NEC MultiSync C431 User Manual

Also see for MultiSync C431: User manual User manual Installation guide

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NEC MultiSync C431 User Manual Manual pdf 73 page image

(73/104)15. Security Lock15.1 Security Lock ControlThis command sets the condition of security lock function to "LOCK" or "UNLOCK".If security pass codes 1st to 4th are matched with monitor resisted pass codes, then thiscommand is executed, and reply no error status and a new condition.If codes aren't matched with them then setting isn't changed, and reply error status and acurrent condition.If the monitor receives this command while waiting for Pass codes inputs, then it only checksPass cords (and releases image muting if Pass codes are OK) and doesn't apply "EN" parameter.1) The controller requests the monitor to set the condition of security lock.Header Message CheckcodeDelimiterSOH-'0'-MonitorID-'0'-'A'-'1'-'0'STX-'C'-'2'-'1'-'D'-EN-P1-P2-P3-P4-ETXBCC 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".'1'-'0'(31h, 30h): Message lengthMessageSTX (02h): Start of Message'C'-'2'-'1'-'D' (43h, 32h, 31h, 44h): Security Lock Control commandEN-P1-P2-P3-P4: Lock condition control dataEN: Enable /Disable'0'-'0'(30h, 30h): Disable'0'-'1'(30h, 31h): EnableP1: Security Pass code 1st'0'-'0'(30h, 30h): "0"|'0'-'9'(30h, 39h): "9"P2: Security Pass code 2nd'0'-'0'(30h, 30h): "0"|'0'-'9'(30h, 39h): "9"P3: Security Pass code 3rd'0'-'0'(30h, 30h): "0"|'0'-'9'(30h, 39h): "9"P4: Security Pass code 4th'0'-'0'(30h, 30h): "0"|'0'-'9'(30h, 39h): "9"ETX (03h): End of MessageCheck codeBCC: Block Check CodeRefer to the section 4.3 “Check code” for a BCC calculation.DelimiterCR (0Dh): End of packet