS 95 Your PCM COM is completely plug and play There are no switches or jumpers to set prior to installation in your computer Simply follow the steps shown below to install your PCM hardware 1 Za Start Windows 95 Insert the card into a free PC Card PCMCIA type II or III slot You do not have to turn the computer off The system is designed for power on installa tion Windows 95 will automatically detect the card If you have previously installed a PCM data acquisition control card its driver set may include your new card If so you will hear the insertion tone the New Hardware Found dialog box will disappear and you can proceed to the section titled Running InstaCal If the drivers are not already installed on your PC d
6. into the PCMCIA slot on your computer you should hear a pleasant beep beep This is CSS way of informing you that the board PCM COM is fully inserted in the correct orientation and that CSS recognizes the PCM COM identification code If you hear a lower less pleasant tone somewhat of a baaaaap then there is some thing wrong with the installation TESTING THE INSTALLATION After you have run the install program and set your address and interrupt with Insta Cal it is time to test the installation To test the installation start the InstaCal program again From the main menu choose TEST From the pull down list of boards select the PCM COM Choose Internal Test InstaCal will write to and read from the internal registers of your PCM COM verifying that it is installed recognized and functioning 11 CONNECTIONS The PCM COM422 and PCM COM485 have 15 pin connectors which must be mated to a PCM C422 or PCM C485 cable The cable provides the transition between the micro miniature 15 pin PCMCIA connector and a standard 9 pin serial connector Shown here is a PCM COM422 case looking into the connector to which you connect the signal cable or screw terminal box and cable The KEY helps to insure that the cable is inserted in the correct orientation As you can see all the signals for both RS232 except DCD and RS422 interfaces are present on the connector When you ordered your PCM COM422 you probably ordered a PCM C422 232 or P
7. one of the transceivers before the CIO COM485 can communicate with other RS485 devices BASE 7 CONTROL REGISTER Byte WRITE ONLY 7 6 5 4 3 2 1 0 X X X X X X XMTR RXVR XMTR RXVR Transmitter Receiver 0 0 Disabled Disabled 1 0 Enabled Disabled 0 1 Disabled Enabled 1 1 Enabled Enabled 22 SPECIFICATIONS POWER CONSUMPTION PCM COM232 PCM COM422 amp PCM COM485 5V 25 mA Typical 125mW 50 mA Max during normal operation 250mW 30mA Start Up for 200mS max NOTE The figures provided are based on component power consumption specifications The measured power consumption during normal operation that is transmitting data was less than 5mA five milli amps COM Ports Supported Address IR COM1 COM2 COM3 COM4 3F8 3FF IRQ4 2F8 2FF IRQ3 3E8 3EF IRQ4 or any available IRQ 2E8 2EF IRQ3 or any available IRQ NON STANDARD Any Base Address 200 3F8 Any IRQ Interrupt Level 2 15 23 OLDER COMPUTERS If you are using a desktop PC or an older laptop PC you may experience problems with automatic detection of the PCM COM board when you reboot with the PCM card installed On desktops and older laptops the PCM card is not reset during the reboot This will result in one extra COM port being detected on every other system boot cycle For example if there are two integrated ports in the PC COM1 and COM2 and one PCM COM board is installed at COM3 every other boot will r
8. the TEST function built into Instacal to assure your board is properly installed and functioning normally Users of the PCM COM422 and PCM COM485 should refer to the sections later in this manual that deal with the specific operation consideration of each of the boards From DOS or Windows 3 x The software is easy to install Among the disks supplied with your PCM COM is one labeled JnstaCal On this disk is a program INSTALL EXE which will install all the software required to run the PCM COM as well as UniversalLibrary programming language support if you choose to order this option Insert the disk labeled InstaCal into a floppy drive and type drive A is used in this example A INSTALL You will be prompted for some information Please follow the instructions and if possible accept the defaults If this is your first installation we urge you to accept the defaults It will be easier to assist you in the event of trouble if you accept the defaults Install does these things explanation presumes you accept defaults 1 Creates directories C CB and numerous directories SUB to these C CARDSOFT 2 Adds the directory C CB to the PATH statement in your AUTOEXEC BAT file 3 Adds these lines to CONFIG SYS if installing CSS DEVICE C CARDSOFT CS EXE DEVICE C CARDID EXE DEVICE CACSALLOC EXE CACARDSOFTICSALLOC INI 4 Adds these lines to AUTOEXEC BAT SET CBDIREC C CB C CB CBCLIENT EXE 5 Copies these files i
