Weekend Read And Write; Weekend Read - NEC MultiSync C431 User Manual

12. Weekend read and write

12.1 Weekend Read

This command is used in order to read the setting of Weekend.
1) The controller requests the monitor to reply with the Date & Time.
Header
SOH-'0'-Monitor ID-
'0'-'A'-'0'-'8'
Header
SOH (01h): Start of Header
'0' (30h): Reserved
Monitor ID: Specify the Monitor ID of which you want to get status.
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
Message
STX (02h): Start of Message
'C'-'A'-'1'-'A' (43h, 41h, 31h, 41h): " Weekend " command
'0'-'0' (30h, 30h): read request
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 Date & Time to the controller.
Header
SOH-'0'-'0'-Monitor ID-
'B'-'0'-'C'
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', the replying Monitor ID is '1'.
'B' (42h): Message type is "Command reply"
'0'-'C'(30h, 43h): Message length
Message
STX (02h): Start of Message
'C'-'B'-'1'-'A' (43h, 42h, 31h, 41h): " Weekend reply " command
'0'-'0' (30h, 30h): read request
ST: Status
'0'-'0'(30h, 30h): No error
'0'-'1'(30h, 31h): Error
WEEK: Weekend
'0'-'0'(30h, 30h): None
bit assignment of a day of the week.
bit0: Monday
bit1: Tuesday
bit2: Wednesday
bit3: Thursday
bit4: Friday
bit5: Saturday
bit6: Sunday
Message
STX-'C'-'A'-'1'-'A'-'0'-'0'-ETX
Message
STX-'C'-'B'-'1'-'A'-'0'-'0'-ST-
WEEK-ETX
(63/104)
Check code
Delimiter
BCC CR
Check code Delimiter
BCC CR