NEC LCD3215 External Control Guide - Page 30

Model Name Read

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Page 30 highlights

'A' (41h): Monitor ID LCD3215/LCD4215 must be ASCII 'A' (41h). 'B' (42h): Message type is "Command reply " N-N: Message length. Note.) The maximum data length that can be written to the monitor at a time is 32bytes. Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h). Message STX (02h): Start of Message 'C'-'3'-'1'-'6' (41h, 33h, 31h, 36h): Serial No. reply command Data(0)-Data(1)----Data(n):Serial Number  The data must be 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 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 SOH-'0'-'A'-'0'-'A'-'0'-'6' STX-'C'-'2'-'1'-'7'-ETX Check code BCC Delimiter CR Header SOH (01h): Start Of Header '0' (30h): Reserved 'A' (41h): Monitor ID LCD3215/LCD4215 must be ASCII 'A' (41h). '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, ETX (03h): End of Message 31h, 37h): Model Name command 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 a data for confirmation. Header Message SOH-'0'-'0'-'A'-'B'-N-N STX-'C'-'3'-'1'-'7'-Data(0) -Data(1)---- -Data(n)-ETX Check code Delimiter BCC CR Header SOH (01h): Start Of Header '0' (30h): Reserved '0' (30h): Message receiver is the controller 'A' (41h): Monitor ID LCD3215/LCD4215 must be ASCII 'A' (41h). 'B' (42h): Message type is "Command reply " N-N: Message length. Note.) The maximum data length that can be written to the monitor at a time is 32bytes. Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h). Message STX (02h): Start of Message 'C'-'3'-'1'-'7' (43h, 33h, 31h, 37h): Model Name reply Command (30/37)

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(30/37)
'A' (41h): Monitor ID
LCD3215/LCD4215 must be ASCII 'A' (41h).
'B' (42h): Message type is "Command reply "
N-N: Message length.
Note.) The maximum data length that can be written to the monitor at a time is 32bytes.
Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h).
Message
STX (02h): Start of Message
'C'-'3'-'1'-'6' (41h, 33h, 31h, 36h): Serial No. reply command
Data(0)-Data(1)----Data(n):Serial Number
The data must be 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
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'-'A'-'0'-'A'-'0'-'6'
STX-'C'-'2'-'1'-'7'-ETX
BCC
CR
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
'A' (41h): Monitor ID
LCD3215/LCD4215 must be ASCII 'A' (41h).
'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 a data for confirmation.
Header
Message
Check code
Delimiter
SOH-'0'-'0'-'A'-'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
'A' (41h): Monitor ID
LCD3215/LCD4215 must be ASCII 'A' (41h).
'B' (42h): Message type is "Command reply "
N-N: Message length.
Note.) The maximum data length that can be written to the monitor at a time is
32bytes.
Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h).
Message
STX (02h): Start of Message
'C'-'3'-'1'-'7' (43h, 33h, 31h, 37h): Model Name reply Command