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Chapter 4: Appendices – RS-485/422 Interface

4-13

Titan/cPCI User’s Manual, ver. 0.00

RS-485/422 Cable Wiring

You can wire Titan/cPCI adapters in various ways to
communicate with RS-485/422 peripherals. This section
describes a few examples of RS-485/422 cabling schemes.

Figure 5

describes a 4 wire cabling scheme between a port on the

Titan/cPCI adapter to a port on the RS-485/422 peripheral.

Figure 5:

RS-485/422 wiring diagram (4 wire

)

RTS +

RTS -

CTS +

CTS -

TxD +

TxD -

RxD +

RxD -

RxD +

TxD +

RxD -

TxD -

RTS -

CTS -

RTS +

CTS +

Titan/cPCI adapter

RS-485 peripheral

Technical Tip

The RS-485/422 electrical interface consists of a differential
signaling scheme.

You should always connect the signals with

twisted pairs

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Страница 1: ...munications Adapters User Manual Connect Tech Inc 42 Arrow Road Guelph Ontario N1K 1S6 Tel 519 836 1291 Toll 800 426 8979 North America only Fax 519 836 4878 Email sales connecttech com support connecttech com FTP ftp connecttech com HTTP www connecttech com CTIM 00009 Revision 0 00 September 24 2001 Part Number MAN090 ...

Страница 2: ...Titan cPCI User s Manual ver 0 00 This page is intentionally blank ...

Страница 3: ... been subjected to abuse misuse accident disaster or non Connect Tech Inc authorized modification or repair You may obtain Limited Warranty service by delivering this product to an authorized Connect Tech dealer or to Connect Tech Inc along with proof of purchase If this product is shipped you agree to insure the product or assume risk of loss or damage in transit and to prepay shipping charges to...

Страница 4: ... by copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Connect Tech Inc Copyright 2001 by Connect Tech Inc Trademark Acknowledgment Connect Tech Inc acknowledges all trademarks registered trademarks and or copyrights referred to in this document as the property of their respective owners No...

Страница 5: ...e 2 2 Full Duplex Mode 2 2 Half Duplex Mode 2 2 Multi drop Slave Mode 2 2 Line Termination 2 2 Installing the Titan cPCI Adapter in your System 2 3 Chapter 3 Software Installation Introduction 3 1 Chapter 4 Appendices Appendix A Specifications 4 1 Operating Environment 4 1 Power Requirements 4 1 CompactPCI Bus Interface 4 1 Communications 4 1 Control Signals 4 1 Surge Suppression 4 1 Dimensions 4 ...

Страница 6: ... 4 10 Line Termination 4 11 RS 485 422 Cable Wiring 4 13 List of Tables Table 1 DB 9 cable connector pinouts 4 5 Table 2 DB 37 cable connector pinouts 4 6 List of Figures Figure 1 Titan cPCI adapters 1 4 Figure 2 Titan cPCI 10 port configuration 1 5 Figure 3 Problem summary sheet 1 6 Figure 4 RS 485 422 partial schematic 4 11 Figure 5 RS 485 422 wiring diagram 4 wire 4 13 Figure 6 RS 485 422 wirin...

Страница 7: ...ll Connect Tech products Manual Overview The purpose of the Titan cPCI User s Manual is to help you install the Titan cPCI as effortlessly as possible The manual includes four main sections Introduction the section you are currently reading covers the Titan cPCI features Connect Tech s customer services and return merchandise authorization RMA policies and procedures Hardware Installation describe...

Страница 8: ...r special cases Example the Example convention outlines hardware and software installation examples Technical Tip the Technical Tip convention offers technical tips to assist you in hardware and software installation or problems WARNING The Warning convention advises you to take certain precautions in order to avoid possible damage to your Connect Tech product This message warns you that your Conn...

Страница 9: ...85 422 support in hardware The modes are as follows Full Duplex Mode Half Duplex Mode Multi drop Slave Mode 16C950 UARTs control two or four ports Each port on a Titan cPCI adapter has independent baud rate selection offering baud rates from 50 bps to 1 8342 Mbps RS 485 422 or 230 4 Kbps RS 232 with 5 6 7 or 8 data bits and 1 1 5 2 stop bits odd even mark and space parity Titan cPCI adapters come ...

Страница 10: ...onnector CompactPCI Bus Connector PCI 954 Quad UART DB9 Connector Port 2 Ejector Handle Line Termination Bias Jumper blocks JC JD Duplex Control Jumper Block JA RS 232 Select Jumper Block JB DB9 Connector Port 1 Titan cPCI 4 Adapter Rear I O Connector CompactPCI Bus Connector PCI 954 Quad UART DB37 Connector Ejector Handle Jumper blocks JC JD JE JF Duplex Control Jumper Block JA RS 232 Select Jump...

