3M™ Digital Projector X31/X36/X46
© 3M 2010. All Rights Reserved.
10
RS-232C Communication (continued)
3. Response code / Error code
KVKRZVKH[DGHFLPDO
(1) ACK reply : 06h
:KHQWKHSURMHFWRUUHFHLYHVWKH6HW,QFUHPHQW'HFUHPHQWRU([HFXWH
FRPPDQGFRUUHFWO\WKHSURMHFWRUFKDQJHVWKHVHWWLQJGDWDIRUWKHVSHFL¿HG
LWHPE\>7\SH@DQGLWUHWXUQVWKHFRGH
(2) NAK reply : 15h
:KHQWKHSURMHFWRUFDQQRWXQGHUVWDQGWKHUHFHLYHGFRPPDQGWKHSURMHFWRU
returns the error code.
In such a case, check the sending code and send the same command again.
(3) Error reply : 1Ch + 0000h
:KHQWKHSURMHFWRUFDQQRWH[HFXWHWKHUHFHLYHGFRPPDQGIRUDQ\UHDVRQV
WKHSURMHFWRUUHWXUQVWKHHUURUFRGH
,QVXFKDFDVHFKHFNWKHVHQGLQJFRGHDQGWKHVHWWLQJVWDWXVRIWKHSURMHFWRU
(4) Data reply : 1Dh + xxxxh
:KHQWKHSURMHFWRUUHFHLYHVWKH*(7FRPPDQGFRUUHFWO\WKHSURMHFWRUUHWXUQV
the responce code and 2 bytes of data.
NOTE
)RUFRQQHFWLQJWKHSURMHFWRUWR\RXUGHYLFHVSOHDVHUHDGWKH
manual for each devices, and connect them correctly with suitable cables.
2SHUDWLRQFDQQRWEHJXDUDQWHHGZKHQWKHSURMHFWRUUHFHLYHVDQXQGH¿QHG
command or data.
3URYLGHDQLQWHUYDORIDWOHDVWPVEHWZHHQWKHUHVSRQVHFRGHDQGDQ\RWKHU
code.
7KHSURMHFWRURXWSXWVWHVWGDWDZKHQWKHSRZHUVXSSO\LVVZLWFKHG21DQG
when the lamp is lit. Ignore this data.
&RPPDQGVDUHQRWDFFHSWHGGXULQJZDUPXS
When the data length is greater than indicated by the data length code, the
SURMHFWRULJQRUHWKHH[FHVVGDWDFRGH&RQYHUVHO\ZKHQWKHGDWDOHQJWKLV
VKRUWHUWKDQLQGLFDWHGE\WKHGDWDOHQJWKFRGHWKHSURMHFWRUUHWXUQVWKHHUURU
code to the computer.
