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Xtreme/104 Opto User Manual

CTIM-00007 (0.10) 3/21/2012 www.connecttech.com 20

800-426-8979 | 519-836-1291

RS-232/RS-422/485 Interfaces

Electrical Interface Selection

The Xtreme/104 Opto adapter provides jumper selectable RS-232 and RS-422/485

electrical interfaces on each port. Jumper blocks JB4, JB5, JB6 and JB7 set the electrical

interfaces for the individual ports 1, 2, 3 and 4 respectively. To set a port to the RS-232

interface, install a jumper across the B position of the corresponding jumper block. If no

jumper is installed, the port will default to the RS-422/485 interface. Figure 1 and Figure 2

show the locations of jumper blocks JB4, JB5, JB6 and JB7.

Figure 8: Electrical Interface Jumper Settings Example

Example 1

In this example, Port 1 (JB4) is set for RS-232 and Port 2 (JB5) is set for RS-422/485.

JB4

JB5

Jumper Legend

(Rev. C & later adapters)

A = TxD control

B = RS-232/RS-422/485

select

C = RxD control

D = RTS terminator

E = TxD terminator

F = RxD terminator &

bias

G = RxD terminator &

bias

H = CTS terminator &

bias

I = CTS terminator & bias

Jumper Legend

(Rev. A & B adapters)

A = TxD control

B = RS-232/RS-422/485

select

C = RxD control

D = RTS terminator

E = TxD terminator

F = CTS terminator

G = RxD terminator

Note: Rev A & B Xtreme/104 Opto adapters do not have

positions H & I on jumper blocks, JB4, JB5, JB6, and JB7

Example 2

In this example, Ports 1 and 2 (JB4, JB5) are set for RS-422/485 and Ports 3, 4 (JB6,

JB7) are set for RS-232.

JB4

JB5

JB6

JB7

B jumpers = RS-232/RS-485 select

Note: Rev A & B Xtreme/104 Opto adapters do not have

positions H & I on jumper blocks, JB4, JB5, JB6, and JB7

Jumper Legend

(Rev. C & later adapters)

A = TxD control

B = RS-232/RS-422/485 select

C = RxD control

D = RTS terminator

E = TxD terminator

F = RxD terminator & bias

G = RxD terminator & bias

H = CTS terminator & bias

I = CTS terminator & bias

Jumper Legend

(Rev. A & B adapters)

A = TxD control

B = RS-232/RS-422/485 select

C = RxD control

D = RTS terminator

E = TxD terminator

F = CTS terminator

G = RxD terminator

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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