Binary B-540-EXT-230-RS - 6.3. RS-232 Control Connections

11
6.3. RS-232 Control Connections
Bidirectional RS-232 signals are transmitted between the device transmitter and receiver over
the category cable. The transmitter may be connected to a control system, and the receiver
may be connected to an RS-232 controllable device.
RS-232 LINK
DTE
DCE
ON
SERVICE
5 3 2
HDBaseT
1 2
ON
RS-232 LINK
DTE
DCE
ON
SERVICE
5 3 2
HDBaseT
1 2
ON
RS-232 LINK
ON
SERVICE
5 3 2
HDBaseT
DTE
DCE
1 2
ON
RS-232 LINK
DTE
DCE
ON
SERVICE
5 3 2
HDBaseT
1 2
ON
A A BB
 RS-232 Control (DB-9)- See Section 6.3.1
 HDBaseT Link category - See Section 6.1
FIGURE 9: RS-232 Connections
6.3.1. RS-232 Control (DB-9) Connection
Bidirectional RS-232 signals are transmitted between the B-540-EXT-230-RS Transmitter
and Receiver over the Cat 5e/6 cable. The transmitter may be connected to a control system
controller and the Receiver connected to an RS-232 controllable device.
PIN FUNCTION
2 RxD (Data Receive)
3 TxD (Data Transmit)
5 GND
PIN FUNCTION
2 TxD (Data Transmit)
3 RxD (Data Receive)
5 GND
235
DTE
DCE
ON
SERVICE
1 2
ON
ON
SERVICE
1 2
ON
DTE
DCE
FIGURE 10: RS-232 Modes and Connections
B-540-EXT-230-RS Transmitter
RS-232 Controllable
Device
Control
System
B-540-EXT-230-RS Receiver
DTE Mode
DTE (Down)
RS-232 DB-9 Pinouts
DCE Mode
DCE (Up)