Connect Tech JB1, JB0, JB2, JB3 user manual RS-485/422 Cable Wiring, RS-485/422 wiring diagram 4 wire

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Chapter 4: Appendices – RS-485/422 Interface

4-13

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)

Titan/cPCI adapter

RS-485 peripheral

3

TxD +

RxD +

 

 

4

TxD -

RxD -

1

RxD +

TxD +

 

 

2

RxD -

TxD -

7

RTS +

CTS +

 

 

8

CTS +

RTS +

 

 

9

RTS -

CTS -

 

 

6

CTS -

RTS -

 

 

5

SR

SR

 

 

Technical Tip

The RS-485/422 electrical interface consists of a differential signaling scheme. You should always connect the signals with twisted pairs

Titan/cPCI User’s Manual, ver. 0.00

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Contents Multi-port Serial Communications Adapters Connect Tech IncThis page is intentionally blank Limited Warranty Trademark Acknowledgment Copyright NoticeTable of Contents List of Tables List of FiguresAppendices Manual Overview IntroductionConventions & Symbols Features Product OverviewTitan/cPCI Adapters Titan/cPCI adapters Titan/cPCI Software Customer Service OverviewSystem Description Problem Description Connect Tech Product DescriptionMail/Courier Email/InternetTelephone/Facsimile RMA Overview Hardware Installation ConfigurationBaud Rate Selection Half Duplex Mode Full Duplex ModeMulti-drop Slave Mode RS-485/422 Line InterfaceInstalling the Titan/cPCI Adapter in your System This page is intentionally blank Software Installation This page is intentionally blank Appendix a Specifications Dimensions Connectors/InterfaceTitan/cPCI Part Numbers Certification Titan/cPCI-2 Titan/cPCI-4General This page is intentionally blank Connector Pinouts Appendix B Connectors/PinoutsDB-37 cable connector pinouts Function Factory Setting Appendix C Factory SettingsThis page is intentionally blank Electrical Interface Selection Appendix D RS-485/422 Line InterfaceHalf Duplex RS-485 RS-485/422 partial schematic Technical Notes RS-485/422 wiring diagram 4 wire RS-485/422 Cable WiringRS-485/422 wiring diagram 2 wire Titan/cPCI User’s Manual, ver Titan/cPCI User’s Manual, ver

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