Panasonic WV-CLR920A - Manual (Page 16)

RS-485 Setting
Follow the procedures as below.
1. Slide the panel to the left until it locks.
2. Set RS-485 Termination Switch to RS485 LINE
TERM for the furthermost camera from the RS232C/
RS485 converter and Hi-Z for the other camera.
Initial factory setting is RS485 LINE TERM.
3. Select protocol by sliding triple full duplex/half
duplex selection switches simultaneously.
Initial factory settings are 4-line.
Notes:
• BP stands for Bit Position.
• Daisy chain connection is not available for full
duplex.
Switch
Position
-16-
● Internal Diagram
T (B)
T (A)
R (B)
R (A)
GND
T (B)
T (A)
R (B)
R (A)
GND
Data Transmission
Data Reception
Data Transmission
Data Reception
RS485 Terminal
Control data is transmitted and received to and from
other peripherals.
Notes:
• Shielded, two twisted pairs cable
• Low impedance
• Wire gauge size is thicker than AWG#22
(0.33 mm 2 )
<Half duplex>
<Full duplex>
RS-485 Termination Switch (BP 1) Function
RS485 LINE TERM Termination ON
Hi-Z Hi-Z
BP 2 BP 3 BP 4 Function
Right Right Right Half duplex (2-line)
Left Left Left Full duplex (4-line)
Switch
Position
BP1
BP2
BP3
BP4