Universal RS-422/485 2 Port Serial Boards New
Contents
1. 2 DB9 male Data signals Surge protection Opto isolation Operating temp Power requirement Dimensions TxDB TxDA RxDB RxDA RTSB RTSA CTSB CTSA GND max 2000V C102HIS max 2000V C102HI C102HIS 0 55qJ C102P C102H 200mA max 45V C102HI C102HIS 750mA max 45V 15 7cm 8 3cm C102P C102H 15 7cm 40 5cm C102HI C102HIS Introduction Chapter 1 Check List Upon unpacking the C102 Family you should find the following items in the package 1 C102 Family dual port RS 422 RS 485 board 2 This User s Manual 3 DOS API 232 Windows NT and Windows 95 device driver diskettes T E3 E 4 C102 Family System Support The C102 Family is compatible with various operating systems such as SCO UNIX XENIX OS 2 QNX and Linux In addition Moxa supports DOS Windows NT and Windows 95 device drivers for C102 Family for better installation configuration and performance See the driver list below Chapter 1 Introduction C102 Family DOS 4 Windows 3 1 C Windows NT 4 Windows 95 4 Linux C QNX C SCO UNIX OpenServer C SCO XENIX C OS 2 C FreeBSD C V Driver supported by Moxa and shipped with product R Driver supported by Moxa but shipped by request C Driver supported by OS Note MOXA FTP site is available for driver download Chapter 2 Installation The installation of C102 Fam2. tty2a tty2b second C102 Be sure to activate the device by using SCO command enable ttyxx 46 Appendix C PC 1 0 Port Address Map The following is the list of the I O port addresses commonly used which is good for preventing I O address conflict when configuring C102 Family 10 Address 000 01F DMA controller 1 020 03F interrupt controller 040 05F DMA page register Math coprocessor Prototype card O 300 31F Prototype card 360 36F Reserved Reserved S O Monochrome displa Diskette controller 47
3. In accordance with the point to point operation shown above there are a couple of setting combinations for Tx and Rx 1 Point to point full duplex operation Set Tx Rx to Always On Always On 2 Point to point half duplex operation For echo mode set Tx Rx to By Register Always On or By RTS Always On For non echo mode set Tx Rx to By Register By Register or By RTS By RTS Multidrop Multidrop communication means that more than two devices can be linked together to communicate with one another via RS 485 interface In this operation one of the device serves as master device while the rest of the devices as slaves Normally master will send data to individual slave and the slave will receive the data according to its ID or any site specific identification embedded in the data This is how master communicate with each slave However broadcasting is also possible if the master sends data without any ID to all the salves 34 Operations Chapter 7 Depending on the wiring half duplex or full duplex can be used Multidrop RS 485 Half duplex Multidrop RS 485 Full duplex C102 site Remote site 1 Master Slave 1 TxDA TxDA 4RxDA RxDA 2TxDB4 r TxDB 3 RxDB RxDB 5 GND GND Remote site n Slave r TxDA RxDA TxDB RxDB GND C102 site Master 1 TxDA 4RxDA Remote site 1 Slave RxDA TxDA RxDB 2 TxDB 3 Rx
4. 4 Kbps will work at 38 4 Kbps for sure while a port if set to High Speed Spectrum with displayed speed 38 4 Kbps will actually work at 307 2 Kbps 38 4 Kbps 8 4 6 MOXA Serial Comm Tool Comm PComm is a software package consisting of MOXA serial communication library and utilities for diagnostic and monitor as well as example programs under Windows NT 95 Please see Chapter PComm for details 4 7 Troubleshooting The error messages and solutions are stated as clearly as possible If all the 21 Chapter 4 For Windows 95 Users possible solutions fail the board or connection box might be defective Please check the board or connection box ONE AT A TIME in the system and find out the defective one If necessary contact and report it to your dealer at once for replacement or repair 1 Can not find the configured C102 CAP 0xXXXX To avoid this please double check the board settings via clicking on Start button then Programs menu then MOXA Utilities menu and then MOXA C102 C104 C168 Configuration Panel icon for each board installed then shut down the system before checking the following items Plug in the board s properly Inspect carefully on the setting of I O address for each board installed Sometimes slot for plugging board is malfunctional In this case please try other slots until good one is found The board might be defective Make sure the jumper JP1 is always open and the I O ad
5. as 0x180 the default CAP address or the 1st port s I O address you must try to avoid the conflict by doing either one the following a b Install a jumper short at position JP1 on the upper left corner of the board This will force the CAP address to 0xA700 Change or disable the existing board s I O address 4 What to do if user forgets or does not know the Configuration Access Port 42 Troubleshooting Appendix A CAP address of C102 The C102 Family multiport boards are designed without jumper or switch so the configuration is completed only by DOS utility Io irq exe To configure the board you need to know the board s Configuration Access Port CAP address Because the CAP address is the only channel via which the Io irq exe can access to the board The following procedure instructs user to recover once the CAP is unknown Power off the PC Install jumper onto the JP1 of the board Power on the PC Now the CAP address of the board will be 0xA700 Execute Io irq under DOS environment A gt Io irq 43 Appendix A Troubleshooting Enter CAP address 0xA700 to access the board Enter the Configuration Access Port in HEX A700 The previous hardware configuration will be shown Modify them if necessary Remember the CAP address this time Power on the PC 44 Appendix B SCO UNIX KENIX Standart Because the SCO UNIX OpenServer XENIX has bundled a 2 port board driver ad
6. details 7 2 RS 485 The RS 485 standard is an enhanced version of the RS 422A balanced line standard It allows multiple drivers and receivers in a multidrop systems As many as 32 drivers and 32 receivers can be put on any multidrop system There are basically two operations for RS 485 point to point and multidrop And each operation has half and full duplex options For half duplex there are still echo and non echo modes Since TxDB and RxDB are wired together see pictures below whatever data sent from TxDB will be received by RxDB of the local site and of course the RxDB of the other site If the local RxDB is enabled to receive data it is called echo mode Otherwise the local RxDB is disabled and it is called non echo mode If the port feature is set to By RTS By RTS only the non echo mode is possible See Chapter 7 Programming Section 7 2 RS 485 Programming for details Point to point Point to point communications means two devices located at two different places can be linked together to communicate via RS 485 interface Depending on the wiring half duplex or full duplex can be used 33 Chapter 7 Operations Point to point RS 485 Half duplex Point to point RS 485 Full duplex C102 site Remote site C102 site Remote site 1 TxDA TxDA 1TxDA RxDA 4 RxDA RxDA 4RxDA TxDA 2 TxDB TxDB 2TxDB RxDB 3 RxDB J RxDB 3RxDB TxDB 5 GND GND S5GND H GND
