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

Titan/cPCI Rear I/O Opto Electrical Interface Selection

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

Jumper blocks JA, JB, JC, JD set the electrical interfaces for the individual ports. Jumpers installed across the pins at position 1 on jumper blocks JA, JB, JC, JD enable the RS-232 interface for that port, while jumpers not installed across these pins enable the RS-422/485 interface for that port. Figure 5 shows the location of jumper blocks JA, JB, JC, JD.

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’s Technical Support.

Example 1 This example shows the settings on jumper

blocks JA, JB, JC, JD of the

Rear I/O Opto so that port 2 is set for RS-232 and ports 1, 3, 4 are set for RS-422/485.

JA

JB

JC

JD

 

 

 

1

 

 

1

 

1

 

1

 

 

 

 

 

 

 

Jumper Legend

 

2

 

2

 

2

 

2

1

= RS-232/RS-422/485

 

3

 

 

3

 

3

 

3

 

select

 

 

 

 

2

= RS-422/485 half

 

4

 

 

4

 

4

 

4

 

duplex mode control

 

 

 

 

3

= RTS +/- termination

 

5

 

 

5

 

5

 

5

4

= TxD +/- termination

 

 

 

 

5

= CTS +/- termination

 

 

 

 

 

 

 

 

 

 

6

 

 

6

 

6

 

6

6

= CTS +/- termination

 

 

 

 

7

= RxD +/- termination

 

7

 

 

7

 

7

 

7

 

 

 

 

8

= RxD +/- termination

 

8

 

 

8

 

8

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

Port 1

Port 2

Port 3

Port 4

 

 

Example 2 This example shows the settings on jumper block

JA, JB, JC, JD so that ports 1 & 2 are set for

RS-422/485 and ports 3 & 4 are set for RS-232.

JA

JB

JC

 

JD

 

 

 

 

 

1

 

 

1

 

 

1

 

 

1

 

 

 

 

 

Jumper Legend

 

 

 

 

 

2

 

2

 

2

 

 

2

1

= RS-232/RS-422/485

 

3

 

3

 

 

3

 

 

3

 

select

 

 

 

 

 

2

= RS-422/485 half

 

4

 

4

 

 

4

 

 

4

 

duplex mode control

 

 

 

 

 

3

= RTS +/- termination

 

5

 

5

 

 

5

 

 

5

4

= TxD +/- termination

 

 

 

 

 

5

= CTS +/- termination

 

 

 

 

 

 

 

 

 

 

 

6

 

6

 

 

6

 

 

6

6

= CTS +/- termination

 

 

 

 

 

7

= RxD +/- termination

 

7

 

7

 

 

7

 

 

7

 

 

 

 

 

8

= RxD +/- termination

 

8

 

8

 

 

8

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Port 1

Port 2

Port 3

Port 4

 

 

Technical Note:

You can set up the RS-232 serial ports to run at up to 230.4 Kbps, but you must use good quality serial cables with lengths that do not exceed 2 meters.

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