NEC LCD4010-BK LCD4010 external control command - Page 13

Header SOH (01h): Start of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID which you want to get a value. Ex.) If Monitor ID is '1', specify 'A'. '0' (30h): Message sender is the controller 'E' (45h): Message Type is "Set parameter command" '0'-'A' (30h, 41h): Message length is 10 bytes Message STX (02h): Start of Message '0'-'2' (30h, 32h): Operation code page number is 0 '7'-'8' (37h, 38h): Operation code is 78h (on page 2) '0'-'0'-'0'-'1' (30h, 30h, 30h, 31h): Select the temperature sensor #1 (01h). 00h: No meaning 01h: Sensor #1 02h: Sensor #2 ETX (03h): End of Message Check code BCC: Block Check Code Refer to the section 4.5 "Check code" for a BCC calculation. Delimiter CR (0Dh): End of packet Step 2. The monitor replies for confirmation. Header SOH-'0'-'0'-Monitor ID-'F'-'1'-'2' Message STX-'0'-'0'-'0'-'2'-'7'-'8'-'0'-'0'-'0'-'0' -'0'-'2'-'0'-'0'-'0'-'1'-ETX Check code BCC Header SOH (01h): Start of Header '0' (30h): Reserved '0' (30h): Message receiver is the controller Monitor ID: Indicates a replying Monitor ID. Ex.) When this byte is set to 'A', the replying Monitor ID is '1'. 'F' (46h): Message Type is "Set parameter reply" '1'-'2' (30h, 32h): Message length is 18 bytes Message STX (02h): Start of Message '0'-'0' (30h, 30h): Result code. No error '0'-'2' (30h, 32h): Operation code page number is 0 '7'-'8' (37h, 38h): Operation code is 78h (in the page 2) '0'-'0' (30h, 30h): This operation is "Set parameter" type '0'-'0'-'0'-'2' (30h, 30h, 30h, 32h): Number of temperature sensors 2 (0002h). '0'-'0'-'0'-'1' (30h, 30h, 30h, 31h): temperature sensor is #1. ETX (03h): End of Message Check code BCC: Block Check Code Refer to the section 4.5 "Check code" for a BCC calculation. Delimiter CR (0Dh): End of packet Delimiter CR Step 3. The controller requests the monitor to send the temperature from the selected sensor. Header SOH-'0'-Monitor ID-'0'-'C'-'0'-'6' Message Check code STX-'0'-'2'-'7'-'9'-ETX BCC Delimiter CR Header SOH (01h): Start of Header '0' (30h): Reserved (13/37)