Страница 11: ...er under different operating systems see Chapter 3 Software Installation Customer Service Overview If you experience difficulties after reading the manual and using the product contact the Connect Tech reseller from which you purchased the product In most cases the reseller can help you with product installation and difficulties In the event that the reseller is unable to resolve your problem our ...

Страница 12: ...o of serial ports IRQ selected Base address selected I O port address selected Device driver Revision no System Description Operating system Revision no System type manufacturer Amount of RAM CPU type speed Video adapter Settings Network adapter Settings Hard disk adapter Settings Tape adapter Settings Other serial adapters Settings Other adapters Settings Devices connected to ports ...

Страница 13: ...rnet email address OR 2 You can refer to our knowledge database found in the Customer Support section of our World Wide Web site OR 3 You can fill out the problem summary form found in the Customer Support section of our World Wide Web site and submit it to our customer support engineers via the Web OR 4 You can obtain the latest versions of software drivers and manuals from the Customer Support s...

Страница 14: ...splay the RMA number on the external packaging 3 International customers must state on all shipping documents and packages Canadian Goods in Origin being returned for in out of warranty repair 4 Please refer to the Limited Warranty for further restrictions or requirements Note 1 Please pack the item for repair securely and ship it prepaid and insured Connect Tech is not liable for damage or loss t...

Страница 15: ...er in some cases a system BIOS cannot resolve all of the requests for resources in the system This often occurs with the assignment of system interrupts since this is usually the scarcest resource If this occurs the driver will signal that a given resource has not been assigned which requires the user to assign system resources manually After reboot determine with the BIOS setup utility what resou...

Страница 16: ...ed with this function Half Duplex Mode In this mode the TxD line driver is enabled only when data is transmitted and RxD is disabled when data is being transmitted This mode is typically used in either point to point 2 wire connections OR in multi drop 2 wire bussed connections Please refer to Appendix D RS 485 422 Line Interface for the jumper settings associated with this function Multi drop Sla...

Страница 17: ...andle it only by the edges and place it on the anti static bag or an anti static mat 1 Turn the power off to your computer 2 Remove the Titan from its packaging and remove the protective rubber from the alignment pins on the Titan s front panel 3 Insert your Titan cPCI into an available 3U slot The black handle on the front panel should be on the bottom in the lowered position 4 Push the Titan int...

Страница 18: ...Titan cPCI User s Manual ver 0 00 This page is intentionally blank ...

Страница 19: ...allation and configuration of various device drivers and software utilities If you require further information please contact Connect Tech Customer Support Before installing the Titan cPCI software device driver verify and note jumper settings described in Appendix D RS 485 422 Line Interface for Jumper block JA Full duplex half duplex and multi drop slave control Jumper block JB RS 232 RS 485 422...

Страница 20: ...Titan cPCI User s Manual ver 0 00 This page is intentionally blank ...

Страница 21: ... One 3U cPCI slot Communications UARTs 16C950 UARTs c w 128 byte TxD RxD FIFO buffers RS 232 Programmable baud rate generator up to 230 4 Kbps on all ports RS 485 422 Programmable baud rate generator up to 1 843 2 Kbps on all ports Control Signals RS 232 RTS DTR TxD DCD CTS RxD DSR RI RS 485 422 RTS TxD CTS RxD Surge Suppression TransGuard Transient Voltage Suppression able to withstand multiple s...

Страница 22: ...ts RS232 485 front I O male DB9 TN029100000 Titan 2 cPCI 2 ports RS232 485 surge suppression TN049000000 Titan 4 cPCI 4 ports RS232 485 front I O no cable TN049000001 Titan 4 cPCI 4 ports RS232 485 front I O with male DB9 cable TN049000003 Titan 4 cPCI 4 ports RS232 485 front I O with male DB25 cable TN049100000 Titan 4 cPCI 4 ports RS232 485 front I O surge suppression no cable TN049100001 Titan ...

Страница 23: ...e Electromagnetic Compatibility EMC Directive for General Immunity Compliance EN 50 0082 1 1997 EN 55022 Conducted and Radiated emissions Class A EN 61000 4 2 Electrostatic Discharge EN 61000 4 3 Radiated Immunity EN 61000 4 4 Electrical Fast Transients EN 61000 4 6 Conducted Immunity Test Level 2 Rod Doré David Worthen P Eng Manager of Engineering President General The above agency conformances w...

Страница 24: ...Titan cPCI User s Manual ver 0 00 This page is intentionally blank ...