9. CM C422 422 cable Follow ing are the cable schematics for each of these cables PCM C422 232 CABLE This cable maps the correct signals from the PCM COM422 into a standard DB 9 RS232 serial interface connector Although the RS232 specification calls for a DB 25 connector the DB 9 signal assignments instituted by IBM have become a second stan dard which this cable follows TOP Chassis Ground amp Signal Ground lt 1 TX data pin 3 2 RX data pin 2 i 3 RTS pin 7 9 pin male 4 CTS pin 8 D connector 5 DSR pin 6 pinout 6 RI pin 9 7 DTR pin 4 8 CTS 9 CTS PCM C422 232 cable 10 RTS 11 RTS 12 RX data 13 RX data 14 TX data 15 TX data Chassis Ground amp Signal Ground on Connector Housing amp Shield Note DCD Data Carrier Detect is not available 15 PIN I O CONNECTOR View into PCM COM Board 12 PCM C422 422 CABLE This cable maps the correct signals from the PCM COM422 into a standard 9 pin RS422 serial interface connector It is important to note that the RS422 specification is an electrical and not a physical specification There are DB 9 DB25 DB 37 RJ11 and RJ45 and other physical implementations of RS422 You need to carefully match the signals on the DB 9 to those of the device you are connecting TOP PCM C422 422 cable DTR pin 1 ground CTS pins CTS pin 7 10 RTS pin 3 9 pin male 11 RTS MMMM pin 2 D connector 12 RX data pin
10. DRESS RESERRVED BY CSS CONFLICTS WITH THE BASE ADDRESS YOU HAVE CHOSEN INSTACAL WILL ADVISE YOU When you exit the PCM COM setup screen in InstaCal InstaCal attempts to initialize the TSR CBCLIENT with the setup information you have just provided CSS checks for address conflicts If it detects one InstaCal will advise that you must choose a dif ferent address You will not be able to exit the PCM COM setup screen until you do choose a different address and one which does not conflict with addresses reserved by CSS 10 INTERRUPT LEVEL The PCM COM uses one of the computer s hardware interrupt lines The PCM COM may use interrupts 2 5 through 15 We recommend you use the standard interrupts allotted to COM ports InstaCal will allow you to override the recommended interrupt and select another You must choose an interrupt level for the PCM COM from the available interrupts in your computer The table below shows typical interrupt level use in a personal com puter Please add those interrupts you have assigned to other boards and note your selection for the PCM COM IRQ FUNCTION IRQ FUNCTION NMI Parity IRQ 8 Real Time Cock IRQO Timer IRQ 9 Re directed to IRQ2 AT IRQ 1 Keyboard IRQ 10 Available IRQ2 Available XT IRQl11 Available Interrupt 8 15 AT IRQ3 COM2 IRQ 12 Available IRQ 4 COMI IRQ 13 Numeric CoProcessor IRQ5 LPT2 IRQ 14 Hard Disk IRQ 6 Floppy Disk IRQ 15 Available IRQ7 LPTI PRN When you insert the PCM COM
11. PCM COM 422 amp 485 ComputerBoards Inc Revision 3 April 1999 LIFETIME PRODUCT WARRANTY Every ComputerBoards Inc product is warranted against defects in materials or workmanship for the life of the product to the original purchaser Any products found to be defective in material or workmanship will be repaired or replaced promptly LIFETIME HARSH ENVIRONMENT WARRANTY Any ComputerBoards Inc product which is damaged due to misuse may be replaced for only 50 of the current price I O boards face some harsh environments some harsher that the boards are designed to withstand When that happens just return the board with an order for its replacement at only 50 of the list price ComputerBoards does not need to profit from your misfortune By the way we will honor this warranty for any other manufacture s board that we have a replacement for 30 DAY MONEY BACK GUARANTEE Any ComputerBoards Inc product may be returned within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep it Please call for a RMA number first No credits or returns accepted without a copy of the original invoice Some software products are subject to a repackaging fee These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular application Th
12. e remedies provided herein are the buyer s sole and exclusive remedies Neither ComputerBoards Inc nor its employees shall be liable for any direct or indirect special incidental or consequential damage arising from the use of its products even if ComputerBoards has been notified in advance of the possibility of such damages Notice ComputerBoards Inc does not authorize any ComputerBoards Inc product for use in life support systems and or devices without the written approval of the President of ComputerBoards Inc Life support devices systems are devices or systems which a are intended for surgical implantation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury ComputerBoards Inc products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people C Copyright 1997 ComputerBoards Inc No part of this manual may be reproduced without written permission from ComputerBoards Inc INTRODUCTION sis A s 1 INSTALLATION gt oreina A EA ii 2 WINDOWS 99 sec tc e eae E dt A Oe ae tht 2 DOS AND OR WINDOWS 3 1 ooocococoocnocnonononomo oo 3 RUNNING INSTACAL wd ee ee ees 6 INSTALLING AND LAUNCHING INSTACALTM 6 TESTING THE INSTALLATION 20 2 eee ee eee 9 CONNECTIONS aii hg lark SRC tA Bd carte Gu Ges Shee e BSE Paes 9