7. duplex operation For echo mode set Tx Rx to By Register Always On or By RTS Always On For non echo mode set Tx Rx to By Register By Register or By RTS By RTS 3 Multidrop full duplex operation Set Tx Rx of the master to Always On Always On Set Tx Rx of the slaves to By Register Always On or By RTS Always On 4 Multidrop half duplex operation For echo mode set Tx Rx of the master and slaves to By Register Always On or By RTS Always On For non echo mode set Tx Rx to By Register By Register or By RTS By RTS Chapters For Windows NT Users In this chapter driver installation configuration and upgrade removal procedure are described Utility Mxtty is explained which is good for terminal emulation and file transfer Related issues such as baud rate settings existing applications and programming are also stated Finally Windows NT specific troubleshooting is included 3 1 Software Installation The following is the procedure for installing the C102 Family device driver under Windows NT 4 0 or NT 3 51 1 Login NT as Administrator 2 Enter Control Panel group then select Network icon and then Adapters folder Enter Control Panel folder and then select Network icon for NT 3 51 3 Click Add button then Have Disk button for Select Network Adapter Click Add Adapter button and then lt Other gt Requires disk from manufacturer item for Netwo
8. 2 MOXA board found but can not transfer transmitting receiving data Hardware Causes and Solutions 41 Appendix A Troubleshooting a b c Check if wrong cable wiring Refer to Chapter 6 for proper wiring Cable is defective IRQ is used or reserved by PCI bus Software Causes and Solutions a C C102 Family will check line status CTS before it sends data out if RTS CTS flow control feature is set to ON in configuration or application program Perhaps the application controlling the board is not correctly written according to the corresponding API of the operating system To verify please run existing and known good application or Moxa provided utility For example under Windows 95 Hyperterminal is good for testing COM ports IRQ settings of software and hardware do not match 3 Why the DOS utility IQ IRQ can not access C102 to configure There are several reasons that may lead to this trouble a b C d The user forgets or does not know the Configuration Access Port CAP of the board See next problem 4 for how to solve this problem The CAP of the board conflicts with other add on boards I O address Please change other add on boards I O address to avoid the conflict The C102 board is not plugged in a right or good slot Please plug the board in a good 16 bit ISA slot The C102 board may malfunction Please return for repair If any existing board has the same I O address
9. 3 For Windows NT Users 2 Select MOXA C102 C104 C168 Adapter in adapter list and then Remove button to start removing the MOXA board 3 5 Baud Rate Settings When C102 H Series board is configured as High Speed Spectrum any port driven by the Moxa provided driver will display the exact working speed For example the displayed speed 38 4 Kbps is equal to the working speed 38 4 Kbps However if the port is driven by non Moxa provided driver such as standard serial driver the real working speed is equal to 8 times of the displayed speed For example a port if set to Normal Speed Spectrum with 38 4 Kbps will work at 38 4 Kbps for sure while a port if set to High Speed Spectrum with displayed speed 38 4 Kbps will actually work at 307 2 Kbps 38 4 Kbps 8 3 6 MOXA Serial Comm Tool Comm PComm is a software package consisting of MOXA serial communication library and utilities for diagnostic and monitor as well as example programs under Windows NT 95 Please see Chapter Comm for details 3 7 Troubleshooting The error messages and solutions are stated as clearly as possible If all the possible solutions fail the board or connection box might be defective Please check the board or connection box ONE AT A TIME in the system and find out For Windows NT Users Chapter 3 the defective one If necessary contact and report it to your dealer at once for replacement or repair 1 Can not find the configured C102 C
10. 80 1st port 0x188 2nd port IRQ 10 shared by 4 8 ports INT Vector 0x1C0 Configuration Access Port CAP 0x180 4 Power on the PC and enter into DOS system 5 Run the utility Io irq exe contained in the driver diskette to set up I O address IRQ and INT vector of the board Follow the on line help to configure the C102 Family board After completing the hardware configuration the board is ready for use under operating systems such as Windows NT 95 SCO UNIX DOS etc Note that the CAP address e g 0x180 is identical to the first port s I O address except in one case that the JP1 jumper is installed before powering on the PC In this case the CAP address will be forced to 0xA700 The CAP address must be typed correctly With the correct CAP address the utility can find the configuration stored in the on board EEPROM and display it on the configuration panel The CAP address is the only channel via which the configuration utility Io irq exe can access the board Installation Chapter 2 The followings are fields for configuration Port Index Indicate the port index for each port I O address Enter the base I O address for each port either sequentially or not Avoid to conflicting with any other devices Speed This field specify the use of normal or high speed capability Normal speed ranges from 50 bps to 115 2 Kbps High speed ranges from 50 bps to 921 6 Kbps C102 H Series supported both normal an
11. AP 0xXXXX To avoid this please double check the board settings from the driver configuration for each board installed then shut down the system before checking the following items Plug in the board s properly Inspect carefully on the settings of I O address for each board installed Sometimes slot for plugging board is malfunctional In this case please try other slots until good one is found The board might be defective Make sure the jumper JP1 is always open and the I O addresses are not occupied by other devices 2 The C102 s software and hardware configuration mismatch CAP 0xXXXX To avoid this please check the board settings of the software configuration via entering Control Panel group then Network icon then Adapters folder and then MOXA C102 C104 C168 Configuration Panel icon for each board installed then shut down the system and run Io irq exe to check the board settings of the hardware configuration Make sure both are same The board might be defective Chapter4 For Windows 95 Users In this chapter driver installation configuration and upgrade removal procedure are described Utility Mxtty is explained which is good for terminal emulation and file transfer Related issues such as baud rate settings existing applications and programming are also stated Finally Windows 95 specific troubleshooting is included 4 1 Driver Installation Setup95 exe 1 2 Run Setup95 exe
