ViewSonic PJL9371 Guía Del Usuario page 73

RS-232C Communication (continued)
3. Response code / Error code
(1) ACK reply : 06h
When the projector receives the Set, Increment, Decrement or Execute
command correctly, the projector changes the setting data for the specified
item by [Type], and it returns the code.
(2) NAK reply : 15h
When the projector cannot understand the received command, the projector
returns the error code.
In such a case, check the sending code and send the same command again.
(3) Error reply : 1Ch + 0000h
When the projector cannot execute the received command for any reasons,
the projector returns the error code.
In such a case, check the sending code and the setting status of the projector.
(4) Data reply : 1Dh + xxxxh
When the projector receives the GET command correctly, the projector returns
the responce code and 2 bytes of data.
NOTE • Operation cannot be guaranteed when the projector receives an
undefined command or data.
• Provide an interval of at least 40ms between the response code and any
other code.
• The projector outputs test data when the power supply is switched ON, and
when the lamp is lit. Ignore this data.
• Commands are not accepted during warm-up.
ViewSonic
("h" shows hexadecimal)
68 PJL9371