LG M3201C User Manual page 45

Transmission /Receiving Protocol
I [Commandl][Command2][ ][Set ID][ ][Data][Cr] I
* [Command I]: First command. (j, k, m, d)
* [Command 2]: Second command_
* [Set ID]: Set up the, Set: ID number of product.
range : 1~99, by sexing '0', server can control a]ll products
* In case of operating with more, than 2 sets: using set ]D as: '0' at the same
time, it should not be checked the ack message,
Because all seLs will send the ack message, so it's impossible the check the
whole ack messages
* [DATA]: To transmit command data.
Transmit 'FF' data to read status of command,
* [Cr]: Carriage Return
ASCII code '0x0D'
* [ ]: ASCII code Space (0x20)
OK A cknowledgemen t
I [Command2][ ][Set IDI[ ][OK][Datal[x ] 1
* The Product transmits ACK (acknowIedgemen0 based on
this format when receiving normal data. At this: time, if the
data is da_ read mode, it indicates present status data,
If the data is data write mode, it returns the data of the PC
computer,
Errot: Acknewledgement
I [Command2][ ][Set ]D][ ][NG][Data][x]
* if tlhere is error, it: returns NG
1