12. C102 Universal RS 422 485 2 Port Serial Boards New generation multiport serial boards family with state of the art ASIC technology Sep 1997 4th edition All Rights Reserved m This documentation is copyrighted by Moxa Technologies Co Ltd All rights are reserved Moxa Technologies reserves the right to make improvements to the products described in this manual at any time without notice Information provided in this manual is intended to be accurate and reliable However Moxa Technologies assumes no responsibility for its use nor for any infringements of rights of the fourth party which may result from its use MOXA is a registered trademark of Moxa Technologies Co Ltd The other trademarks in this manual belong to their manufacturers individually Turm AC Emo nliime Mocess Serset Moxa Technologies Co Ltd Moxa Tech USA CA Tel 866 2 8665 6373 Tel 408 734 2224 Fax 886 2 8665 6372 Fax 408 734 4442 WWW moxa com tw support moxa com tw MOXA Moxa Internet Service P d Customer s satisfaction is always our number one concern To ensure customers get the full benefit of our services Moxa Internet Services MIS have been built for technical support product inquiry new driver upgrade etc The followings are the services we provide E mail for technical support address support moxa com tw Ftp site for free driver upgrade address ftp moxa com or ftp moxa com tw userID ftp pass
13. Cs and reduces the board to half size The whole family supports 16 bit architecture Full range of I O addresses and IRQs are available In addition with on board EEPROM for storing the configuration data the family is designed without jumper or switch These features make each port on the board truly independent to any other port and thus compatible with most existing non intelligent boards Hardware Configuration Method JP1 Switch ra T E3 7 GHEE U ON WEAR kw i Jumper C102 Family Former C102 Chapter 1 Introduction New set I O address Traditional set switch and and IRQ via software and jumper manually for Utility I O address and IRQ Instead of using traditional jumper or switch for IRQ and I O address settings hardware configuration of each port is easily set by DOS utility Io irq exe which read and write the on board EEPROM for configuration information through the CAP Configuration Access Port address The CAP address is the only channel via which the configuration utility Io irq exe can access the board which is identical to the first port s base I O address The only jumper JP1 is designed in case that users forget the CAP address Normally JP1 is left open When JP1 is short the CAP address is forced to a fix
14. DB 5 GND TxDB GND Remote site n Slave RxDA TxDA RxDB TxDB GND In accordance with the multidrop operations shown above there are a couple of setting combinations for Tx and Rx 1 Multidrop full duplex operation Set Tx Rx of the master to Always On Always On Set Tx Rx of the slaves to By Register Always On or By RTS Always On 2 Multidrop half duplex operation For echo mode set Tx Rx of the master and slaves to By Register Always On or By RTS Always On For non echo mode set Tx Rx to By Register By Register or By RTS By RTS Chapter 7 Operations 36 The C102 Family boards could be used as either RS 422 or RS 485 8 1 RS 422 Programming When RS 422 is needed there is no difference from RS 232 in programming except that the cable wiring must refer to RS 422 s and the Tx enable and Rx enable port features must be set to Always On in the Io irq board configuration software For cable wiring please refer to Chapter 6 Operations for RS 422 operation details 8 2 RS 485 programming The C102 Family has two independent ports and each port has one receiver Rx and one driver Tx Both driver and receiver can be either enabled or disabled in order to achieve point to point half full duplex communication but also the multidrop half full duplex communication See Chapter 6 Operations for RS 485 operation details The princi
15. apter 6 For DOS Users For complete and last minute API 232 function description see file API 232 TXT in the API 232 directory for more details 6 5 Data Scope The Data Scope BINSSCOPE EXE is a suite of utility programs that can help users with system troubleshooting and serial communication debugging There are three major functions 1 The Data Scope utility offers transparent monitoring of serial communication lines and allows data to be streamed to disk storage for later analysis 2 The TTY terminal emulation utility allows user to view the signal status and transfer data interactively or files using ASCII XMODEM YMODEM ZMODEM and KERMIT protocols 3 The diagnostic test utility provides port connection test with two MOXA ports connected via a properly wired cable Please see on line help as running BIN SCOPE EXE for more usage and capability information 30 Chapter 7 Operations The C102 Family is particularly designed for RS 422 485 communications For RS 422 communications there is two types of operation point to point full duplex and broadcasting However for RS 485 communications there are various operations for various applications To be able to make the desired RS 422 RS 485 operation work there are four things to do 1 Correctly install and configure the C102 board See Chapter 2 Installation for details 2 Correctly configure the driver See Chapter 3 5 for details 3 Correct cable wiring Se
