Moxa technologies Industio c114hi User manual

C114HI

3 in 1 RS-232/422/485

Industrial Serial Board

Apr. 1998 (2nd Edition)

Copyright Notice

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 parties 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.

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Table of Contents

Chapter 1 Introduction .........................................................................................1

1.1 Features................................................................................................2

1.2 Specifications.......................................................................................2

1.3 Check List............................................................................................3

1.4 Installation Guide.................................................................................3

Chapter 2 Hardware Installation and IO-IRQ.........................................................5

2.1 IO-IRQ Configuration Utility ..............................................................5

2.2 Jumper Settings for Interface...............................................................7

2.3 C114HI Board Installation...................................................................9

Chapter 3 Software Installation .........................................................................11

3.1 Windows NT/95, DOS/Windows 3.x ................................................11

3.2 SCO UNIX/XENIX...........................................................................11

3.3 OS/2...................................................................................................12

Chapter 4 For Windows NT Users........................................................................15

4.1 Software Installation..........................................................................15

4.2 Board and Port Configuration............................................................16

4.3 Board Initialization Status Checking .................................................17

4.4 Driver Upgrade/Removal...................................................................17

4.5 Baud Rate Settings.............................................................................18

4.6 MOXA Serial Comm Tool: PComm....................................................18

4.7 Troubleshooting.................................................................................18

Chapter 5 For Windows 95 Users........................................................................21

5.1 Driver Installation - Setup95.exe.......................................................21

5.2 Board and Port Configuration............................................................21

5.3 Board Initialization Status Checking .................................................23

5.4 Driver Upgrade/Removal...................................................................23

5.5 Baud Rate Settings.............................................................................23

5.6 MOXA Serial Comm Tool: PComm....................................................23

5.7 Troubleshooting.................................................................................23

Chapter 6 PComm.................................................................................................25

6.1 Installation .........................................................................................25

6.2 Programming Library.........................................................................25

6.3 Utilities...............................................................................................25

Chapter 7 For DOS Users .....................................................................................27

7.1 Driver Installation, Setup, Loading and Unloading...........................27

7.2 MOXA Serial Port Naming Convention............................................29

7.3 Baud Rate Settings.............................................................................30

7.4 DOS API-232 Library and Programming..........................................30

7.5 Data Scope.........................................................................................31

Chapter 8 For Windows 3.x Users .......................................................................33

Chapter 9 RS-232/422/485 Programming..........................................................37

9.1 RS-232 Programming ........................................................................37

9.2 RS-422 Programming ........................................................................37

9.3 RS-485 Programming ........................................................................37

Appendix A Pinouts and Cable Wiring...................................................................41

A.1 RS-232...............................................................................................41

A.2 RS-422...............................................................................................44

A.3 RS-485...............................................................................................45

A.4 Impedance Matching and Termination Resistors...............................46

A.5 Pinouts of DB-37 Connector..............................................................48

Appendix B High Speed Operations ......................................................................49

Appendix C Troubleshooting ................................................................................51

Appendix D I/O Port Address Map .........................................................................53

1

Chapter 1 Introduction

The Smart 3 in 1 Multiport Async Solutions

The C114HI is a RS-232/RS-422/RS-458 4-port serial communication interface board.

Each port can be configured to RS-232, RS-422 or RS-458 individually. It is designed

for the system manufacturers, integrators or VARs that want to provide all high

performance, reliability and quality multiple port data communication system.

The C114HI provides a low cost, high performance solution for connecting up to 4

devices such as terminals, modems and printers to PC-based host computer. It belongs

to the C104 family and features high speed and isolation protection.

The C114HI is so flexible in configuration that they are compatible with virtually all

kinds of other manufacturer's 4 port non-intelligent boards using 16550 UART.

Operating System Support

The family is operational under most popular operating systems such as Windows NT,

Windows 95, SCO UNIX/XENIX/OpenServer, DOS, Windows 3.x, OS/2, Linux, QNX,

FreeBSD, MUMPS, PICK OS, IMS Multiuser DOS, etc. However, MOXA device

drivers for Windows NT, Windows 95, DOS, Windows 3.x and Linux are provided for

better installation, configuration and performance. In this manual, chapters for MOXA

Windows NT,Windows 95,DOS and Windows 3.x device drivers are included. For

other compatible systems not mentioned, please refer to the respective operating

system’s manual for how to install and configure the standard driver.

MOXA Serial Comm Tool

For easy application development, MOXA provides an easy-use serial communication

library under Windows NT/95 (PComm) 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 status.