13. epending on the version of Windows 95 you have there are currently two you will either see a New Hardware Found dialog box or a Update Device Driver Wizard box If you see the New Hardware Found dialog box follow these instructions Windows 95A If you receive the Update Device Drive Wizard box skip to the section on the following page titled Windows 95B Windows 95A New Hardware Found dialog box 5 Select the default radio button labeled Driver from disk provided by hard ware manufacturer Click OK When prompted by the Install From Disk dialog box insert the disk labeled InstaCal Click OK The appropriate driver should be automatically selected However if pre sented with a list select the PCM card you are currently installing Click OK 8 An insertion tone should be heard and the card should now appear under the Device Manager s list at node DAS Component Please proceed to the sec tion titled InstaCAL Windows 95B Update Device Driver Wizard 5 Insert the InstaCal disk then Click on Next to let the system look for an updated driver 6 When the driver for your card is found Click on Finish to return to Windows 95 desktop 7 An insertion tone should be heard and the card should now appear under the Device Manager s list at node DAS Component 8 Please proceed to the section titled InstaCAL If no New Hardware Found or Update Device Driver dialog box appears check that your co
14. er PCMCIA boards it will not interfere If you decide to install CSS When you run the InstaCal installation described in the next section you will be prompted to indicate whether or not to install CSS Respond yes After installation of InstaCal and the Universal Library if ordered the CSS disk will be requested Insert the CSS disk and accept the defaults when prompted if possible INSTACAL Install the InstaCal software Windows in its various forms and DOS users install the program by running the INSTALL EXE program supplied on your InstaCAL disk Some versions of Insta CAL will include a file named SETUP EXE If you are running from Windows 3 x Windows 95 or higher and your InstaCAL disk contains SETUP EXE run it rather than INSTALL EXE You will then be prompted for some information Follow the instructions and if possible accept the defaults If this is your first installation we urge you to accept the defaults It will be easier to assist you in the event of trouble with default settings The installation routines will create all required folders directories and unpack the various pieces of compressed software Simply follow the on screen instructions Remember where the InstaCAL files are placed as you will need to access them in the next step the default location is on your main hard drive in a directory or folder named C CB If you have purchased the Universal Library programmers library the installation pr
15. esult in 4 COM ports being detected with the PCM COM card addresses at COM4 COM3 will not have hardware associated with it Therefore your software will be unsuccessful trying to communicate through COM3 If you are experiencing this problem remove the PCM COM card before power up or before rebooting and install after booting is complete This must be done each time the PC is rebooted or power is cycled to prevent having to boot the system twice 24 EC Declaration of Conformity We ComputerBoards Inc declare under sole responsibility that the product PCM COM4 22 PC Card RS422 interface PCM COM485 PC Card RS485 interface Part Number Description to which this declaration relates meets the essential requirements is in conformity with and CE marking has been applied according to the relevant EC Directives listed below using the relevant section of the following EC standards and other normative documents EU EMC Directive 89 336 EEC Essential requirements relating to electromagnetic compatibility EU 55022 Class B Limits and methods of measurements of radio interference characteristics of information technology equipment EN 50082 1 EC generic immunity requirements IEC 801 2 Electrostatic discharge requirements for industrial process measurement and control equipment IEC 801 3 Radiated electromagnetic field requirements for industrial process measurements and control equipment IEC 801 4 Electrically fa
