NEC RS-232C user manual Asset Data write

'B' (42h): Message type is "Command reply"

N-N: Message length

Ex.) The byte data 20h is encoded to ASCII characters '2' and '0' (32h and 30h). Note.) This length includes STX and ETX.

Message

STX (02h): Start of Message

'C'-'1'-'0'-'B' (43h, 31h, 30h, 42h): Asset read reply command

Data(0) – Data(N): Retuned Asset data

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

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'-	BCC	CR
	Data(0)-Data(1)---Data(N)-ETX

Header

SOH (01h): Start Of Header

'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

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'-'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 “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'-	BCC	CR

Data(0)-Data(1)---Data(N)-ETX

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

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