Hitachi CP-A222WN User Manual page 201

7.4 Command Control via the Network (continued)
Reply Data format
The connection ID (the data is same as the connection ID data on the sending
data format) is attached to the RS-232C commands reply data.
<ACK reply>
Reply
0x06
<NAK reply>
Reply
0x15
<Error reply>
Reply
0x1C
<Data reply>
Reply
0x1D
<Projector busy reply>
Reply
0x1F
<Authentication error reply>
Reply
0x1F
Connection
ID
1 byte
Connection
ID
1 byte
Error code
2 bytes
Data
2 bytes
Status code
2 bytes
Authentication
Error code
0x04 0x00
Connection
ID
1 byte
Connection
ID
1 byte
Connection
ID
1 byte
Connection
ID
1 byte
7. Other Functions
65