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

Revision 1.01 23

Titan/cPCI Rear I/O Opto 2 and 4 port adapters

• The four port Rear I/O Opto requires a four port Front I/O Titan to be installed.

• The two port Rear I/O Opto requires a two port Front I/O Titan to be installed.

• In either case, when using the Titan/cPCI Rear I/O Opto, the front I/O Titan/cPCI board must be

configured for RS-485, with no bias or termination jumpers installed. (Ensure the front

Titan/cPCI is clear of all jumpers if you are installing a Titan/cPCI Rear I/O Opto.)

Jumpers JA

through JD

Description Position/Function

1 RS-232/RS-485 select In = RS-232

Out = RS-485

2 RS-485 RX tri-state control In = ½ Duplex mode (2-wire)

Out = Full or Multi-drop (4-wire) mode

3 RS-485 RTS +/-

Termination resistor

RS-485 RTS+/- Terminator resistor, 150 ohms

4 RS-485 TxD +/-

Termination resistor

RS-485 TXD+/- Terminator resistor, 150 ohms

RX485 CTS +/- Bias and

Termination network

RS-485 CTS+/- Bias and termination. Both jumpers

must be installed at the same time.

6 RX485 CTS +/- Bias and

Termination network

RS-485 CTS+/- Bias and termination. Both jumpers

must be installed at the same time.

7 RX485 RXD +/- Bias and

Termination network

RS-485 RXD+/- Bias and termination. Both

jumpers must be installed at the same time.

8 RX485 RXD +/- Bias and

Termination network

RS-485 RXD+/- Bias and termination. Both

jumpers must be installed at the same time.

Table 4: Titan/cPCI Rear I/O Opto jumper descriptions

Note for Rear I/O Opto users:

All jumpers must be removed from the Front I/O Titan/cPCI when using

the Titan Rear I/O Opto.

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Connect Tech JB0 Manual de usuario Pagina 28