16. exec bat file so that the selected options will be set every time you power up the PC 20 PCM COMA85 SPECIFICS Once installed the CIO COM485 operates just like any other COM port with the exception of the transmit receive enable disable register You will not be able to use the serial drivers supplied with DOS or Windows Languages or applications pro grams alone The CIO COM485 TRX and RCV lines must be constantly managed in order for the PCM COM485 or any RS485 COM port to communicate with other RS422 or RS485 devices Here is a simple example in QuickBasic 4 5 showing how to use the CIO COM485 board Program to communicate with a remote temperature module First configure CIO COM485 then configure and communicate with the module BASE amp H3F8 Base address for COM1 TXRX 7 BASE Address of the transmit receive register TX 2 Bit to turn on transmitter RX 1 Bit to turn on receiver OPEN COM1 9600 AS 1 Set up CIO COMASS as standard COM1 OUT TXRX TX Enable COM as a transmitter CMD 01020E0600 Configure module PRINT 1 CMD Send the configuration data OUT TXRX RX Set CIO COM485 to receive RESULTS INPUT 4 1 Read back configuration result GOSUB DELAY Wait for module to configure OUT TXRX TX CMD 02L0 090 00 Configure low alarm limit to 90 C PRINT 1 CMD GOSUB DELAY The remote module the CIO COM485 is communicating with is also an RS485 device
17. mputer s 32 bit PCMCIA drivers are enabled This can be checked using the following Windows 95 sequence Right Click on My Computer select Properties then Performance It should read 32 bit If not enable 32 bit shut down your com puter and try the above procedure again DOS AND OR WINDOWS 3 1 Most users are now installing boards on systems with at least Windows 95 operating systems However if you wish to install the PCM COM in a machine running Win dows 3 1 and or DOS you will need to use the DOS based Card amp Socket services routine This is included with most newer computers However if you need to pur chase these routines they are available After you have installed all the software using the automated install program please run InstaCal CARD amp SOCKET SERVICES The following section describes Card amp Socket Services and should help you deter mine whether or not you need to install CSS Card and socket services for your PCM card are on a disk labeled PCM Board Card amp Socket Services We will refer to Card amp Socket Services as CSS for the remainder of this manual The software from that disk should be installed if you do not already have CSS support on your PC What is CSS CSS is a program that communicates with your computers PCMCIA interface control ler and configures it The PCMCIA interface is configurable unlike the standard ISA bus you may be familiar with If you plug a PCMCIA board in
18. nto the C CB directory INSTACAL EXE Installation amp calibration program and related help files CB CFG I O Board address interrupt and configuration file CBCLIENT EXE PCMCIA Card amp Socket Services UniversalLibrary Programming language support in sub directories CBW DLL Windows language DLL CBUL 386 Windows language VxD If you are using DOS or Windows 3 x you may run InstaCAL simply by typing INSTACAL and hitting return Because the directory C CB was added to your PATH statement you can run InstaCal from any directory From Windows 3 x use the RUN command and RUN C CB Instacal exe assumes you loaded your software onto drive C If not substitute the correct drive letter InstaCal will automatically detect your PCM COM board and install it at an appropri ate address If you are not running Win 95 you may now choose to change or accept the defaults for the various options In Windows 95 the address interrupt is set by the Windows 95 operating system Once done exit InstaCal This will update and save the con figuration file CBI CFG in the C CB directory COM PORT In DOS Win 3 x the PCM COM may be set to operate at any one of the four COM ports COM1 COM2 COM3 or COM4 COM Port HEX RANGE INTERRUPT COM 1 3F8 3FF 4 COM 2 2F8 2FF 3 COM 3 3E8 3EF 4 or COM 4 2E8 2EF 3 or CSS VO ADDRESS EXCEPTIONS CSS examines your computer s I O address space looking for addresses which are available IF AN AD
