Panasonic WV-CLR920A ユーザーズマニュアル
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
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.
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.
Initial factory settings are 4-line.
Notes:
• BP stands for Bit Position.
• Daisy chain connection is not available for full
• Daisy chain connection is not available for full
duplex.
Switch
Position
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.
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
• 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
Position
BP1
BP2
BP3
BP4
BP2
BP3
BP4