NEC V801 Manuale Utente
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8.2 Asset Data write
This command is used in order to write Asset Data.
1) The controller requests the monitor to write Asset data.
Header
Message
Check code
Delimiter
SOH-'0'-Monitor ID-'0'-'A'-N-N
STX-'C'-'0'-'0'-'E'-'0'-'0'-
Data(0)-Data(1)---Data(N)-ETX
Data(0)-Data(1)---Data(N)-ETX
BCC
CR
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
Monitor ID: Specify the Monitor ID in which you want to write data.
'0' (30h): Reserved
Monitor ID: Specify the Monitor ID in which you want to write data.
Ex.) If Monitor ID is '1', specify 'A'.
'0' (30h): Message sender is the controller.
'A' (41h): Message type is "Command".
N-N: Message length
'A' (41h): Message type is "Command".
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).
Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h).
Message
STX (02h): Start of Message
'C'-'0'-'0'-'E' (43h, 30h, 30h, 45h): Asset Data writes command
'0'-'0'(30h, 30h): Offset address from top of Asset data.
'C'-'0'-'0'-'E' (43h, 30h, 30h, 45h): Asset Data writes command
'0'-'0'(30h, 30h): Offset address from top of Asset data.
00h : Write data from top of the Asset data area.
Data(0)
–- Data(N): Asset data. The data must be ASCII characters strings.
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5
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'-Monitor ID-'B'-N-N
STX-'0'-'0'-'C'-'0'-'0'-'E'-'0'-'0'-
Data(0)-Data(1)---Data(N)-ETX
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.
'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
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' (34h and 30h).
Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (34h and 30h).
Message
STX (02h): Start of Message
'0'-'0': Result code. No error.
'C'-'0'-'0'-'E' (43h, 30h, 30h, 45h): Asset Data write command
'0'-'0'(30h, 30h): Offset address from top of Asset data.
'0'-'0': Result code. No error.
'C'-'0'-'0'-'E' (43h, 30h, 30h, 45h): Asset Data write command
'0'-'0'(30h, 30h): Offset address from top of Asset data.
00h : Write data into from top of the Asset data area.
Data(0)
–- Data(N): Asset data. The data must be ASCII characters strings.
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5
Refer to the section 4.5
“Check code” for a BCC calculation.
Delimiter