16. cess of the I O address is not allowed such as Windows 95 and Windows NT By RTS or By RTS is recommended instead 3 By RTS or By RTS The Tx enable or Rx enable port feature can be set to By RTS or By RTS in the Io irq board configuration software The driver and receiver are controlled independently The driver is enabled if driver is set to By RTS and the RTS signal is on The driver is disabled if driver is set to By RTS and the RTS signal is off If receiver is set to By RTS and the RTS signal is on the receiver is disabled If receiver is set to By RTS and the RTS signal is off the receiver is enabled By RTS or By RTS is suitable for any system that allows RTS control from application programs Any one of the statements as following will set 39 Chapter 8 Programming RTS signal true and turn on the driver or turn off the receiver sio_RTS port 1 or sio putb x Or outportb BASE 4 2 turn on RTS turn on RTS before data sent turn on RTS direct I O access Where BASE is the base I O address of the UART of the port Any one of the statements as following will clear the RTS signal and turn off the driver or turn on the receiver sio_RTS port 0 or sio_putb_x or outportb BASE 4 0 turn off RTS turn off RTS after data sent turn off RTS direct I O access Where BASE is the base I O address of the UART o
17. d High Speed Spectra such as C102H C102HS and C102HIS For C102 non H Series only Normal Speed Spectrum is supported In other word to use speed faster than 115 2 Kbps e g 460 8 Kbps C102 H Series set to High Speed Spectrum is required Note that currently port that uses MOXA Windows 95 and Windows NT driver will run at the displayed speed To be clear when C102 H Series board is configured as High Speed Spectrum any port driven by the Moxa provided Windows 95 NT driver will display the exact working speed For example the displayed speed 38 4 Kbps is equal to the working speed 38 4 Kbps However if the port is driven by non Moxa provided driver such as standard serial driver or Moxa drivers other than Windows 95 NT such as DOS the real working speed is equal to 8 times of the displayed speed For example a port if set to Normal Speed Spectrum with 38 4 Kbps will work at 38 4 Kbps for sure while a port if set to High Speed Spectrum with displayed speed 38 4 Kbps will actually work at 307 2 Kbps 38 4 Kbps 8 Chapter 2 Installation The following is the 8 times speed mapping list for quick reference purpose Normal Speed Spectrum High Speed Spectrum 50 bps 400 bps 75 600 110 880 134 5 1076 150 1200 300 2400 600 4800 1200 9600 1800 14 4K 2400 19 2K 4800 38 4K 7200 57 6K 9600 76 8K 192K 153 6K 38 4K 307 2K 57 6K 460 8K 115 2K 921 6K IRQ Enter the IRQ 2 3 4 5 7 10 11 12 or 15 for each
18. ditional driver is not necessary The following description is based on the SCO UNIX XENIX driver Use the following SCO UNIX OpenServer XENIX command to start the software installation of a new serial board mkdev serial The screen will show You would like to install a 1 1 port card 2 2 port card 3 4 port card A uns Enter number 2 to choose 2 port card The screen then shows The card is configured as 1 COMI 2 COM2 3 COM3 4 COMA Choose either 1 COMI with IRQ 4 or 2 COM2 with IRQ 3 Then the screen shows Which card do you have 45 Appendix B SCO UNIX XENIX Standard Driver for C102 1 Arnet base address Oxaaa 2 Arnet base address Oxbbb 3 Hostess base address Oxccc 4 uses Select the compatible such as Arnet or Digi However Hostess AST and CTC are designed to use the eighth byte of the UART as the interrupt vector and those are not compatible with MOXA For example if the C102 is configured as COMI one possible configuration would be IRQ 4 i e COMI I O base address 0x280 Arnet compatible Vector 0x2C2 0x280 offset 0x42 If the C102 is configured as COMO one possible configuration would be IRQ 3 i e COM2 I O base address 0x300 Arnet compatible Vector 0x342 0x300 offset 0x42 Once the installation is successfully completed the following serial devices along with their modem devices upper case will be added to the system ttyla ttylb first C102
19. dresses are not occupied by other devices 2 The C102 s software and hardware configuration mismatch CA P 0xXXXX To avoid this please check the board settings of the software configuration via clicking on Start button then Programs menu then MOXA Utilities menu and then MOXA C102_C104_C168 Configuration Panel icon for each board installed then shut down the system and run Io irq exe to check the board settings of the hardware configuration Make sure both are same The board might be defective 22 Chapter 5 PComm PComm the professional serial comm tool for PC is a software package under Windows NT 95 which consists of powerful serial communication library for easy programming in most popular languages useful utilities such as diagnostic and monitor illustrative example programs and comprehensive on line documents The serial communication library is especially for users who develop a system for data communication remote access data acquisition or industrial control in the Windows NT 95 environment which offers an easier solution compared with the more complex Windows Win32 COMM API 5 1 Installation To install PComm please run Setup exe in the diskette Note that the MOXA Windows NT 95 device driver is required as using PComm diagnostic and monitor utilities 5 2 Programming Library The serial communication library is to assist users to develop programs for serial communications for any COM port com
20. e 22 Troubleshootini nennir e dee tete 23 EPCOWIIH Ce dioi es a a a rd odas a ee Wd Ea p dS 25 Installation nc eoi Cou SA us 25 Programming Library eene 25 Unc a eee et E TE RN 26 For DOS USBIS 2 oe oie et re eh ees 27 Driver Installation Setup Loading and Unloading 27 MOXA Serial Port Naming Convention 30 Batic Rate Seung ci e aer des ee cete equ aae 31 DOS API 232 Library and Programming 3l Data SCoDe ccc a alate Ms 32 Operations cite D 33 RS 12 ceo pido edet aes 34 Dee ro H 35 Programming sssssssssssseeeemm 39 RS 422 PrOPFAIBIDIng iite intra ite tne race end tus 39 RS 485 programming 2 eei eto ee dere deret reddas 39 Troubleshooting ssssssssss 43 SCO UNIX KENIK Standard 47 PCI 0 Port Address Map 49 Chapter 1 Introduction 1 1 Overview The Industrial Multiport Async Solution The C102 Family including C102P C102H C102HI and C102HIS supports 2 independent RS 422 RS 485 serial ports It offers reliable communication link over a longer distance 4000ft It is best suitable for industrial environment Connections with point to point or multidrop and full duplex or half duplex are available to meet user s needs The C102 Family is equipped with a custom designed ASIC chip which replaces lots of conventional I
21. e Chapter 6 Operations for details 4 Correct programming See Chapter 7 Programming for details The C102 has two DB 9 male connectors Their pin assignments are Pin no Signal TxDA TxDB RxDB RxDA GND RTSA RTSB CTSB CTSA OMDADNAWN KH 31 Chapter 7 Operations The following comparison table is for E A Standards RS 422 and RS 485 4 Mode of operation Max length FT Max Rate bps RS 485 differential 4000 10M 7 1 RS 422 The RS 422 standard uses a balanced voltage digital interface to allow communications of 10 Mbps on cable length of 4000 feet Ten receivers can be connected to any one driver for broadcasting systems The followings are operation modes for RS 422 RS 422 Point to point full duplex RS 422 Broadcasting C102 site Remote site C102 Site Remote Site 1 1 TxDA RxDA 1 TxDA RxDA 2 TxDB RxDB 4 RxDA TxDA 3 RxDB TxDB 2 TxDB RxDB 4 RxDA TxDA 3 RxDB TxDB 5 GND GND 5 GND GND 6 RTSA CTSA 7 RTSB CTSB i 8 CTSB RTSB Remote site n 9 CTSA RTSA RxDA TxDA RxDB TxDB GND 32 Operations Chapter 7 For RS 422 communications do set Tx Rx port features in the Io irq hardware configuration utility to Always On Always On and then use point to point full duplex or broadcasting operation See Chapter 2 Installation Section 2 1 Hardware Configuration Io irq exe for