Introduction l l Chapter 1

2

1.1 Features

The C114HI 4 port RS-232/422/485 board provides the following advanced

features:

u16 bit AT bus architecture, more IRQs supported

uASIC-designed, easily configured by software ( IO-IRQ/DOS )

uIndependent I/O address and IRQ settings for each of 4 serial ports

u4 high speed, up to 921.6K bps, TI550C UARTs with on-chip hardware flow

control, no data loss ( 16550 compatible )

uCompatible with PC standard ports: COM1 ~ COM4

uSupports isolation protection for RS-422/RS-485

uSupports 2-wire or 4-wire RS-485 operation modes

uSupports RS-485 auto data direction switching feature

uSupports Windows NT/95, DOS and Windows 3.x device drivers

uCompatible with most popular Operating Systems

1.2 Specifications

uBus interface :ISA(EISA compatible)

uNumber of ports : 4

uI/O address : 0x0000 ~ 0xFFFF

uIRQ :2, 3, 4, 5, 7, 10, 11, 12, 15

uData bits : 5, 6, 7, 8

uStop bits : 1, 1.5, 2

uParity : none, even, odd, space, mark

uUART : 4¡ÑTI550C

uSpeed : 50 ~ 921.6K bps

uConnectors : 4¡ÑDB-9 male (DTE)

uData signals : RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND

RS-422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, DCD, GND

RS-485: TxD+/-, RxD+/-, GND

uIsolation protection : max. 2000V for RS-422 or RS-485

uOperating temp. :0 ~ 55°C

uDimensions : 22 cm¡Ñ11.5 cm

uC114HI is compatible with various operating systems. However, Moxa supports

proprietary drivers for better performance. See the driver list below.

Chapter 1 l l Introduction

3

C114HI

Windows NT 3/C

Windows 95 3/C

Windows 3.x 3/C

DOS 3/C

Linux R/C

OS/2 C

SCO UNIX/OpenServer C

SCO XENIX C

QNX C

FreeBSD C

PICK OS C

MUMPS C

Multiuser DOS C

3: 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

1.3 Check List

Upon unpacking the C114HI package, you should find the following items included:

1. C114HI 4 port RS-232/RS-422/RS-485 board

2. This User's Manual

3. Windows NT/95 driver diskette¡Ñ1, DOS/Windows 3.x (API-232) driver

diskette¡Ñ1, PComm diskette¡Ñ1

4. 30 cm cable ( DB-37 to 4¡ÑDB-9 male connectors )

1.4 Installation Guide

To install C114HI in a system, follow the instructions of Chapter "Hardware

Installation and IO-IRQ" and then O.S. specific instruction of Chapter "Software

Installation".

Introduction l l Chapter 1

4

5

Chapter 2 Hardware Installation and IO-IRQ

2.1 IO-IRQ Configuration Utility

Before installing any driver for C114HI in the system, it is necessary to run DOS

configuration utility, IO-IRQ.EXE, to configure the ports, such as I/O address, IRQ,

Interrupt vector, etc. The utility is in the API-232 (DOS/Windows 3.x) driver

diskette. And select "C104 family" for C114HI to configure.

The C114HI uses on-board EEPROM to save the board's configuration which can

be accessed (read or written) via the Configuration Access Port (CAP). While the

JP1 jumper cap of C114HI is removed, the CAP address is always equal to the same

address of the first port. When the JP1 jumper cap is installed, the CAP address will

be forced to 0xA700.

To save time, please determine in which operating system, e.g. Windows or OS/2 or

SCO UNIX, the C114HI board will be used. In order to ease the configuration, the

commonly used I/O address and IRQ combinations supported by most popular OSs

have been collected in the IO-IRQ utility. Press "F3 - Select OS Compatibility" on

3rd level menu to bring the suggested list and choose a proper one. You can,

however, enter the I/O and IRQ manually if none of the items is suitable.

For example, if the C114HI board is to be installed under SCO UNIX system as the

primary (first) four port board, using SCO UNIX system serial driver, here is one of

the possible settings,

a. Press "F3 - Select OS Compatibility" on 3rd level menu.

b. Then choose the entry of "SCO UNIX 1 (Arnet Compatible...)" which will

designate the C114HI's I/O base address to 0x280, IRQ to 4 and interrupt

vector to 0x2C2.

Be careful not to conflict the I/O address and IRQ of the C114HI board with the

existing board's.