Страница 25: ...e on your Titan cPCI adapter Table 1 DB 9 cable connector pinouts Pin No RS 232 Signal Direction RS 485 422 Signal Direction 1 DCD input RxD input 2 RxD input RxD input 3 TxD output TxD output 4 DTR output TxD output 5 SG signal ground SR signal reference 6 DSR input CTS input 7 RTS output RTS output 8 CTS input CTS input 9 RI input RTS output Male DB 9 Connector 1 5 6 9 Cable Part Number CAB04DX ...

Страница 26: ...RTS output RTS output 14 4 DSR input CTS input 15 2 SG signal gnd SR signal ref 16 2 DTR output TxD output 17 2 TxD output TxD output 18 2 RxD input RxD input 19 2 DCD input RxD input 20 1 RI input RTS output 21 1 CTS input CTS input 22 1 RTS output RTS output 23 1 DSR input CTS input 24 3 SG signal gnd SR signal ref 25 3 DTR output TxD output 26 3 TxD output TxD output 27 3 RxD input RxD input 28...

Страница 27: ...B is set for all ports RS 485 422 all positions not jumpered Half Duplex Jumper block JA is set for all ports running in full duplex or multi drop slave mode all positions not jumpered Termination Jumper blocks JC JD JE and JF are set for all ports not terminated or biased all positions not jumpered Note Please see Figure 1 for the locations of these jumper blocks ...

Страница 28: ...Titan cPCI User s Manual ver 0 00 This page is intentionally blank ...

Страница 29: ... tips or release notes concerning installation and configuration of various device drivers and software utilities If you require further information please contact Connect Tech Technical Support Example 1 This example shows the settings on jumper block JB so that port 2 is set for RS 232 and ports 1 3 4 are set for RS 485 422 JB Jumper Legend Jumpers on RS 232 enabled Port 1 Port 2 Port 3 Port 4 4...

Страница 30: ...transmitting to cause the transmit driver to disable tri stated and the receiver to enable The 16C950 UARTs on the Titan cPCI adapter are responsible for timing the DTR toggle Multi drop Slave Mode By not installing jumpers on jumper block JA and by using features in our driver software you can run the individual RS 485 422 ports in multi drop slave mode In this mode the TxD line driver is enabled...

Страница 31: ...or a partial schematic of the RS 485 422 circuit for the Titan cPCI and to Figure 1 for the locations of JC JD JE and JF Figure 4 RS 485 422 partial schematic TxD TxD RxD TxD RxD Titan cPCI RS 485 422 Line Bias Termination RxD RTS RTS CTS RTS CTS CTS PCI 954 UART 150 Ω 1 8K Ω 1 8K Ω 5 V 150 Ω 1 8K Ω 1 8K Ω 5 V 150 Ω JC5 JD5 JE5 JF5 150 Ω JC6 JD6 JE6 JF6 JC3 JD3 JE3 JF3 JC4 JD4 JE4 JF4 JC1 JD1 JE1 ...

Страница 32: ...uld not be terminated JC PORT 1 Jumper Legend 1 CTS terminator bias 2 CTS terminator bias 3 RxD terminator bias 4 RxD terminator bias 5 TxD terminator 6 RTS terminator JC1 JC2 JC3 JC4 JC5 JC6 JD PORT 2 JD1 JD2 JD3 JD4 JD5 JD6 JE PORT 3 JE1 JE2 JE3 JE4 JE5 JE6 JF PORT 4 JF1 JF2 JF3 JF4 JF5 JF6 Technical Notes 1 For full duplex and multi drop slave you can jumper positions 1 2 3 4 5 and 6 on the app...

Страница 33: ...ling schemes Figure 5 describes a 4 wire cabling scheme between a port on the Titan cPCI adapter to a port on the RS 485 422 peripheral Figure 5 RS 485 422 wiring diagram 4 wire RTS RTS CTS CTS TxD TxD RxD RxD RxD TxD RxD TxD RTS CTS RTS CTS SR SR Titan cPCI adapter RS 485 peripheral 3 4 2 5 6 9 7 8 1 Technical Tip The RS 485 422 electrical interface consists of a differential signaling scheme You...

Страница 34: ...pter to a port on the RS 485 422 peripheral Figure 6 RS 485 422 wiring diagram 2 wire RTS RTS CTS CTS TxD TxD RxD RxD RxD TxD RxD TxD RTS CTS RTS CTS SR SR Titan cPCI adapter RS 485 peripheral 3 1 4 2 5 6 9 7 8 Technical Tip The RS 485 422 electrical interface consists of a differential signaling scheme You should always connect the signals with twisted pairs ...

Страница 35: ...Titan cPCI User s Manual ver 0 00 ...

Страница 36: ...Titan cPCI User s Manual ver 0 00 ...

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