![](http://pdfasset.owneriq.net/a/c8/ac8a8b56-206b-4611-b83c-e013119d0c7d/ac8a8b56-206b-4611-b83c-e013119d0c7d-bg3d.png)
61
Preparations
1
1 Preparations
Ack
V.Wall_On : Same as above
Nak
"ERR": A code showing what error has occurred
Header Command
ID
Data
length
Ack/
Nak
r-CMD Val1 Val2
Checksum
0xAA 0xFF 4 ‘A’ 0x89 Wall_Div Wall_SNo
Header Command
ID
Data length Ack/Nak r-CMD Val1
Checksum
0xAA 0xFF 3 ‘N’ 0x89 "ERR"