22. ed I O address 0xA700 To prevent the boards from damage caused by lighting or high potential voltage surge isolation protection technology is introduced in some models to protect the board Because the family is so flexible in hardware configuration that they are compatible virtually with all kinds of other manufacturer s non intelligent multiport boards using 16450 or 16550 UART The family is operational under most popular operating systems such as DOS Windows 3 1 Windows NT Windows 95 SCO UNIX XENIX OpenServer OSA Linux QNX FreeBSD etc However MOXA device drivers for DOS Windows 95 and Windows NT are provided for better installation configuration and performance In this manual chapters for MOXA DOS Windows 95 and Windows NT device drivers and appendix for SCO UNIX XENIX standard driver are included For other compatible systems not mentioned please refer to system s manual for how to install and configure the standard driver Introduction Chapter 1 MOXA Serial Comm Tool For easy application development MOXA provides an easy use serial communication library under Windows NT 95 Comm and Windows 3 x DOS API 232 Users can use this library to develop your own applications using Microsoft C Turbo C Assembly QuickBASIC Turbo Pascal Clipper Visual Basic Visual C Borland Delphi etc Utilities such as diagnostic and monitor are included for diagnosing the board port or monitoring the communication stat
23. f the port For details about API 232 function sio RTS and sio putb x please refer to the LIB Readme txt file in API 232 driver diskette and sample C program EXAMPLE C rs485 c 40 Appendix A Troubleshooting Common C102 Family problems and possible solutions are listed below If you still have problems contact your dealer or Moxa for help Or report it using Problem Report Form at the end of this manual to your dealer at once for faster technical support 1 MOXA board not found Hardware causes and solutions a The base I O address you have selected for the board conflicts with that of other interface boards such as SCSI LAN or Sound boards If so adjust the address to forestall the conflict The board is not properly plugged in the system If that is the case then re install the board and make sure that it fits well in a 16 bit slot this time Sometimes the slot for plugging board is bad In this case please try other slots until a good one is found The board is not installed or missing absent Please install it The board is out of order Please check the board s ONE AT A TIME in the system and find out the defective one It is also recommended to check it under DOS with F3 Diagnostics function of utility SETUP to verify the hardware conditions Software Causes and Solutions a The base I O address settings on board is not the same as the settings in configuration software
24. ily is as follows 1 Start with hardware configuration See next Section for Io irq exe 2 Continue with the software driver installation according to the corresponding operating system chapters for details In this manual chapters for MOXA DOS Windows 95 and Windows NT device drivers are included For other compatible systems not mentioned please refer to system s manual for how to install and configure the standard driver Remember to keep the hardware settings in mind for the software installation After this users already complete the whole installation 2 1 Hardware Configuration lo irq exe Because the ASIC designed C102 Family has no switch no jumper users must configure the I O address IRQ INT Vector etc of the boards via utility Io irq exe before proceeding to install To set up the hardware configuration for C102 Family please run Io irq exe in the driver diskette under DOS system 1 Choose a PC that has DOS system inside 2 Power off the PC Chapter 2 Installation 3 Make sure no hardware conflict and plug the board in a free 16 bit slot of the PC one board at a time with JP1 open amp If you are installing multiple boards insert one board at a time and configure it using the Io irq program before inserting the next board This is to prevent conflict between two boards with same default hardware settings The C102 Family has the following default factory settings I O address 0x1
25. in the driver diskette Select MOXA C102 C104 C168 Family Driver to install the driver When MOXA C102 C104 C168 Configuration Panel is popped up to configure the board s and ports please refer to the Section Board and Port Configuration for more details After this users already complete the whole installation Restart Windows 95 Check the board initialization status after logging in the system Refer to Section Board Initialization Status Check for details 4 2 Board and Port Configuration You will enter the configuration program when installing the driver Or you can 18 For Windows 95 Users Chapter 4 click on the Taskbar Start button then select Programs menu then MOXA Utilities menu and then MOXA C102_C104_C168 Configuration Panel icon When the configuration panel is popped up Click Add button to add a board Click Remove button to remove a board Click Properties button to set up a board with correct Board Type IRQ INT Vector I O Address COM Number and Received FIFO Trigger Level where the possible parameters are as follows Board Type C102 Family IRQ 2 3 4 5 7 10 11 12 15 INT Vector I O address for interrupt vector from 00000H to OFFFFH To use INT vector type in the hardware INT vector I O address If not using INT vector type 0 or leave blank as the INT vector There are two modes for the C102 driver One is using INT vector the other i
