Connect Tech Xtreme/104 Opto User Manual - page 22
Xtreme/104 Opto User’s Manual, Connect Tech Inc.
Revision 0.05
22
Figure 11: Line bias and termination jumper setting example
In this example, Port 1 is set for half duplex RS-422/485, terminated and
biased on CTS ± and RxD ±.
Port 2 is set for full duplex RS-422/48, bias/termination on RTS ±, TxD ±,
CTS ±, and RxD ±.
Port 3 is set for multi-drop slave RS-422/485 and no termination.
Port 4 is set for RS-232 and therefore no termination.
JB4
JB5
JB6
JB7
A
B
C
D
E
F
G
H
I
A
B
C
D
E
F
G
H
I
A
B
C
D
E
F
G
H
I
A
B
C
D
E
F
G
H
I
PORT 1
PORT 2
PORT 3
PORT 4
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. 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
(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
If you want to terminate half duplex RS-422/485 ports, jumper position G (Rev. A
& B adapters) or positions F and G (Rev. C adapters and later) on the
corresponding jumper block.
To terminate full duplex and multi-drop slave ports, jumper positions D, E, F, G
(Rev. A & B adapters) or D, E, F, G, H, and I (Rev. C adapters and later), on the
corresponding jumper block.
For RS-232 ports do not jumper positions D, E, F, G, H, and I on the
corresponding jumper block.