19. o gram will install all the software required to run the PCMCIA board as well as the UniversalLibrary Launching InstaCAL Prior to starting InstaCAL reboot your computer so the various changes made to your start up files are active From the DOS prompt you may start InstaCAL by simply typing InstaCal and hitting enter From Window 3 x use the file manager to find InstaCAL exe It should be on your main hard drive in a directory called CACB if CA is your main hard drive To launch InstaCAL simply double click on the file InstaCAL exe You may also launch InstaCAL use the FILE menu select RUN type InstaCAL and click on OK From Win95 use Start Run type InstaCAL at the prompt and click OK Using InstaCal InstaCal is the Installation Calibration and Test software supplied with your I O board After installing InstaCal you should restart your computer to take advantage of changes made to the AUTOEXEC and CONFIG files If you have a PCM board installed in a PCM slot in your computer the first message InstaCal displays is Card PCM COM found in slot 5 A dialog box opens allowing you the choice to install or not install the software con figuration for your PCM card Install the card by choosing yes Two additional dialog boxes will open One shows the boards currently installed in your configuration file the second allows you to choose a board number to assign to the PCM card you are currently installing If thi
20. or I O testing Some exter nal tests may require an external voltage source and ohmmeter All required equipment and connections will be listed by InstaCAL If the I O Test Menu lists the option Plot the select it and make then connections as shown to test your card RUNNING INSTACAL InstaCal is the Installation Calibration and Test software supplied with all I O boards InstaCal must be run to set the base address and interrupt of the PCM COM In addi tion to procedures for testing of your PCM COM InstaCal creates a configuration file which is used by the UniversalLibrary INSTALLING AND LAUNCHING INSTA CAL From WINDOWS 95 Place the InstaCal disk in your floppy drive Select START then RUN then enter A Setup and hit return InstaCal will then be installed on your hard disk To run InstaCal in Windows 95 you may either use the START RUN procedure then type InstaCal and hit return You may also go to your My Computer Icon select the drive that INSTACAL was installed on select the CB directory find InstaCal exe and double click on it you may also wish to create an InstaCal shortcut using the Create Shortcut function InstaCal will automatically detect your PCM COM board You may now choose to change or accept the defaults for the various options Once done exit InstaCal This will update and save the configuration file CBLCFG in the C CB directory Your installation is now complete You may now want to try
21. s is your first installation simply hit enter to accept the default of BOARD 0 If you have other boards already installed choose a board number not currently in use InstaCAL will do the rest of the initial installation of your PCM board selecting addresses and other system resource settings which are not your choice to select InstaCal help is available by pressing the F1 function key Most of InstaCal is intui tively obvious and for that reason there is no user s manual for InstaCal Once done exit InstaCal This will update and save the configuration file CBLCFG in the C CB directory InstaCal selects and sets the I O address and interrupt level from the range of available options The address and other information is stored in the configuration file CB CFG This file is accessed by the Universal Library for programmers Note also that the Universal Library is the I O board interface for packaged applications such as Labtech Notebook and HP VEE therefore the InstaCal settings must be made in order for these and other applications to run The board s base address is also stored in the system software Once InstaCal installa tion software is run other programming methods such as direct IN and OUT state ments can write and read the PCM card registers by reference to the base address and the offset from base address corresponding to the chart of registers located elsewhere in this manual But a word of warning is in order here Direc
22. s not available Information on writing COM drivers interrupt service routines and other programming tasks related to the personal computer or PCMCIA slots is not available from Computer Boards We support the use of the PCM COM through standard COM Port drivers and from high level languages using UniversalLibrary and the example programs pro vided If there is an extension to the UniversalLibrary that would be of use to you please FAX your request to the attention of Software Engineering 17 CONTROL REGISTERS ARE 8 BITS All VO access may be performed as bytes Eight bit or sixteen bit addressing is con trolled by the CSS which is currently set for 8 bit addressing as supplied by Com puterBoards The reason the CBCLIENT EXE uses 8 bit addressing is that the 16550 has an 8 bit data bus The registers are presented in 8 bit format here ADDRESS WRITE READ Base 0 Transmit Holding Receive Holding Base 1 Interrupt Enable No function Base 2 FIFO Control Interrupt Status Base 3 Line Control No function Base 4 Modem Control No function Base 5 No function Line Status Base 6 No function Modem Status Base 7 Signal Configuration Read Back Signal Configuration PORT ADDRESSES amp FUNCTIONS BASE 7 SIGNAL CONFIGURATION REGISTER The signal configuration port controls the electrical behavior or the transmission and control lines The register functions differently for the PCM COM422 and