26. level of each port independently For 16550 compatible type of UART receive FIFO trigger level is 1 4 8 or 14 bytes For 16450 compatible UART only one byte is available no matter what you set At most 4 boards of C102 C104 C168 Family can be installed together as long as the IRQ and I O address resources are sufficient and available in a 14 For Windows NT Users Chapter 3 system 3 Unless the system restarted the latest configuration will not take effect 3 3 Board Initialization Status Checking There are two alternative ways to find out if ports of the board are initialized successfully 1 Enter Control Panel group and then Ports icon to check the port list and see if all configured ports are already added in the system correctly If no configured port shown in the port list refer to Section Troubleshooting for solutions Enter Administrative group then Event Viewer icon and then System Event Log to check for message like COM3 C102 port 1 O K for each configured port If message is Can not find the configured C102 C104 C168 CAP 0xXXXX refer to Section Troubleshooting for solutions 3 4 Driver Upgrade Removal To upgrade driver remove the installed driver first and install the new one To remove driver 1 Enter Control Panel group then select Network icon and then Adapters folder Enter Control Panel folder and then select Network icon for NT 3 51 Chapter
27. nctions under DOS Furthermore Data Scope utility is very helpful for troubleshooting and debugging the serial communications In this chapter driver installation setup loading and removal procedure are described Utility Data Scope is explained which is good for terminal emulation data scope and diagnostics Related issues such as device naming baud rate settings and programming are also stated 6 1 Driver Installation Setup Loading and Unloading MOXA DOS API 232 is a software package that assists users to develop and or debug programs for serial communications It supports device drivers for the MOXA boards such as C102 C104 C168 Family C218 C320 Series standard PC COM ports etc Driver Installation Run the installation program DOSINST EXE in the API 232 software diskette Specify the target API 232 directory e g C MOXA where software driver and library will be copied to Press F2 to start the installation 25 Chapter 6 For DOS Users Driver Setup 1 Change to API 232 directory and run the setup program BINSETUP EXE This program is to configure IRQ port number etc of the MOXA boards The configuration will be referred to by the later executed DOS driver Note that before running SETUP program execute Io irq to designate I O address and IRQ Choose C102 C104 C168 Series Multiport Board in the DRIVER SELECTION dialog and then enter or modify each port s configuration which are the port ini
28. ple for RS 485 full duplex programming is same as that for RS 232 422 programming However for RS 485 half duplex programming remember that only one signal line can be enabled when Tx and Rx of both sites are physically wired together For example C102 site Remote site TxDA TxDA RxDA _ L RxDA 37 Chapter 8 Programming When the TxDA of C102 site is enabled to transmit data the TxDA of the remote site should be disabled and RxDA of remote site should be enabled to receive data Meanwhile the RxDA of the C102 site can be either enabled to receive data from TxDA of C102 site which is call echo mode or disabled which is called non echo mode In a half duplex environment contention problems or data collision will occur if two devices attempt to transmit data simultaneously For example if the TxDA of both the C102 site and the remote site are enabled at the same time the data sent will be garbled due to the contention problems However if the TxDA of both the C102 site and the remote site are disabled the line will be floating To control the enable disable mode of the driver and receiver there are 3 options Always On By Register and By RTS for the driver Tx enable feature in Io irq and 3 options Always On By Register and By RTS for the receiver Rx enable feature in Io irq to be chosen in the Io irq board configuration software 1 Always On If the Tx enable and Rx enable por
29. plying 23 Chapter 5 Comm with Microsoft Win32 API It can ease the implementation of multi process and multi thread serial communication programs and hence greatly reduce the developing time For complete library function description and example programs for Visual C Visual Basic and Delphi please see help file and example programs in PComm directory for more details 5 3 Utilities The followings are short descriptions of each utility For details please see on line help in the diskette Diagnostic A convenient diagnostic program provides internal and external testing such as IRQ TxD RxD UART CTS RTS DTR DSR DTR DCD testing etc for the MOXA boards and ports to verify correct operation of both the software and hardware Monitor A useful port status monitoring program allows users to watch the selected MOXA COM ports data transmitting receiving throughput and communication line status which are updated and displayed on the screen at every time interval In addition users may click on one of the specific displayed port in order to see the current communication parameters and status of that port 24 The C102 is useful for industrial control as well as data acquisition and communication Because many users need to implement an industrial control system or data acquisition system in the DOS environment but DOS did not have any better communication API thus Moxa has developed device drivers and library fu
30. port independently or not Interrupt Vector Enter the interrupt vector I O address for all ports I O address for interrupt vector is from 00000H to OFFFFH Interrupt vector is one byte of I O address in which each bit is used to indicate the occurrence of interrupt for corresponding port To use interrupt vector type in the hardware Interrupt vector I O address If not using interrupt vector type 0 or leave blank as the interrupt vector There are two modes for the C102 driver One is using interrupt vector the 10 Installation Chapter 2 other is not using interrupt vector Driver employing interrupt vector scheme is supposed to have better performance than employing polling scheme Tx enable To control the enable disable mode of the driver there are 3 options Always On By Register and By RTS for the driver The setting should be correlated with setting of receiver See later description for details Rx enable To control the enable disable mode of the receiver there are 2 options Always On By Register and By RTS for the receiver For RS 422 communications set Tx Rx to Always On Always On and use point to point full duplex operation See Chapter 6 Operations for details For RS 485 communications there are several setting combinations for Tx and Rx See Chapter 6 Operations for details 1 Point to point full duplex operation Set Tx Rx to Always On Always On 2 Point to point half
