SC4000 REFERENCE MANUAL
5
SGND RTX485-
USER INTERFACE
SGND RTX+
RTX-
SC4000
Figure 20 - RS485 Half-duplex Connections
This interface is forced by software when the protocol selected is MUX32 communication
protocol.
In a Multiplexer layout, the Multidrop address must also be set via serial channel by the
Genius™ utility or by the Host Programming Mode.
5.3.2 Host 2 Interface
The Host 2 port can be used for full RS232/RS485 connectivity to an alternative Host
computer, It is software selectable and optoisolated.
RS232 Interface
The following pins are used for RS232 interface connections:
Pinout
Function
TX Transmit
Data
RX Receive
Data
RTS
Request To Send
CTS
Clear To Send
SGND Signal
Ground
SGND RXD CTS
TXD
RTS
USER INTERFACE
SGND TX RTS
RX
CTS
SC4000
Figure 21 – RS232 Data Source Interface Connections
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