NEC RS-232C user manual Set parameter

These bytes indicate a result of the requested commands as follows,

00h: No Error.

01h: Unsupported operation with this monitor or unsupported operation under current condition.

This result code from the monitor is			encoded to ASCII characters.
Ex.) The	byte data 01h	is encoded to	ASCII character '0' and '1' (30h and 31h).
4th–5thbytes) OP code page: Operation code page.
These bytes indicate a replying item's OP code page.
This returned value from the monitor			is encoded to ASCII characters.
Ex.) The	byte data 02h	is encoded to	ASCII character '0' and '2' (30h and 32h).
Refer to	the operation	code table.
6th –7thbytes) OP code: Operation code
These bytes indicate a		replying item's OP code.
This returned value from the monitor			is encoded to ASCII characters.
Refer to	the operation	code table.
Ex.) The	byte data 1Ah	is encoded to	ASCII character '1' and 'A' (31h and 41h).

8th -9thbytes) Type: Operation type code 00h: Set parameter

01h: Momentary

Like the Auto Setup function which automatically changes the parameter. This returned value from the monitor is encoded to ASCII characters.

Ex.) The byte data 01h is encoded to ASCII character '0' and '1' (30h and 31h). 10th-13thbytes) Max. value: Maximum value which monitor can accept. (16bits)

This returned value from the monitor is encoded to ASCII characters.

Ex.) '0','1','2' and '3' means 0123h (291)

14th -17thbytes) Current Value: (16bits)

This returned value from the monitor is encoded to ASCII characters.

Ex.) '0','1','2' and '3' means 0123h (291)

18thbyte) ETX: End of Message

ASCII ETX (03h)

5.3 Set parameter

STX	OP	code page		OP code			Set Value			ETX
	Hi		Lo	Hi	Lo	MSB			LSB
1st		2nd-	3rd	4th	-5th			6th-9th		10th

Send this message to change monitor’s adjustment and so on.

The controller requests a monitor to change value.

1stbyte) STX: Start of Message

ASCII STX (02h)

2nd-3rdbytes) OP code page: Operation code page

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