JVC DLA-DS1U Serial protocol for the DLA-DS1U and DLA-M2000LU/SC D-ILA project - Page 3

Outline, Communication Format, Data Format

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１．OUTLINE This document describes the communication and data formats used to control the projector via its RS-232C port. ２．COMMUNICATION FORMAT Transfer Rate : Data Length : Parity Bit : Start Bit : Flow Control : 9600, 19200(default) bps 8 bits None 1 bit None ３．DATA FORMAT 3.1 Command Data Format (External Control to Projector) Header ID SP Command SP Parameter SP Parameter SP ・・ CR Header ： Indicates the beginning of data and data type '!'(21H) ： Command for the Projector '?'(3FH) ： Query to the Projector (Request for data) ID ： Identification number of Projector SP ： Indicates the separation between ID and command, command and parameter, parameter and parameter(20H) CR ： Indicates the end of data(0DH) 3.2 Tally (Response) Data Format (Projector to External Control) 3.2.1 Tally (Response) Data when Terminated Normally Header ID SP Normal Termination Status SP Parameter SP Parameter ・・ CR Header : Indicates the beginning of tally (response) data '@'(40H) ID ： Identification number of the Projector SP ： Indicates the separation between ID and status, status and parameter, parameter and parameter(20H) Normal Termination ： '0'(30H) Status CR ： Indicates the end of data(0DH) * Parameter is sent when tally (response) data is issued in response to a query (request for data.) There is 2

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2
１．
１．
１．
１．
OUTLINE
This document describes the communication and data formats used to control the projector via
its RS-232C port.
２．
２．
２．
２．
COMMUNICATION FORMAT
Transfer Rate :
9600, 19200(default) bps
Data Length :
8 bits
Parity Bit
:
None
Start Bit
:
1 bit
Flow Control :
None
３．
３．
３．
３．
DATA FORMAT
3.1
Command Data Format (External Control to Projector)
Header
ID
SP
Command
SP
Parameter
SP
Parameter
SP
・・
CR
Header
：
Indicates the beginning of data and data type
‘!’(21H)
：
Command for the Projector
‘?’(3FH)
：
Query to the Projector (Request for data)
ID
：
Identification number of Projector
SP
：
Indicates the separation between ID and command, command and parameter,
parameter and parameter(20H)
CR
：
Indicates the end of data(0DH)
3.2
Tally (Response) Data Format (Projector to External Control)
3.2.1
Tally (Response) Data when Terminated Normally
Header
ID
SP
Normal Termination Status
SP
Parameter
SP
Parameter
・・
CR
Header
:
Indicates the beginning of tally (response) data
‘@’(40H)
ID
：
Identification number of the Projector
SP
：
Indicates the separation between ID and status, status and parameter,
parameter and parameter(20H)
Normal Termination
：
‘0’(30H)
Status
CR
：
Indicates the end of data(0DH)
* Parameter is sent when tally (response) data is issued in response to a query (request for data.)
There is