NEC LCD4620-2-IT LCD4020/4620/5220/6520, M40/M46 external control commands - Page 3

"Monitor ID" to "Destination Address" conversion table is as follows, Monitor ID 1 2 3 4 5 6 7 8 9 10 11 12 13 ALL Destination Address (ASCII) 'A'(41h) 'B'(42h) 'C'(43h) 'D'(44h) 'E'(45h) 'F'(46h) 'G'(47h) 'H'(48h) 'I'(49h) 'J'(4Ah) 'K'(4Bh) 'L'(4Ch) 'M'(4Dh) '*'(2Ah) Monitor ID 14 15 16 17 18 19 20 21 22 23 24 25 26 Destination Address (ASCII) 'N'(4Eh) 'O'(4Fh) 'P'(50h) 'Q'(51h) 'R'(52h) 'S'(53h) 'T'(54h) 'U'(55h) 'V'(56h) 'W'(57h) 'X'(58h) 'Y'(59h) 'Z'(5Ah) Ex.) If you want to control a monitor that has the "ID No." as '1', specify a destination address 'A'(41h). If you want to control all of the monitors which are connected by a daisy chain, specify a destination address ' '(2Ah). 4thbyte) Source: Source equipment ID. (Sender) Specify a sender address. The controller must be '0' (30h). 5thbyte) Message Type: (Case sensitive.) Refer to section 4.2 "Message block format" for more details. ASCII 'A' (41h): Command. ASCII 'B' (42h): Command reply. ASCII 'C' (43h): Get current parameter from a monitor. ASCII 'D' (44h): "Get parameter" reply. ASCII 'E' (45h): Set parameter. ASCII 'F' (46h): "Set parameter" reply. 6th -7th bytes) Message Length: Specify the length of the message (that follows the header) from STX to ETX. This length includes STX and ETX. The byte data must be encoded to ASCII characters. Ex.) The byte data 3Ah must be encoded to ASCII characters '3' and 'A' (33h and 41h). The byte data 0Bh must be encoded to ASCII characters '0' and 'B' (30h and 42h). 4.2 Message block format Header Message Check code Delimiter "Message block format" is allied to the "Message Type" in the "Header". Refer to the section 6 "Message format" for more detail. (3/40)