NEC LCD Monitor Manual 

Also see for LCD Monitor: Control guide

Contents

NEC LCD Monitor Manual  Manual pdf 121 page image

(121/137)22. Security Enable22.1 Security Enable ReadThis command is used in order to read the Security Enable.1) The controller requests the monitor to read Security EnableHeader Message Check code DelimiterSOH-'0'-Monitor ID-'0'-'A'-'0'-'8'STX-'C'-'A'-'0'-'C'-'0'-'2'-ETX BCC CRHeaderSOH (01h): Start of Header'0' (30h): ReservedMonitor 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)MessageSTX (02h): Start of Message'C'-'A'-'0'-'C' (43h, 41h, 30h, 43h): Security password Command'0'-'2' (30h, 32h): Enable ReadETX (03h): End of MessageCheck codeBCC: Block Check CodeRefer to the section 4.5 “Check code” for a BCC calculation.DelimiterCR (0Dh): End of packet2) The monitor replies Security Enable to the controller.Header Message Check code DelimiterSOH-'0'-'0'-Monitor ID-'B'-'0'-'A'STX-'C'-'B'-'0'-'C'-'0'-'2'-EN-ETX BCC CRHeaderSOH (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)MessageSTX (02h): Start of Message'C'-'B'-'0'-'C'-'0'-'2' (43h, 42h, 30h, 41h, 30h, 32h): Get Security Enable Disable ReplyEN: Status00h: Disable01h: EnableETX (03h): End of MessageCheck codeBCC: Block Check CodeRefer to the section 4.5 “Check code” for a BCC calculation.