31. ports of the board Duplication of the port numbers is not allowed For example if 2 ports are configured and the starting port number is 1 then the mapping of serial port numbers will be as depicted 28 For DOS Users Chapter 6 e E 4 2 IM TI LT C102 Family 6 3 Baud Rate Settings Be aware that for those C102 H Series boards configured as High Speed Spectrum the real working speed is equal to 8 times of the displayed speed For example a port if set to Normal Speed Spectrum with 38 4 Kbps will work at 38 4 Kbps for sure while a port if set to High Speed Spectrum with shown speed 38 4 Kbps will actually work at 307 2 Kbps 38 4 Kbps 8 This is applicable to Moxa provided driver and utility such as Setup and Data Scope and also any non Moxa provided driver and utility such as Telix 6 4 DOS API 232 Library and Programming For DOS programming API 232 includes powerful libraries supporting languages like Microsoft C Turbo C Macro Assembly QuickBasic Turbo Pascal Clipper etc Sample programs for each supported language are included and placed in the sub directory EXAMPLE anguage of the API 232 directory In addition for DOS C language only there are also Modem Control and File Transfer library available supporting Hayes compatible modem control as well as ASCH KERMIT XMODEM YMODEM and ZMODEM file transfer protocol functions 29 Ch
32. rds of C102 C104 C168 Family can be installed together as long as the IRQ and I O port resources are sufficient and available in a system Unless the system restarted the latest configuration will not take effect 4 3 Board Initialization Status Checking All the error conditions during the initialization of Windows 95 will be popped up onto the screen Otherwise everything should be fine If message like Can not find the configured C102 C104 C168 CAP OxXXXX or The C102 C104 C168 s software and hardware configuration mismatch CAPZOxXXXX shows refer to Section Troubleshooting for solutions 4 4 Driver Upgrade Removal To upgrade the driver simply install the driver again 20 For Windows 95 Users Chapter 4 To remove driver just remove all the configured boards Once the MOXA driver is installed it exists permanently in Windows 95 like other adapters do Removing changes nothing but that particular board s existence in Windows 95 Registry 4 5 Baud Rate Settings When C102 H Series board is configured as High Speed Spectrum any port driven by the Moxa provided driver will display the exact working speed For example the displayed speed 38 4 Kbps is equal to the working speed 38 4 Kbps However if the port is driven by non Moxa provided driver such as standard serial driver the real working speed is equal to 8 times of the displayed speed For example a port if set to Normal Speed Spectrum with 38
33. ress for interrupt vector from 00000H to OFFFFH To use INT vector type in the hardware INT vector I O address If not using INT vector type 0 or leave blank as the INT vector There are two modes for the C102 driver One is using INT vector the other is not using INT vector INT vector is one byte of I O address in which each bit is used to indicate the occurrence of interrupt for corresponding port Driver employing INT vector scheme is supposed to have better performance than employing polling scheme Sequential Port Mapping For I O Address specify the I O address of the first port and subsequent ports are set to continuous I O addresses by the offset of 8 bytes For instance if the first port is set to Ox180 then the second port is set to 0x188 sequentially For COM number specify the COM number of the first port and subsequent ports are mapped to continuous COM numbers For instance if the first port is mapped to COMIO then the second port is mapped to COM11 sequentially For receive FIFO trigger level bytes every port will have the same trigger level as set For 16550 compatible type of UART receive FIFO trigger level is 1 4 8 or 14 bytes For 16450 compatible UART only one byte is available no matter what you set Non sequential Port Mapping For I O Address set the I O address of each port independently For COM number set the COM number of each port independently For receive FIFO trigger level bytes set the trigger
34. rk Adapter Card for NT 3 51 4 Specify the exact path for the driver diskette e g AAWINDOWS NT Click Continue OK 5 Select MOXA C102 C104 C168 Family Adapter in Select OEM Option dialog Click OK to start installation For Windows NT Users Chapter 3 6 When MOXA C102 C104 C168 Configuration Panel is popped up to configure the board s and ports please refer to the Section Board and Port Configuration for more details 7 Select OK for Network Settings dialog Restart system as prompted 3 2 Board and Port Configuration The following is the procedure for configuring the C102 Family driver under Windows NT 4 0 or NT 3 51 1 Enter Control Panel group then select Network icon and then Adapters folder Enter Control Panel folder and then select Network icon for NT 3 51 2 Select MOXA C102 C104 C168 Adapter item for Installed Adapter Cards then Configure Properties button to start the MOXA C102 C104 C168 Family Configuration Panel dialog When the configuration panel is popped up Click Add button to add a board Click Remove button to remove a board Click Properties button to set up a board with correct Board Type IRQ INT Vector I O Address COM Number and Received FIFO Trigger Level where the possible parameters are as follows Board Type C102 Family Chapter 3 For Windows NT Users IRQ No 2 3 4 5 7 10 11 12 15 INT Vector I O add
35. s not using INT vector INT vector is one byte of I O address in which each bit is used to indicate the occurrence of interrupt for corresponding port Driver employing INT vector scheme is supposed to have better performance than employing polling scheme Sequential Port Mapping For I O Address specify the I O address of the first port and subsequent ports are set to continuous I O addresses by the offset of 8 bytes For instance if the first port is set to 0x180 then the second port is set to 0x188 sequentially For COM number specify the COM number of the first port and subsequent ports are mapped to continuous COM numbers For instance if the first port is mapped to COMIO then the second port is mapped 19 Chapter 4 For Windows 95 Users to COM11 sequentially For receive FIFO trigger level bytes every port will have the same trigger level as set For 16550 compatible type of UART receive FIFO trigger level is 1 4 8 or 14 bytes For 16450 compatible UART only one byte is available no matter what you set Non sequential Port Mapping For I O Address set the I O address of each port independently For COM number set the COM number of each port independently For receive FIFO trigger level bytes set the trigger level of each port independently For 16550 compatible type of UART receive FIFO trigger level is 1 4 8 or 14 bytes For 16450 compatible UART only one byte is available no matter what you set At most 4 boa
