1INTERFACE SPECIFICATIONS

RS-485 specifications

Data format

Mode

Asynchronous

 

 

Character length

8 bits

 

 

Data transmission speed

2400, 4800, 9600, 19200 bps

 

 

Parity check

None

 

 

Stop bit

1 bit

 

 

Communication protocol

A proprietary Sanyo protocol (SSP: Security Serial Protocol) is used. Use of a special controller for operation is recommended. To obtain this controller, contact a Sanyo service center.

RS-485 termination switch settings

Termination settings

When connecting multiple devices, you must make termination settings on both end devices.

zSet the RS-485 termination switch of both end devices to ON.

zBe sure to set the RS-485 termination switches of all devices in between (devices other than the first and last devices) to OFF.

zIf you don’t make the correct termination settings, the incorrect data will be transmitted to each device.

Example

System controller

ON Termination switch

OFF

Digital video recorder

ON RS485 termination

OFF

Time – lapse VCR

ON Termination switch

OFF

English

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Sanyo DSR-3506P manual Interface Specifications, RS-485 specifications, RS-485 termination switch settings