Transmission/Receiving Protocol; Power (Command: A) - HP LD4201 User Manual

Transmission/Receiving Protocol

Transmission
[Command1][Command2][][Set ID][][Data][Cr]
*[Command 1]
*[Command 2]
*[Set ID]
*[Data]
*[Cr]
*[]
OK Acknowledgement
[Command2][][Set ID][][OK][Data][x]
*The Product transmits ACK (acknowledgement) based on this format when receiving normal data. At
this time, if the data is in data read mode, it indicates present status data. If the data is in data write
mode, it returns the data of the media player/computer.
Error Acknowledgement
[Command2][][Set ID][][NG][Data][x]
If there is an error, it returns NG

01. Power (Command: a)

To control Power On/Off of the Set.
Transmission
[k][a][][Set ID][][Data][Cr]
ENWW
First command (k, j, m, d, f, x)
Second command (a to z)
Set up the Set ID number of product. range: 01H to 63H. by setting
'0', server can control all products.
When operating with more than 2 sets using set ID as '0' at the same
time, do not check the ack message. Because all sets will send the
ack message, it is not possible to check all of the ack messages.
To transmit command data.
Transmit 'FF' data to read status of command.
Carriage Return
ASCII code '0 x 0 D'
ASCII code Space (0 x 20)
Transmission/Receiving Protocol 59