NEC X981UHD External Control Codes - Page 9
Message, Check code, Delimiter
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4.1 Header block format (fixed length) Header Message Check code Delimiter SOH 1st Reserved '0' 2nd Destination 3rd Source 4th Message Type 5th Message Length 6th -7th 1stbyte) SOH: Start of Header ASCII SOH (01h) 2ndbyte) Reserved: Reserved for future extensions. On this monitor, it must be ASCII '0'(30h). 3rdbyte) Destination: Destination equipment ID. (Receiver) Specify a commands receiver's address. The controller sets the "MONITOR ID" or "GROUP ID" of the monitor controlled in here. On the reply, the monitor sets '0' (30h), always. "MONITOR ID", "GROUP ID" to "Destination Address" conversion table is as follows, Monitor ID 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ALL Destination Address 41h('A') 42h('B') 43h('C') 44h('D') 45h('E') 46h('F') 47h('G') 48h('H') 49h('I') 4Ah('J') 4Bh('K') 4Ch('L') 4Dh('M') 4Eh('N') 4Fh('O') 50h('P') 51h('Q') 52h('R') 53h('S') 54h('T') 55h('U') 56h('V') 57h('W') 58h('X') 59h('Y') 2Ah('*') Monitor ID 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Destination Address 5Ah('Z') 5Bh 5Ch 5Dh 5Eh 5Fh 60h 61h 62h 63h 64h 65h 66h 67h 68h 69h 6Ah 6Bh 6Ch 6Dh 6Eh 6Fh 70h 71h 72h Monitor ID 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 Destination Address 73h 74h 75h 76h 77h 78h 79h 7Ah 7Bh 7Ch 7Dh 7Eh 7Fh 80h 81h 82h 83h 84h 85h 86h 87h 88h 89h 8Ah 8Bh Monitor ID 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Destination Address 8Ch 8Dh 8Eh 8Fh 90h 91h 92h 93h 94h 95h 96h 97h 98h 99h 9Ah 9Bh 9Ch 9Dh 9Eh 9Fh A0h A1h A2h A3h A4h Group ID A B C Destination Address 31h('1') 32h('2') 33h('3') Group ID D E F Destination Address 34h('4') 35h('5') 36h('6') Group ID G H I Destination Address 37h('7') 38h('8') 39h('9') Group ID J Destination Address 3Ah(':') (9/130)