Connect Tech Xtreme/104 Opto User Manual - page 18
Xtreme/104 Opto User’s Manual, Connect Tech Inc.
Revision 0.05
18
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.
and
show the locations of jumper blocks JB4, JB5, JB6
and JB7.
Figure 6: 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
A
B
C
D
E
F
G
H
I
A
B
C
D
E
F
G
H
I
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
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
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
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 metres.