Connect Tech Titan/cPCI Figure 9:, RS-422/485Cable Wiring

Titan/cPCI User’s Manual, Connect Tech Inc.

RS-422/485 Cable Wiring

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

Figure 8 depicts a 4 wire cabling scheme between a port on the Titan/cPCI adapter to a port on the RS-422/485 peripheral.

Figure 9: RS-422/485 wiring diagram (4 wire)

Titan/cPCI adapter

3		TxD +
3		TxD -
4		TxD -
4
1		RxD +
1
2		RxD -
2
7		RTS +
8		CTS +
8		RTS -
9		RTS -
6		CTS -
6		SR
5		SR
5

RS-485 peripheral

RxD +

RxD -

TxD +

TxD -

CTS +

RTS +

CTS -

RTS -

Technical Tip

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

Revision 1.01

Contents

Tel: Email: sales@connecttech.com support@connecttech.com URL: Limited Lifetime Warranty Copyright Notice Trademark Acknowledgment Certification Statements Table of Contents Appendix A: Specifications Appendix C: Factory Settings Appendix D: RS-422/485Line Interface List of Tables List of Figures Introduction Customer Support Overview Contact Information Mail/Courier Email/Internet Note: Titan/cPCI Installation Overview Hardware Installation Figure 1: Titan/cPCI two and four port adapters Figure 2: Titan/cPCI Model TN004 for compatibility with 64 bit systems Figure 3: Titan/cPCI TN003 Adapter with LEDs Figure 4: Titan/cPCI Rear I/O two and four port adapters Figure 5: Titan/cPCI Rear I/O Opto two and four port adapters Figure 6: 10-portconfiguration using Front and Rear I/O Titan/cPCI Software Software Installation Installing the Titan/cPCI adapter in your system Titan/cPCI and Rear I/O adapters Configuring the Titan/cPCI Baud Rate Selection RS-422/485Line Interface Full Duplex Mode Appendix D: Software Installation Appendix A: Specifications Surge Suppression Optical Isolation Titan/cPCI Rear I/O Opto (2 & 4 port models): Dimensions Connectors/Interface Appendix B: Connectors/Pinouts Table 2: DB-37cable connector pinouts Table 3: Appendix C: Factory Settings Titan/cPCI Rear I/O Opto adapters Appendix D: RS-422/485Line Interface Full Duplex Mode (4 wire) not installing Half Duplex RS-422/485(2 wire) Multi-dropSlave Mode (4 wire) Figure 7: RS-422/485Partial Schematic Technical Notes: Titan/cPCI Rear I/O Opto 2 and 4 port adapters no bias or termination jumpers clear of all jumpers Jumpers JA Description Titan/cPCI Rear I/O Opto Electrical Interface Selection Full Duplex Mode (4 wire) Half Duplex RS-422/485(2 wire) Multi-dropSlave Mode (4 wire) Figure 8: RS-422/485partial schematic for Rear I/O Opto Figure 8: Page RS-422/485Cable Wiring Figure 9: Figure 10: