Xinje XD5 - Above Extension BD Port (COM4, COM5)

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6. Above extension BD port (COM4, COM5)
The above extension port can connect BD card which contains RS232 mode (XD-NS-BD),
RS485 mode (XD-NE-BD) and optical fiber mode (XD-NO-BD).
XD series 24/32 I/O PLC can extend one BD card, XD series 48/60 I/O PLC can extend 2 BD
cards, XD series 16 I/O PLC cannot extend BD card.
(1) XD-NS-BD
(2) XD-NE-BD
XD-NE-BD has the switch to select whether it is terminal. The switch default setting is
OFF which means not install terminal resistor. If XD-NE-BD is at the head or end of the
bus, it needs to install 120Ω terminal resistor at the both side and turn on the switch
(right).
(3) XD-NO-BD
Each part name is shown as below:
Name
Function
Communication
LED
Not support this function
Wiring
terminal
TX
Signal send
RX
Signal receive
GND
Ground
●
Empty
Each part name is shown as below:
Name
Function
Communication
LED
The light is flashing when the BD
card communication is successful
Wiring
terminal
A
485+
B
485-
S
Signal ground
●
Empty
Terminal resistor
switch
To choose whether to use terminal
resistor (120Ω)
Each part name is shown as below:
Name
Function
Communication
LED
Not support this function
Wiring terminal
The left side is signal input
terminal, the right side is signal
output terminal
COM
Wiring terminal
Communication
LED
COM
A
B
COM
Communication
LED
Wiring terminal
Terminal
resistor switch
COM
Communication
LED
Wiring terminal