Pioneer PX-42VP5 User Manual

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Communication Format
 
 
 
Command1 
Command  1,  along  with  command  2,  is  a  number  used  to  distinguish  each 
command. 
When making it operate using ID, bit1 and bit0 are set up as follows. 
 
Bit1,Bit0  Unit ID distinction bit 
11B   
:Usually, a form (with no ID) 
10B   
:Usually, a form (with no ID) 
01B   
:Set ID 
00B   
:Video wall ID 
 
In the case of ACK, when the lower order 4 bits is FH (as in 3FH and 
7FH),  this  indicates  that  the  commands  and  data  of  the  supported 
equipment have been received. When the lower order 4 bits is BH (as in 
3BH  and  7BH),  this  indicates  that  unsupported  commands  and  data 
have been received. 
 
Unit ID1,2 (UA1,UA2) 
Unit  ID  1  and  unit  ID  2  are  numbers  used  to  identify  the  equipment 
that is to be connected. 
60H is used for the plasma monitor and 80H is used for external control 
equipment such as a personal computer. 
Command 1 
Unit ID 1 
Unit ID 2 
Command 2 
Data length 
Data 
Check sum 
8bit  8bit  8bit  8bit  8bit  8bit 
8bit  8bit