NEC RS-232C user manual Serial No. & Model Name Read, Serial No. Read

12. Serial No. & Model Name Read

12.1 Serial No. Read

This command is used in order to read a serial number.

1) The controller requests the monitor to read a serial number.

	Header	Message	Check code	Delimiter
SOH-'0'-Monitor ID-'0'-'A'-'0'-'6'		STX-'C'-'2'-'1'-'6'-ETX	BCC	CR
Header
SOH	(01h): Start Of Header
'0'	(30h): Reserved

Monitor ID: Specify the Monitor ID which you want to get serial number. 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'-'6' (43h, 32h, 31h, 36h): Serial No. 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 serial No. data to the controller.

Header	Message	Check code	Delimiter
SOH-'0'-'0'-Monitor ID-'B'-N-N	STX-'C'-'3'-'1'-'6'-	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

Note.) The maximum data length that can be returned from 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

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

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

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