NEC RS-232C user manual Self diagnosis, Self-diagnosis status read

PG-EN: Enable/Disable Schedule data PG: Program No.

'0'-'0'(30h, 30h): Program No.1

'0'-'6'(30h, 36h): Program No.7

EN: Enable /Disable

'0'-'0'(30h, 30h): Disable

'0'-'1'(30h, 31h): Enable

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

4) The monitor replies a data for confirmation.

Header	Message	Check code	Delimiter
SOH-'0'-'0'-Monitor ID-'B'-'0'-'C'	STX-'C'-'3'-'1'-'5'-ST-PG-EN-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.

Ex.) When this byte is set to 'A', the replying Monitor ID is '1'.

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

'0'-'C' (30h, 43h): Message length

Message

STX (02h): Start of Message

'C'-'3'-'1'-'5' (43h, 33h, 31h, 35h): Enable/Disable Schedule writes reply command

ST: Enable/Disable Schedule Status command '0'-'0'(30h, 30h): No error '0'-'1'(30h, 31h): Error

PG-EN: Enable/Disable Schedule data PG: Program No.

'0'-'0'(30h, 30h): Program No.1

'0'-'6'(30h, 36h): Program No.7

EN: Enable /Disable

'0'-'0'(30h, 30h): Disable

'0'-'1'(30h, 31h): Enable

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

11. Self diagnosis

11.1 Self-diagnosis status read

This command is used in order to read the Self-diagnosis status.

1) The controller requests the monitor to read Self-diagnosis status.
Header	Message	Check code	Delimiter
SOH-'0'-Monitor ID-'0'-'A'-'0'-'4'	STX-'B'-'1'-ETX	BCC	CR

Header

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