No. 20S071-01
STC-HD213DV / STC-HD213DV-CS / STC-HD213SDI / STC-HD213SDI-CS /
STC-HD213DVN / STC-HD213DVN-CS / STC-HD213SDIN / STC-HD213SDIN-CS
Product Specifications and User
66/94
8 The Communication Protocol Specifications
8.1 The communication settings
Setting Value
Baud rate 9,600 bps / 19,200 bps / 38,400 bps (Default) / 57,600 bps / 115,200 bps
Data bit 8 bits
Parity None
Stop bit 1 bit
Flow control None
8.2 The communication format
The format for sending / receiving data between PC and camera is in below:
STX
8bits
Command
8bits
Direction
1bit
Data length
15bits
Data
[Data length] byte
(Variable)
Check sum
8bits
ETX
8bits
The details for format
Details
STX Start of Frame. This value is always “0x02”.
Command Command Code refer to "The Camera Control Command"
Direction "0": Reading or receiving data from the camera is always a "0" value.
"1": Writing or sending data to the camera is always a "1" value.
Note: This value is always "0" when camera responding.
Data length This "Data Length" value tells how many bytes "Data" will contain.
The "Data Length" must be specified in bytes.
Data This field is for set option, value and/or acquired value.
The size must be specified as "Data Length".
Check sum The "Check sum" functions to verify integrity of communication transmission.
The "Check sum" value should equal last (low) 8 bits of summary of
["Command" + "Direction" + "Data Length" + "Data"].
ETX End of Frame. This value is always "0x03".
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