e00_VDH_M814.book Page 68 Thursday, October 28, 2004 9:59 AM

2. RS-485 SPECIFICATIONS

Data format

Mode

Asynchronous

Character length

8 bits

 

 

Data transmission

2400, 4800, 9600, 19200 bps

speed

 

 

 

Parity check

None

 

 

Stop bit

1

 

 

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 your local dealer or a Sanyo service center.

RS-485 termination switch settingsTermination 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.

Example

Time-lapse VCR

ON Termination switch

OFF

Digital video recorder

ON RS-485

TERMINATE

OFF

Time-lapse VCR

ON

Termination

APPENDIX

If you don’t make the correct termination settings, data will be distorted and will affect other data, making the data transmitted to each device incorrect.

OFF

switch

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