User manual CANON LV-7255

[. . . ] Data Portion of Response ====================================================================== 1. Projector Control ---------------------------------------------------------------------The control commands allow the user to control the functions of the projector via a computer. ====================================================================== 2. Interface Conditions ---------------------------------------------------------------------Serial connection ---------------------------------------------------------------------The communications method conforms to the RS-232C standard. [. . . ] Command: 02H 01H 00H 00H 00H 03H Response (ACK): At the time of a success 22H 01H 01H xxH 00H CKS (*2) Response (NAK): At the time of a failure A2H 01H 01H xxH 02H DATA01 DATA02 (*2) CKS Data portion Description ----------------------------------------------------------------------DATA01 Error type DATA02 Error description For more information, see "5. Data Portion of Response. " Supplement: -This command will fail during switching input signal. (NAK will be returned) -The projector doesn't accept the other command during power off processing. ( It contains a cooling period. ) 003. INPUT SELECT RGB(*5) ********************************************************************** Function: This command switches the input terminal to RGB(*5). Command: 02H 03H 00H 00H 02H 01H <DATA01> CKS Data Portion Contents ------------------------------------------------------------------DATA01 01H : RGB1(*5) 02H : RGB2(*5)(!) (!) LV-7240/7245/7250/7255 only Response (ACK): At the time of a success 22H 03H 01H xxH 01H DATA01 CKS (*2) Data Portion Contents ------------------------------------------------------------------DATA01 Results 00H : Normal FFH : Error (Signal select was not executed) Response (NAK): At the time of a failure A2H 03H 01H xxH 02H DATA01 DATA02 (*2) CKS (3) Data portion Description ----------------------------------------------------------------------DATA01 Error type DATA02 Error description For more information, see "5. INPUT SELECT VIDEO ********************************************************************** Function: This command switches the input terminal to VIDEO. Command: 02H 03H 00H 00H 02H 01H 06H 0EH Response (ACK): At the time of a success 22H 03H 01H xxH 01H DATA01 CKS (*2) Data Portion Contents ------------------------------------------------------------------DATA01 Results 00H : Normal FFH : Error ((Signal select was not executed)) Response (NAK): At the time of a failure A2H 03H 01H xxH 02H DATA01 DATA02 (*2) CKS Data portion Description ----------------------------------------------------------------------DATA01 Error type DATA02 Error description For more information, see "5. INPUT SELECT S-VIDEO ********************************************************************** Function: This command switches the input terminal to S-VIDEO. Command: 02H 03H 00H 00H 02H 01H 0BH 13H Response (ACK): At the time of a success 22H 03H 01H xxH 01H DATA01 CKS (*2) Data Portion Contents ------------------------------------------------------------------DATA01 Results 00H : Normal FFH : Error((Signal select was not executed) Response (NAK): At the time of a failure A2H 03H 01H xx0H 02H DATA01 DATA02 (*2) CKS Data portion Description ----------------------------------------------------------------------DATA01 Error type DATA02 Error description For more information, see "5. NO SHOW ON ********************************************************************** Function: This command mutes a picture. Command: 02H 10H 00H 00H 00H 12H Response (ACK): At the time of a success 22H 10H 01H xxH 00H CKS (4) (*2) Response (NAK): At the time of a failure A2H 10H 01H xxH 02H DATA01 DATA02 (*2) CKS Data portion Description ----------------------------------------------------------------------DATA01 Error type DATA02 Error description For more information, see "5. Data Portion of Response. " Supplement: * NO SHOW function (Picture Mute)is cancelled for the following: Input connector switching Video signal switching 007. NO SHOW OFF ********************************************************************** Function: This command cancels the picture muting. Command: 02H 11H 00H 00H 00H 13H Response (ACK): At the time of a success 22H 11H 01H xxH 00H CKS (*2) Response (NAK): At the time of a failure A2H 11H 01H xxH 02H DATA01 DATA02 (*2) CKS Data portion Description ----------------------------------------------------------------------DATA01 Error type DATA02 Error description For more information, see "5. [. . . ] This returns ACK with adding data to the data portion for the command that requests data. * At the time of a failure( NAK ) This adds a cause of not accepting the command to data portion to return it. (Example) Power On Command: 02H 00H Response: A2H 00H 00H 01H 00H 20H 00H 02H CKS DATA01 DATA02 CKS +------------+------------+--------------------------------------+ | DATA01 | DATA02 | | | | Error | | | Error types| description| Error contents | +------------+------------+--------------------------------------+ | 00H | 00H | Unknown command | | 00H | 01H | The current model does not support | | | | this function. [. . . ]