Panasonic PTDS8500U PTDS8500U User Guide - Page 118

Technical Information JJBasic 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 Start (1 byte) (2 bytes) 2 ID Semicolon characters (1 byte) (2 bytes) ZZ, 1 to 64 and 0A to 0Z ID designate 3 command characters (3 bytes) Colon (1 byte) Parameter (undefined length) ½½½ When sending commands without parameters, a colon (:) is not necessary. JJBasic format (with sub command) Same as basic format End (1 byte) STX A D I 1 I 2 ; C1 C2 C3 : ETX S1 S2 S3 S4 S5 E P1 P2 P3 P4 P5 P6 Sub command (5 bytes) Parameter (6 bytes) Symbol "+" or "-" (1 byte) and set value or adjustment value (5 bytes) Operation (1 byte) "=" (Value specified using parameter is set) ½½½ When transmitting a command which does not need a parameter, the operation (E) and parameter are not necessary. Attention zzNo command can be sent or received for 60 seconds after the lamp starts lighting. Try sending any command after that period has elapsed. zzWhen transmitting multiple commands, be sure to wait until 0.5 seconds has elapsed after receiving the response from the projector before sending the next command. Note zzWhen the command can not be executed, the [ER401] status is sent from the projector to the personal computer. zzWhen the wrong parameter is sent, the [ER402] status is sent from the projector to the personal computer. zzProjector ID supported on the RS-232C interface is ZZ (ALL) and a group of 1 to 64 and 0A to 0Z. zzIf 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 If the ID specification is ALL and responding (ID ALL) is [ON] If the ID specification is Group and responding (ID Group) is [ON] zzThe "STX" character code is 02 and the "ETX" character code is 03. Appendix 118 - ENGLISH