NEC LCD Monitor, Manual

Page: 73 / 137

(73/137)
12.2 Model Name Read
This command is used in order to read the Model Name.
1) The controller requests the monitor to read Model Name.
Header Message Check code Delimiter
SOH-'0'-Monitor ID-
'0'-'A'-'0'-'6'
STX-'C'-'2'-'1'-'7'-ETX BCC CR
Header
SOH (01h): Start of Header
'0' (30h): Reserved
Monitor ID: Specify the Monitor ID which you want to get Model Name.
Ex.) If Monitor ID is '1', specify 'A'.
'0' (30h): Message sender is the controller.
'A' (41h): Message type is "Command".
'0'-'6'(30h, 36h): Message length
Message
STX (02h): Start of Message
'C'-'2'-'1'-'7' (43h, 32h, 31h, 37h): Model Name command
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5
“
Check code
”
for a BCC calculation.
Delimiter
CR (0Dh): End of packet
2) The monitor replies the model name data to the controller.
Header Message Check code Delimiter
SOH-'0'-'0'-Monitor ID-
'B'-N-N
STX-'C'-'3'-'1'-'7'-
Data(0) -Data(1)
—
----Data(n)-ETX
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', the replying Monitor ID is '1'.
'B' (42h): Message type is "Command reply".
N-N: Message length
Note.) The maximum data length that can be returned from the monitor at a time is
32bytes.
Message
STX (02h): Start of Message
'C'-'3'-'1'-'7' (43h, 33h, 31h, 37h): Model Name reply Command
Data(0) -Data(1)----Data(n):Model name

These data are encoded to ASCII characters strings.
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5
“
Check code
”
for a BCC calculation.
Delimiter
CR (0Dh): End of packet