Panasonic PT-D7700U-K Dlp Projector - English/ French - Page 82

Using the serial terminals The main unit is equipped with SERIAL terminals located in its terminal section on the side, and this terminal is compliant with RS-232C. Also a serial output terminal is provided to enable plural projector control. Examples of connection Single projector PC D-Sub 9-pin (female) IN RS-232C (G) RS-422 (R) OUT RS-232C (G) RS-422 (R) SERIAL Plural projectors D-Sub 9-pin D-Sub 9-pin D-Sub 9-pin D-Sub 9-pin (female) (male) (female) (male) PC IN RS-232C (G) RS-422 (R) OUT RS-232C (G) RS-422 (R) SERIAL IN RS-232C (G) RS-422 (R) OUT RS-232C (G) RS-422 (R) SERIAL D-Sub 9-pin (male) Communication cable D-Sub 9-pin D-Sub 9-pin D-Sub 9-pin (male) (female) (male) Communication cable Communication cable Pin assignments and signal names D-Sub 9-pin (female), external appearance Serial input terminal Pin No. Signal name Description NC TXD Send data RXD Receive data Connected internally GND Ground NC CTS RTS Connected internally NC D-Sub 9-pin (male), external appearance Serial output terminal Pin No. Signal name Description NC RXD Receive data TXD Send data NC GND Ground NC RTS Connected internally CTS NC Communication conditions (Factory setting) Signal level Synchronization method Baud rate Parity Character length Stop bit X parameter S parameter RS-232C-compliant Start-stop synchronization 9 600bps None 8 bits 1 bit None None Basic format Transmission from the computer begins with STX, then the ID, command, parameter, and ETX are sent in this order. Add parameters according to the details of control. STX A D I 1 I 2 ; C1 C2 C3 : P1 P2 Pn ETX (2 bytes) Two ID characters (2 bytes) Semicolon (1 byte) Colon (1 byte) Start ZZ, 1 to 64 and 0A to 0Z 3 command (1 byte) ID designate characters (3 bytes) End (1 byte) Parameter (undefined length) Attention • No command can be sent or received for 10 to 60 seconds after the lamp starts lighting. Try sending any command after that period has elapsed. • When sending several commands, be sure to wait for a response from the projector before sending the next command. When sending commands without parameters, a colon (:) is not necessary. 82 Note • If a wrong command is received, the projector will send an "ER401" command to the computer. • Projector ID supported on the RS-232C interface is ZZ (ALL) and a group of 1 to 64 and 0A to 0Z. • If a command is sent with a projector ID specified, the projector will return answer back only in the following cases: If it coincides with the projector ID, ID specification is ALL and VPS-SYSTEM is the master, or ID specification is group and Group is the master.