Panasonic WV-CLR920A User Manual download pdf (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

)

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

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 49 50

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Panasonic WV-CLR920A User Manual Page 16

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