Hardware Installation and IO-IRQ l l Chapter 2

6

JP1

PORT 2

PORT 3

PORT 4

PORT 1

RT7RT2 RT6RT4

RT8RT1 RT5RT3

JP4

PORT 3

JP5

PORT 4

PORT 2

JP3

PORT 1

JP2

RTSON

REG

AUTO

ON

RTSOFF

REG

AUTO

ON

232

422

485

JP7

485

422

232

RTSON

REG

AUTO

ON

RTSOFF

REG

AUTO

ON

JP11

RTSON

REG

AUTO

ON

RTSOFF

REG

AUTO

ON

232

422

485

JP9

485

422

232

RTSON

REG

AUTO

ON

RTSOFF

REG

AUTO

ON

JP13

JP8JP12

JP6JP10

C114HI’s Layout

Chapter 2 l l Hardware Installation and IO-IRQ

7

2.2 Jumper Settings for Interface

Jumpers for the first and second ports are symmetric with those for the third and

forth ports as shown in the above picture.

Port 1 Port 2 Port 3 Port 4 Selection Function

JP 2 JP 3 JP 4 JP 5 Interface & RS-485 Operation Mode

JP 6 JP 8 JP 10 JP 12 RS-422/RS-485 Transmitter Mode

JP 7 JP 9 JP 11 JP 13 RS-422/RS-485 Receiver Mode

For illustration, jumper settings of the first port is shown below.

Jumper Settings for RS-232 Port

Put the jumpers in the positions as depicted. Do not care Tx (JP6) and Rx (JP7).

Jumper Settings for RS-422 Port

Put the jumpers in the positions exactly as depicted.

JP7 (Rx)

JP2

JP6 (Tx)

232

422

485

RTS ON

REG

AUTO

ON

RTS OFF

REG

AUTO

ON

AAAA

Hardware Installation and IO-IRQ l l Chapter 2

8

Tx: ON

Rx: ON

Jumper Settings for RS-485 Port

There are many combinations of configuration for RS-485. To control the

enable/disable mode of the transmitter and receiver, there are 3 options: "RTS ON",

"REG" and "AUTO" for the transmitter (jumpers for Tx) and 3 options: "RTS OFF",

"REG" and "AUTO" for the receiver (jumpers for Rx) Please decide which you need

and put the jumpers in positions as depicted.

Full Duplex Operation Mode

Tx: RTS ON Tx: REG

Rx: RTS OFF Rx: REG

RTS ON

REG

AUTO

ON

RTS OFF

REG

AUTO

ON

AAAA

RTS ON

REG

AUTO

ON

RTS OFF

REG

AUTO

ON

AAAA

RTS ON

REG

AUTO

ON

RTS OFF

REG

AUTO

ON

AAAA

Chapter 2 l l Hardware Installation and IO-IRQ

9

Half Duplex Operation Mode

Tx: RTS ON Tx: REG Tx: AUTO

Rx: RTS OFF Rx: REG Rx: AUTO

Please also refer to Chapter 9 for RS-485 programming and Appendix A.3 for RS-

485 cable wiring.

2.3 C114HI Board Installation

To install C114HI, please follow the steps below.

Step 1. Choose a PC installed with DOS system or prepare a MS-DOS boot disk

for your PC.

Step 2. Power off PC.

Step 3. Set the interface type to RS-232, RS-422 or RS-485 for each port with the

jumpers on board.

Step 4. Install the C114HI board into a 16-bit slot.

The C114HI has the following default (factory) settings,

I/O address :0x180 (1st port), 0x188 (2nd port)

0x190 (3rd port), 0x198 (4th port)

IRQ :10 (shared by four ports)

Interrupt vector :0x1C0

Configuration Access Port (CAP) :0x180

RTS ON

REG

AUTO

ON

RTS OFF

REG

AUTO

ON

AAAA

RTS ON

REG

AUTO

ON

RTS OFF

REG

AUTO

ON

AAAA

RTS ON

REG

AUTO

ON

RTS OFF

REG

AUTO

ON

Hardware Installation and IO-IRQ l l Chapter 2

10

If you are going to install multiple C114HI boards, configure one board at

a time to prevent hardware conflict. Make sure no existing devices have

the same I/O address as the CAP address, e.g. 0x180. If so, try to avoid

the conflict by doing either one of the following (a or b).

a. Short the jumper at position JP1 on the upper-left corner of C114HI.

This will force the CAP address to 0xA700.

b. Change or disable the existing board's I/O address.

ATTENTION ! For safety and to prevent C114HI from damage,

please don’t attempt to install or remove the jumper cap of JP1 until

the power of PC is off.

