Marantz SR6001 Page: 5, Transmission data format from Host to Slave, Form1: Command

SR6001 RS-232C Control Specification

Page: 5 / 19

Document Version [1.00]

3-2. Transmission data format

3-2-1. Transmission data format from Host to Slave

There are two kinds of transmission data form from Host shown below.

3-2-1-1. Form1: Command

Command is a data that requests some status change.

Start character		: ’@’
COMMAND		: see “Command list”
End character (CR) : 0Dh
	Start	Command	End
	@	“xxx:”+”...”	0Dh

3-2-1-2. Form2: Status request

Status request is a data that requests a answer of some status.

Start character		: ’@’
Request status		: see “Status request list”
Request character : ‘?’
End character (CR) : 0Dh
	Start	Command	End
	@	“xxx:?”+”...”	0Dh

3-2-2. Transmission data format from Slave to Host

There are two kinds of transmission data form from Slave shown below.

3-2-2-1. Form1: ACK/NAK

ACK is a reply data from Slave when Slave got an acceptable command data from Host. (ACK is sent to Host when Slave has no related status by the Command.)

Start character			: ’@’,	ACK	: 06h,	End character (CR) : 0Dh
	Start	ACK	End
	@	06h	0Dh

NAK is a reply data from Slave when Slave got an incorrect Command data, Status request data or some other data from Host.

Start character			: ’@’,	NAK	: 15h,	End character (CR) : 0Dh
	Start	NAK	End
	@	15h	0Dh

3-2-2-2. Form2: Status answer and Auto status feedback

Status answers are reply data when Slave got an acceptable Request status or Command data from Host. Auto status feedbacks are send to Host data when a Slave’s status is changed.

Start character		: ’@’
Answer character		: see “Status list”
End character (CR) : 0Dh
	Start	Status	End
	@	“xxx:”+”...”	0Dh

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