Wiring Example Of Serial Port - Panasonic WHA1 Series User Manual

2.4.1 Wiring Example of Serial Port

Use a loose wire for the connection on the PLC side.
It can be used in combination with our PLC equipped with an adaptive interface.
Serial
RS-232C
communication
communication
RS-422
/485
communication
 RS-232C Communication
PLC RS-232C port

RS-422 Communication
PLC RS-422 port

RS-485 Communication
PLC RS-485 port
1:1
1:1
1:n
Fanction Signal name
Send data SD
Receive data RD
Signal ground SG
Fanction Signal name
Send data (+) SD+
Send data (-) SDー
Receive data (+) RD+
Receive data (-) RDー
Fanction Signal name
RS-485(+) +
ー
RS-485(-)
PROGRAMMABLE DISPLAY WHA1 Advanced Model
Configuration
WHA1 Advanced Model
Pin No.
1
2
3
4
5
6
7
8
WHA1 Advanced Model
Pin No.
1
2
3
4
5
6
7
8
WHA1 Advanced Model
Pin No.
1
2
3
4
5
6
7
8
5
Pin name
RX/RXD-
TX/TXD-
CTS/RXD+
RTS/TXD+
+5V output
GND
-
SHIELD
Pin name
RX/RXD-
TX/TXD-
CTS/RXD+
RTS/TXD+
+5V output
GND
-
SHIELD
Pin name
RX/RXD-
TX/TXD-
CTS/RXD+
RTS/TXD+
+5V output
GND
-
SHIELD