Use Of Rs485 Communication Function - Panasonic WV-CLR930 Manual Del Usuario

Use of RS485 communication function

The following explains the connections and settings of the RS485 terminal switch and 2-wire/4-
wire selection switch when the RS485 communication function is used.
RS485 terminal
<4-wire communication>
Data reception
Data transmission
<2-wire communication>
Data reception
Data transmission
GND 1
A
2
R
RS B
3
485
A
4
T
B
5
Note:
• For the twisted-pair cable, use a shielded AWG22 (0.33 mm
impedance cable.
GND
R (A)
R (B)
T (A)
T (B)
GND
R (A)
R (B)
T (A)
T (B)
1
2
3
4
5
2
) or larger cable with low
19