Advertisement
6.Computer Link (RS485) interface
(1)Computer Link (RS485) signal name and pin assignment
1
2
3
4
5
6
(2)Computer Link (RS485) interface connection
TXD
RXD
SG
RS232C/RS485
Multi-drop adapter
Short between RXA(Pin No.3) and TRM(Pin No.4) for termination of one-to-one configuration
at CU111. Refer to the next page.
Note
¬ Use the shielded twisted-paired cable for noise immunity and ground the cable shield at
one end.
- Connect SG (Signal Ground) each other.
® The adapter does not have the frame ground (FG) terminal, so please ground directly.
¯ Please make the program transmitting again.
Pin No. Signal Name
TXA
1
2
TXB
3
RXA
4
TRM
5
RXB
6
SG
Sheilded
twisted-paired cable
TXA
1
TXB
2
RXA
3
4
TRM
R
5
RXB
6
CU111
TXA
CU111 RS485 (In phase signal)
TXB
CU111 RS485 (Reverse signal)
RXA
CU111 RS485 (In phase signal)
TRM
Termination
RXB
CU111 RS485 (Reverse signal)
SG
Signal Ground
RXA
RXB
TXA
TXB
RS485 Interface
6
CU111 connection
Function
RXD
TXD
SG
Host Equipment
Advertisement
