8
RS-232C Communication (continued)
Requesting projector status (Get command)
6HQGWKHIROORZLQJUHTXHVWFRGHIURPWKH3&WRWKHSURMHFWRU
Command data (‘02H’ + ‘00H’ + type (2 bytes) + ‘00H’ + ‘00H’)
7KHSURMHFWRUUHWXUQVWKHUHVSRQVHFRGH
‘1DH’ + data (2 bytes)
WRWKH3&
Changing the projector settings (Set command)
6HQGWKHIROORZLQJVHWWLQJFRGHIURPWKH3&WRWKHSURMHFWRU
Command data (‘01H’ + ‘00H’ + type (2 bytes) + setting code (2 bytes))
7KHSURMHFWRUFKDQJHVWKHVHWWLQJEDVHGRQWKHDERYHVHWWLQJFRGH
7KHSURMHFWRUUHWXUQVWKHUHVSRQVHFRGH
‘06H’
WRWKH3&
Using the projector default settings (Reset Command)
7KH3&VHQGVWKHIROORZLQJGHIDXOWVHWWLQJFRGHWRWKHSURMHFWRU
Command data (‘06H’ + ‘00H’ + type (2 bytes) + ‘00H’ + ‘00H’)
7KHSURMHFWRUFKDQJHVWKHVSHFL¿HGVHWWLQJWRWKHGHIDXOWYDOXH
7KHSURMHFWRUUHWXUQVWKHUHVSRQVHFRGH
‘06H’
WRWKH3&
Increasing the projector setting value (Increment command)
7KH3&VHQGVWKHIROORZLQJLQFUHPHQWFRGHWRWKHSURMHFWRU
Command data (‘04H’ + ‘00H’ + type (2 bytes) + ‘00H’ + ‘00H’)
7KHSURMHFWRULQFUHDVHVWKHVHWWLQJYDOXHRQWKHDERYHVHWWLQJFRGH
7KHSURMHFWRUUHWXUQVWKHUHVSRQVHFRGH
‘06H’
WRWKH3&
Decreasing the projector setting value (Decrement command)
7KH3&VHQGVWKHIROORZLQJGHFUHPHQWFRGHWRWKHSURMHFWRU
Command data (‘05H’ + ‘00H’ + type (2 bytes) + ‘00H’ + ‘00H’)
7KHSURMHFWRUGHFUHDVHVWKHVHWWLQJYDOXHRQWKHDERYHVHWWLQJFRGH
7KHSURMHFWRUUHWXUQVWKHUHVSRQVHFRGH
‘06H’
WRWKH3&
When the projector cannot understand the received command
:KHQWKHSURMHFWRUFDQQRWXQGHUVWDQGWKHUHFHLYHGFRPPDQGWKHHUURUFRGH
‘15H’
LVVHQWEDFNWRWKH3&
6RPHWLPHVWKHSURMHFWRUFDQQRWSURSHUO\UHFHLYHWKHFRPPDQG,QVXFKDFDVH
WKHFRPPDQGLVQRWH[HFXWHGDQGWKHHUURUFRGH
‘15H’
LVVHQWEDFNWRWKH3&,I
WKLVHUURUFRGHLVUHWXUQHGVHQGWKHVDPHFRPPDQGDJDLQ
When the projector cannot execute the received command.
:KHQWKHSURMHFWRUFDQQRWH[HFXWHWKHUHFHLYHGFRPPDQGWKHHUURUFRGH
‘1CH’ +
‘xxxxH’
LVVHQWEDFNWRWKH3&
:KHQ WKH GDWD OHQJWK LV JUHDWHU WKDQ LQGLFDWHG E\ WKH GDWD OHQJWK FRGH WKH
SURMHFWRULJQRUHWKHH[FHVVGDWDFRGH&RQYHUVHO\ZKHQWKHGDWDOHQJWKLVVKRUWHU
WKDQLQGLFDWHGE\WKHGDWDOHQJWKFRGHDQHUURUFRGHZLOOEHUHWXUQHGWRWKH3&
NOTE
2SHUDWLRQFDQQRWEHJXDUDQWHHGZKHQWKHSURMHFWRUUHFHLYHVDQ
XQGH¿QHGFRPPDQGRUGDWD
3URYLGH DQ LQWHUYDO RI DW OHDVW PV EHWZHHQ WKH UHVSRQVH FRGH DQG DQ\
RWKHUFRGH
7KHSURMHFWRURXWSXWVWHVWGDWDZKHQWKHSRZHUVXSSO\LVVZLWFKHG21DQG
ZKHQWKHODPSLVOLW,JQRUHWKLVGDWD
&RPPDQGVDUHQRWDFFHSWHGGXULQJZDUPXS