Step 5. Power on the PC and enter DOS system.

Step 6. Execute IO-IRQ.EXE included in the API-232 software driver diskette

and follow the on-line help to configure the C114HI which belongs to the

C104 family.

Step 7. Do software installation described in Chapter 3. After completing both

the hardware and software configurations, the board is ready for use.

Remember to connect the DB-37 to 4¡ÑDB-9 cable.

11

Chapter 3 Software Installation

The C114HI boards are compatible with various operating systems such as SCO

UNIX/XENIX, OS/2, QNX, PICK OS, MUMPS, Linux, and IMS Multiuser DOS.

Please refer to the relative operating system's manual for how to configure the board.

The C114HI boards support Windows NT, Windows 95, DOS and Windows 3.x device

drivers. The compatible SCO UNIX/XENIX and OS/2 drivers are also described in this

Chapter.

3.1 Windows NT/95, DOS/Windows 3.x

Please refer to Chapter "For Windows NT Users" or "For Windows 95 Users", "For

DOS Users" or "For Windows 3.x Users" for more details.

3.2 SCO UNIX/XENIX

Because the SCO UNIX/XENIX has bundled a 4 port board driver, additional driver

is not necessary. The following description is based on the SCOUNIX/XENIX

driver. Under SCO UNIX/XENIX, if the C114HI is used as the first 4 port board,

one possible configuration would be:

IRQ = 4 (i.e. COM1)

I/O base address = 0x280 (Arnet compatible)

Vector = 0x2C2 (0x280 + offset 0x42)

For second 4 port board, the C114HI can be configured as:

IRQ = 3 (i.e. COM2)

I/O base address = 0x300 (Arnet compatible)

Vector = 0x342

Use the following SCO UNIX/XENIX command to start the software installation of

a new serial board:

# mkdev serial

Software Installation l l Chapter 3

12

The screen will show:

You would like to install a:

1. 1 port card

2. 2 port card

3. 4 port card

4. ......

Enter number 3 to choose "4 port card". The screen then shows:

The card is configured as:

1. COM1

2. COM2

3. COM3

4. COM4

For first C114HI 4 port board, choose number 1 (COM1); for second, number 2

(COM2). Then the screen shows like:

Which card do you have?

1. Arnet base address 0xaaa

2. Arnet base address 0xbbb

3. Hostess base address 0xccc

4. ......

For first C114HI 4 port board, select "Arnet base address 0x280"; for second,

"Arnet base address 0x300". Follow the on-line instruction to complete the rest of

the installation procedure.

Once the installation is successfully completed, the following serial devices along

with their modem devices (upper-case) will be added to the system.

tty1a tty1b tty1c tty1d (first C114HI)

tty2a tty2b tty2c tty2d (second C114HI)

Be sure to activate the device by using SCO command:

# enable ttyxx

3.3 OS/2

The C114HI can be driven either by the default device driver accompanying with

Chapter 3l l Software Installation

13

OS/2 or by the COM.SYS device driver provided by Device Driver Source Kit for

OS/2.

COM.SYS Default Device Driver

The default device driver can only apply to standard COM1 and COM2 ports. It is

active when the system is booted up. Please configure the first and second ports of

the C114HI as COM1 (3F8, IRQ4) and COM2 (2F8H, IRQ3), respectively.

Interrupt vector is not used. Remember to disable the COM1/COM2 on the host if

exist.

COM.SYS Device Driver from Device Driver Source Kit for OS/2

The COM.SYS device driver can support up to 4 COM ports with user-defined I/O

port addresses and interrupt levels. To enable it, a line describing C114HI's

configuration (same as configured in IO-IRQ program) should be added to file

C:\CONFIG.SYS and then reboot the system again.

Syntax:

DEVICE=PATH\COM.SYS (COM#, PORT@, IRQ#, BADINT, FIFO) ...

Where

PATH : the path of the device driver COM.SYS

COM# : the com port number (1~4)

PORT@ : the port's base I/O address

IRQ# : the IRQ level to use for the port, no IRQ sharing.

BADINT : what to do for bad interrupt i (ignore), d (disable port), p (post to application).

FIFO : if this is a FIFO port or not (t or f)

Example:

DEVICE= C:\COM.SYS (1, 3F8, 4, d, t) (2, 2F8, 3, d, t) (3, 2C0, 5, d, t) (4, 2C8, 7, d, t)

Software Installation l l Chapter 3

14

Moxa Technologies Industio C114HI User manual

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