Extron Electronics CTL101 User Manual
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5
©2002 - INLINE, Inc.
CTL101 Operation Manual - V1.3 03/22/02
Full Duplex RS-422/485
Menu Setup: Select Full Duplex Mode for Applicable Ports
SW Bank 1 Input Port: Switch 1-3 set to 1
Output Port: Switch 4-6 set to 1
CTL101
Serial Port
Computer Serial Port
(DB-9 Connector)
TX+
TX-
RX+
RX-
GND
1
5
3
2
5
3
1
TX+
RX+
RX-
TX-
GND
GND
2
4
7
6
(A)
(A)
(A)
(A)
(B)
(B)
(B)
(B)
TX+
TX-
RX+
RX-
120 ohm
termination
120 ohm
termination
Input SW 3
Output SW 6
Input SW 2
Output SW 5
Note: In Full Duplex Mode, terminate both TX and RX lines. In Half-Duplex Mode, terminate
only one (TX or RX), they are connected together.
Half Duplex RS-485
Menu Setup: Select Half Duplex Mode for Applicable Ports
SW Bank 1 Input Port: Switch 1 & 2 = 1, 3 = 0
Output Port: Switch 4 & 5 = 1, 6 = 0
CTL101
Serial Port
Computer Serial Port
(DB-9 Connector)
TX+
TX-
RX+
RX-
GND
1
5
3
2
5
3
1
TX+
RX+
RX-
TX-
GND
GND
2
4
7
6
When using the RS-485 option you can connect multiple CTL101 units in parallel.
When multiple devices are connected only the start and end units should be terminated.
Terminate
Terminate
(A)
(A)
(B)
(B)
(A)
(A)
(B)
(B)