Panasonic AFPX-C30R User Manual page 133

1-channel RS485/RS422 Type (Product No.: AFPX-COM3)
This communication cassette is a 1-channel unit with an isolated two-wire RS485/four-wire RS422 port.
LED indication / Terminal layout
Computer link
General-purpose serial communication
PC(PLC) link
MODBUS RTU
Note) When using this cassette, the data is always transmitted by the STOP bit2 regardless the setting
of stop bit. The data can be received by either STOP bit 1 or 2 regardless the setting of stop bit.
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Name
Pin
name
RS485
Transmission
S+
line (+)
Transmission
S-
line (-)
−
R+
−
R-
−
Cassette backside switch
SW1
Change the switch at the back of the cassette
depending on the state of the communication.
1:1 communication
-
-
Available
-
Signal
direction
RS422
Send
−
Data (+)
Send
−
Data (-)
Receive
−
Data (+)
Receive
−
Data (-)
− −
RS485
1
2 ON
3
4 ON for terminal unit
1:N communication
Available
Available
Note)
Available
Port
COM1
port
RS422
OFF