Connect Tech Titan/cPCI 用户手册

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

Revision 1.01

Appendix D: RS-422/485 Line Interface

Titan/cPCI adapters Electrical Interface Selection

The Titan/cPCI adapter provides jumper selectable RS-232 and RS-422/485 electrical interfaces
on each port.

Jumper block JB sets the electrical interfaces for the individual ports. Jumpers installed across
the pins on jumper block JB enable the RS-232 interface for that port, while jumpers not
installed across pins enable the RS-422/485 interface for that port.

Figure 1

shows the location

of jumper block JB.

Technical Tip
Please refer to the README files on the driver diskettes for technical
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-422/485.

Jumper Legend
Jumpers on = RS-232
enabled

Port 1

Port 2

Port 3

Port 4

4 port models only

JB0

JB1

JB2

JB3

Example 2

This example shows the settings on jumper block
JB so that ports 1 & 2 are set for RS-422/485
and ports 3 & 4 are set for RS-232.