Connect Tech Xtreme/104 Opto User Manual - page 20
Xtreme/104 Opto User’s Manual, Connect Tech Inc.
Revision 0.05
20
Figure 8: Half duplex mode jumper setting example
In the following example, Ports 1 and 2 are set for half duplex mode.
Ports 3 and 4 are RS-232 and therefore should not be set for half
duplex.
JB4
JB5
JB6
JB7
J1
Jumper is
on J1
J2
Jumper is
off J2
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
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
J1 controls ports 1 and 2 and J2 controls ports 3 and 4. If both ports 1
and 2 are set for full duplex then J1 should not be jumpered. If both
ports 3 and 4 are set for full duplex then J2 should not be jumpered.
Multi-drop 4-wire Mode
Place a jumper on position A of jumper blocks JB4, JB5, JB6, JB7 and on J1 (ports 1 and 2) or
J2 (ports3 and 4) to run the individual RS-422/485 ports in multi-drop slave mode. In this mode
the TxD line driver is enabled only when data is transmitted and RxD is enabled all the time.
This mode is typically used in multi-drop 4 wire connections.
for jumper block locations.
Figure 9: Multi-drop 4-wire mode jumper setting
In the following example, Ports 1 and 2 are set for RS-422/485 multi-
drop slave mode. Ports 3 and 4 are RS-232 and therefore should not
be set for multi-drop slave mode.
JB4
JB5
JB6
JB7
J1
Jumper is
on J1
J2
Jumper is
off J2
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
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
J1 controls ports 1 and 2 and J2 controls ports 3 and 4. If both ports 1
and 2 are set for full duplex then you should not jumper J1. If both
ports 3 and 4 are set for full duplex then you should not jumper J2.