NEC UN552S External Controls - Page 118

22.4 Auto Power Save Time Write This command is used in order to write the setting of Auto Power Save Time. 1) The controller requests the monitor to write Time. Header SOH-'0'-Monitor ID- '0'-'A'-'0'-'A' Message Check code STX-'C'-'A'-'0'-'B'-'0'-'3'-TIME-ETX BCC 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'-'A'(30h,41h): Message length (10byte) Delimiter CR Message STX (02h): Start of Message 'C'-'A'-'0'-'B' (43h, 41h, 30h, 42h): Power Save Mode command '0'-'3' (30h, 33h): Auto Power Save Time Write TIME: AUTO POWER SAVE TIME (sec.) 00h (30h, 30h) - 78h (37h, 38h): 1 (5dec.) - 120 (600sec.) 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 a written in result. Header Message SOH-'0'-'0'-Monitor ID- STX-'C'-'B'-'0'-'B'-'0'-'3'-ST-ETX 'B'-'0'-'8' Check code BCC 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'-'8'(30h,38h): Message length (8byte) Delimiter CR Message STX (02h): Start of Message 'C'-'B'-'0'-'B' (43h, 42h, 30h, 42h): Power Save Mode Reply '0'-'3' (30h, 33h): Auto Power Save Time Write ST: Error Status No Error : 00h (30h, 30h) Error : 01h (30h, 31h) 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 (118/145)