Samsung Protocol Frame Structure, Transmission Packet Format, Communication Timing Chart

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Ver 1.80E

1.Protocol Frame Structure

1.1 Transmission Packet Format

-Mode

 

:RS-485/RS-422 Asynchronous Communication

-Transmit Direction

:Simplex/Half duplex

-Start

bit

:1

bit

-Data

bit

:8

bits

-Parity

bit

:None

-Stop

bit

:1bit

-Baud rate

:9600 bps

1.2.Communication Timing Chart

Pic 1.Pan/Tilt Operation Timing Chart

Please note that the Preset commands send a response only at the end of their executions. The recommended minimum period of control signal communications is 70ms.

For the Pan/Tilt operation, setting up the communication period shorter than the recommendation may cause protocol loss or extend the response time of the camera.

Pic 2. Other Commands Timing Chart

Aside from Pan/Tilt, other protocols send a response at the end of their executions depending on the situation; the response time of the camera may take up to 7 seconds.

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Contents Speed Dome Camera Preface Table of Contents Protocol Frame Structure Communication Timing ChartTransmission Packet Format Description Pan/Tilt/Zoom/Focus/Brightness CommandOSD Menu Control Preset Control Product InitializationSequence Command SwingPTZ Trace Set Pan/Tilt Position Move 1Relative MovementSet Pan/Tilt Position Move 2Relative Movement Special Command ETXVer 1.80E Ver 1.80E Send14 Bytes 26h Return Error New ProtocolVer 1.80E Protocol Samples OSD onAppendix SCP-3120 Digital Zoom Parameter