NEC UN552S External Controls - Page 113

22. Power Save Mode 22.1 Power Save Mode Read This command is used in order to read the Power Save Mode. 1) The controller requests the monitor to read Power Save Mode Header SOH-'0'-Monitor ID- '0'-'A'-'0'-'8' Message STX-'C'-'A'-'0'-'B'-0'-'0'-ETX Check code BCC Delimiter CR Header SOH (01h): Start of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID of which you want to change a setting. Ex.) If Monitor ID is '1', specify 'A'. '0' (30h): Message sender is the controller. 'A' (41h): Message type is "Command". '0'-'8'(30h,38h): Message length (8byte) Message STX (02h): Start of Message 'C'-'A'-'0'-'B' (43h, 41h, 30h, 42h): Power Save Mode command '0'-'0' (30h, 30h): Read ETX (03h): End of Message Check code BCC: Block Check Code Refer to the section 4.3 "Check code" for a BCC calculation. Delimiter CR (0Dh): End of packet 2) The monitor replies Power Save Mode to the controller. Header SOH-'0'-'0'-Monitor ID'B'-'0'-'A' Message STX-'C'-'B'-'0'-'B'-'0'-'0'-MODE-ETX Check code Delimiter BCC CR Header SOH (01h): Start of Header '0' (30h): Reserved '0' (30h): Message receiver is the controller. Monitor ID: Indicate a replying Monitor ID. Ex.) When this byte is set to 'A', replying monitor's ID is '1'. 'B' (42h): Message type is "Command reply". '0'-'A'(30h,41h): Message length (10byte) Message STX (02h): Start of Message 'C'-'B'-'0'-'B' (43h, 42h, 30h, 42h): Power Save Mode Reply '0'-'0' (30h, 30h): Read MODE: POWER SAVE MODE 00h (30h, 30h): AUTO POWER SAVE 02h (30h, 32h): POWER SAVE OFF ETX (03h): End of Message (113/145)