NEC V552-TM External Control Codes - Page 16

5.4 "Set parameter" reply STX Result OP code page OP code Type Max value Requested setting Value ETX Hi Lo Hi Lo 1st 2nd-3rd 4th-5th Hi Lo 6th-7th Hi Lo 8th-9th MSB LSB 10th-13th MSB LSB 14th -17th 18th The Monitor echoes back the parameter and status of the requested operation code. 1stbyte) STX: Start of Message ASCII STX (02h) 2nd-3rdbytes) Result code ASCII '0''0' (30h, 30h): No Error. ASCII '0''1' (30h, 31h): Unsupported operation with this monitor or unsupported operation under current condition. 4th-5thbytes) OP code page: Echoes back the Operation code page for confirmation. Reply data from the monitor is encoded to ASCII characters. Ex.) OP code page 02h -> OP code page = ASCII '0' and '2' (30h and 32h) Refer to Operation code table. 6th-7thbytes) OP code: Echoes back the Operation code for confirmation. Reply data from the monitor is encoded to ASCII characters. Ex.) OP code 1Ah -> OP code (Hi) = ASCII '1' (31h) OP code (Lo) = ASCII 'A' (41h) Refer to Operation code table 8th-9thbytes) Type: Operation type code ASCII '0''0' (30h, 30h): Set parameter ASCII '0''1' (30h, 31h): Momentary Like Auto Setup function, that automatically changes the parameter. 10th-13thbytes) Max. value: Maximum value that monitor can accept. (16bits) Reply data from the monitor is encoded to ASCII characters. Ex.) '0''1''2''3' means 0123h (291) 14th -17thbytes) Requested setting Value: Echoes back the parameter for confirmation. (16bits) Reply data from the monitor is encoded to ASCII characters. Ex.) '0''1''2''3' means 0123h (291) 18thbyte) ETX: End of Message ASCII ETX (03h) (16/72)