23. st transients for industrial process measurement and control equipment Carl Haapaoja Director of Quality Assurance ComputerBoards 2 Commerce Park Blvd Middleboro MA 02346 Tel 508 946 5100 Fax 508 946 9500 E mail infocomputerboards com www computerboards com
24. t writes to the addresses simply by refer ence to the base address of the PCM card I O registers is not advised Since the addresses assigned by the PCM plug amp play software are not under your control there is no way to guarantee that your program will run in any other computer Not only that but if you remove and then reinstall your PCM board the plug amp play software may not choose the same address during the second or subsequent installa tions It is best to use a library such as Universal Library or a program such as HP VEE to make measurements with your PCM card TESTING THE INSTALLATION After you have run the install program and set your base address with InstaCal it is time to test the installation The following section describes the InstaCal procedure to test that your board is properly installed With InstaCal running choose the TEST item on the main menu a b Select the board you just installed If the choice Internal Test is available then select Internal Test If not pro ceed to v below The internal control registers of the board will then be tested If this test is successful your board is installed correctly If the Internal Test is completed successfully you may want to check that the I O pins are working correctly To check this select External Test and follow the instruction provided This will require you to use the shorting wires sup plied with the board to connect inputs to outputs f
25. this manual 15 CALIBRATION amp SERVICE There is no calibration required The case may not be opened and there are no parts inside which you can service There are no socketed components Opening the PCM COM case will void your warranty Do not open the case or attempt to service the PCM COM If your PCM COM requires service please return it 16 1 O ADDRESS MAP amp REGISTER FUNCTIONS A base address register marks the beginning or Base Address of the I O addresses occupied by the control registers of the PCM COM In all 8 addresses are occupied The base address assigned by InstaCal or Windows is stored in the CB CBG file and read by the CSS installed in your computer Please read about installing and using InstaCal CONTROL REGISTERS Once CSS is installed and a base address has been established the PCM COM may be controlled by writing to and reading from the control registers While it is possible to write your own control routines for the PCM COM for most applications a standard com software package will be adequate NOTE ON REGISTER PROGRAMMING SUPPORT While the complete register map is explained here only very limited support for assembly language or direct register programming is available If you have a question regarding direct register programming you must FAX it The engineering department does not accept technical support calls but will answer faxes The ASSEMBLY source code to the Universal Library i
26. to a PCMCIA slot and have not yet run CSS you will have no access to the functions of that PCMCIA board Does CSS use system resources Yes The CardSoft Card and Socket Services device drivers which are installed in your CONFIG SYS use about 61K of memory These files can be installed DEVICE HIGH The CBCLIENT EXE installed in your AUTOEXEC BAT uses about 10 K of mem ory The CBCLIENT EXE program is a TSR Terminate and Stay Resident You may modify the program line to LOADHIGH the TSR We have tested it both high and low with and without Windows and a variety of other applications We believe it is a safe TSR that will not cause any system problems How do I know CSS is installed and running There is a simple test Just plug in your PCM card If CSS is installed and working the computer will beep You can remove and replace your PCM card as often as you like and need not power down to do so The computer should beep each time you insert the PCM card What about CSS for multiple PCM boards Once the current version of CSS is installed CSS is installed for all PCM boards included in that version of CSS As new PCM boards become available they will be added to the CSS and you will want to always have the most recent version of CBCLIENT EXE installed in the C CB directory Let the installation software do this for you You can run multiple PCMCIA boards with the CBCLIENT EXE CSS and if you have another CLIENT program running for oth
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