Communications Protocol

[2] Communications Flow

Note: ◦Start the transmission of the next data after confirming the response command.

◦The maximum transmission interval of the various byte data is 500 [msec]. If this is exceeded, a communication error is detected in the camera unit, the receiving data is deleted, and data from the header is waiting to be received again. Furthermore, there are no special regulations regarding the minimum value.

◦All the commands can be acquired after the periods below after start-up.

MD600(P), MD500(P): 6 seconds

MD800(P), MD700(P): 9 seconds

When auto pixel defect compensation is set to ON, below period will be added to above at the longest.

MD600(P), MD500(P): 15seconds

MD800(P), MD700(P): 20seconds

3 During Query Command (ACK)

Transmission

Transmission

Source

Destination (Unit)

 

Header

 

 

 

 

 

 

Message 1

 

 

 

Message 2

 

 

 

Repeats the byte

 

 

 

Query Command

 

count and the message

 

and response commu-

Transmissions

 

nications in response

 

 

 

to the contents of the

 

 

 

message.

 

 

 

Checksum

 

 

 

Terminator

 

 

Header

 

 

 

 

 

 

 

 

 

Message 1

 

 

 

Message 2

 

Query Command

 

Response

In factory default, Auto pixel defect compensation is set to OFF at start-up.

1 During Settings Command

Checksum

Repeats the byte count and the message and response commu- nications in response to the contents of the message.

Transmission

Transmission

Source

Destination (Unit)

 

Header

 

 

 

 

 

 

Message 1

 

 

 

Message 2

 

 

 

Repeats the byte

 

 

 

 

 

 

count and the message

Settings Command

 

and response commu-

Transmissions

 

nications in response

 

 

 

to the contents of the

 

 

 

message.

 

 

 

Checksum

 

 

 

Terminator

 

 

Response Command

 

 

 

 

 

 

 

2 During Query Command (Other than ACK)

Transmission

Transmission

Source

Destination (Unit)

 

Header

 

 

 

 

 

 

Message 1

 

 

 

Message 2

 

 

 

Repeats the byte

 

 

 

Query Command

 

count and the message

 

Transmissions

 

and response commu-

 

 

 

nications in response

 

 

 

to the contents of the

 

 

 

message.

 

 

 

Checksum

 

 

 

Terminator

 

 

Response Command

 

 

 

(NACK/ERR)

 

 

 

 

 

 

 

Terminator

Response Command (ACK)

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Image 8
Sanyo VCC-MD700, VCC-MD400P, VCC-MD500, VCC-MD300 Communications Flow, During Query Command ACK, During Settings Command