Hitachi CP-CX300WN User Manual page 14

Command Control via the Network (continued)
2. Response code / Error code
( )
(1) ACK reply: 06h + yyh
(2) NAK reply: 15h + yyh
(3) Error reply: 1Ch + 0000h + yyh
(4) Data reply: 1Dh + xxxxh + yyh
(5) Authentication error reply: 1Fh + 0400h + yyh
(6) Projector busy reply: 1Fh + ××××h + yyh
Automatic Connection Break
Authentication
NOTE