36. t Overlapped or duplicated I O address is not allowed The IRQ number of each port Several ports may share one common IRQ The transmit output buffer reserved for the port The receive input buffer reserved for the port Having completed the setup load the TSR driver BINSER DRV EXE at the DOS prompt The driver will detect the multiport board automatically If the board s is are detected a message similar to below will show Universal 2 4 8 Serial Port Communication Driver Ver x x Device Driver Setup O K Which means the board and the driver have been successfully installed At this point user is ready to execute application that supports API 232 functions or 27 Chapter 6 For DOS Users start developing applications If there is no matched port the screen will show a message like Universal 2 4 8 Serial Port Communication Driver Ver x x No Serial Port Found Please refer to Appendix A Troubleshooting for possible reasons and solutions To support various types of UARTs such as 16450 16550 and TI550C several options for SER DRV are provided Type SER DRV to see the available options Driver Unloading To remove the driver from memory type SER DRV Q at the DOS prompt 6 2 MOXA Serial Port Naming Convention Each MOXA serial port are referenced as port number in terms of programming The port numbers are automatically assigned once the starting port number is decided by user when configuring the
37. t features are set to Always On in the Io irq board configuration software the driver receiver is always enabled and ready for transmitting receiving data 2 By Register If the Tx enable or Rx enable port feature is set to By Register in the Io irq board configuration software the driver or receiver is controlled by bit 1 or bit 0 of the control register BASE 7 where BASE is the base I O address of the UART for the port When the corresponding bit is set to 1 the driver receiver is enabled Setting the corresponding bit to 0 will turn the driver receiver off and the 16x50 UART chip will not transmit receive any signal That is driver and receiver are controlled independently By Register is only suitable for any system that allows register control 38 Programming Chapter 8 ie direct I O access from application programs such as DOS For example in Turbo C language under DOS system a statement as following will turn on the driver outportb BASE 7 1 turn on driver and turn receiver off A statement as following will turn on the receiver outportb BASE 7 2 turn on receiver and turn off driver A statement as following will turn off both the driver and receiver outportb BASE 7 0 turn off both driver and receiver A statement as following will turn on both the driver and the receiver outportb BASE 7 3 turn on both driver and receiver For systems where direct ac
38. tial value when driver is loaded Use F8 function to load the on board configuration for C102 Family Use other functions to modify settings if necessary Finally remember to use F10 function to save the configuration Some noticeable functions keys and fields are explained below Press F1 Help to learn an up to date instructions Press F3 Add port to add one port entry and modify the settings if necessary Press F4 Delete port to delete the port entry where the cursor stops Press F5 Group edit to set the selected ports as a group to the same settings Press F6 INT vector to specify the interrupt vector I O address and set the status for each port Interrupt driven scheme is applied for those ports using interrupt vector while polling scheme for those ports not using interrupt vector The former is more efficient and 26 For DOS Users Chapter 6 has better performance in terms of driver Press F8 Load config to load the hardware configuration stored in the on board EEPROM at CAP address This is the most convenient way of C102 C104 C168 Family configuration comparing to add port one by one with function F3 Port number Base I O address Interrupt number TxD buffer size RxD buffer size Driver Loading This is actually the port ID of each port The application software will refer to the port by its port number ID Duplicated port number is not allowed The I O address of each por
39. us It is our commitment to support more operating systems Please call Moxa dealer distributor or visit the MOXA Web site for more information about newly available device drivers 1 2 C102 Family The family consists of members as follows C102P 2 port RS 422 RS 485 16550 UART C102H 2 port RS 422 RS 485 high speed TI550C UART C102HI 2 port RS 422 RS 485 isolation protection TI550C C102HIS 2 port RS 422 RS 485 isolation surge protection TI550C Features Custom designed ASIC compact board size half size No switch no jumper easily configured by software Independent I O address IRQ setting for each of 2 serial ports Supports two independent RS 422 RS 485 serial ports COM1 COM2 COM3 COM4 compatible E lt lt lt Chapter 1 Introduction lt 16 bit AT bus architecture more IRQs supported High speed TI550C UARTS with on chip hardware flow control no data loss C102H C102HI C102HIS v Supports DOS Windows NT Windows 95 device drivers v 2 wire or 4 wire operation v Surge protection C102HIS v Opto isolation C102HI C102HIS Specifications v Businterface ISA EISA compatible v Number of ports 2 v I O address 0x0000 OxFFFF v IRQ 2 3 4 5 7 10 11 12 15 v Data bits 5 6 7 8 v Stop bits 1 1 5 2 v Parity none even odd space mark v UART 2 46550 C102P 2 FI550C C102H C102HI C102HIS v Speed bps 50 115 2K C102P 50 921 6K C102H C102HI C102HIS v Connectors
40. word your_email_address World Wide Web WWW for product info address www moxa com or WWW moxa com tw Chapter 1 1 1 1 2 Chanter 2 2 1 Chapter 3 3 1 3 2 3 3 3 4 3 5 3 6 3 7 Chanter 4 4 1 4 2 4 3 4 4 4 5 Table of Contenisem Qu IiroSUCTON creer 1 ONE RA AA E E 1 LIPSII 3 Installation ee 7 Hardware Configuration Io irq exe ssss 7 For Windows NT Users o oo eens 15 Software Installation erecti Leetaru petiit ae 13 Board and Port Configuration esses 14 Board Initialization Status Checking 16 Driver Upgrade Removal visicsiecesicptvosesectecnosesvessssetiancseenes 16 Baud Rate Settings suce trea eere ar tertia etre ba Pepeusiu ides 17 MOXA Serial Comm Tool amp Comm ses 17 Troubl shootng oie recette edid Dao pU Da due 17 For Windows 95 Users 19 Driver Installation Setup95 exe esses 19 Board and Port Configuration eese 19 Board Initialization Status Checking 21 Driver Upgrade Removal eene 22 Baud Rate Settings cesetcsceccsusathdeadisitvncssatereotancteesesasbeenaialves 22 4 6 4 7 Chapter 5 5 1 5 2 5 3 Chapter 6 6 1 6 2 6 3 6 4 6 5 Chapter 7 7 1 7 2 Chapter 8 8 1 8 2 Appendix A Appendix B Appendix C MOXA Serial Comm Tool Comm ess
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