Connect Tech Titan/cPCI Figure 7: RS-422/485Partial Schematic

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

Line Termination

You can use jumper blocks JC, JD, JE and JF to terminate and bias TxD ±, RxD ±, RTS ±, and CTS ± on the individual RS-422/485 ports through jumper selectable 150 Ω fixed resistors.

Please refer to Figure 7 for a partial schematic of the RS-422/485 circuit for the Titan/cPCI and to Figure 1 for the locations of JC, JD, JE and JF.

Titan/cPCI

RS-422/485 Line Bias/Termination

			TxD +
	TxD	150 Ω	JC5, JD5, JE5, JF5
		150 Ω	JC5, JD5, JE5, JF5
			TxD -
	DTR		10K Ω
	DTR	JA0, JA1, JA2, JA3
			+5 V
			1.8K Ω
PCI 954			RxD +
PCI 954	RxD	JC3, JD3, JE3, JF3
UART	RxD		150 Ω
UART			150 Ω
		JC4, JD4, JE4, JF4
			RxD -
			1.8K Ω
			RTS +
	RTS	150 Ω	JC6, JD6, JE6, JF6
		150 Ω	JC6, JD6, JE6, JF6
			RTS -
			1.8K Ω
			CTS +
	CTS	JC1, JD1, JE1, JF1
	CTS		150 Ω
			150 Ω
		JC2, JD2, JE2, JF2
			CTS -
			1.8K Ω
			+5 V

Figure 7: RS-422/485 Partial Schematic

Note: Line bias/termination is jumper selectable

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: