Mitsumi electronic FR-F520-0.75K, 55K Data definitions, Control codes, Ascii Code Description

PARAMETERS

Note: 1. The inverter station numbers may be set between H00 and H1F (stations 0 and 31) in hexadecimal.

2.*3 indicates the control code.

3.*4 indicates the CR or LF code.

When data is transmitted from the computer to the inverter, codes CR (carriage return) and LF (line feed) are automatically set at the end of a data group on some computers. In this case, setting must also be made from the inverter according to the computer.

Also, the presence and absence of the CR and LF codes can be selected using Pr. 124.

4.*5: When Pr. 123 "waiting time setting" ≠ 9999, create the communication request data with no "waiting time" in the data format. (The number of characters decreases by 1.)

2)Reply data from inverter to computer during data write

[No data error detected]

[Data error detected]

*3

Inverter

*3

Inverter

Error

Format C

station

*4

Format D

station

*4

ACK

NAK

number

number

code

1

2 3

4 ← Number of

1

2 3

4

5 ← Number of

characters

characters

3) Reply data from inverter to computer during data read

[No data error detected]

Format E	*3	Inverter	Read data	*3	Sum	*4
		station
	STX			ETX	check
		number

[Data error detected]

Format F

	1		2	3	4	5	6	7	8	9		10	11
Format E'		*3	Inverter		Read		*3		Sum	*4
			station
		STX				data	ETX	check
			number
	1		2	3	4	5	6	7	8	9	←	Number of characters

	*3	Inverter		Error	*4
		station
	NAK			code
		number
1		2	3	4	5

4) Send data from computer to inverter during data read

[No data error detected]							[Data error detected]
	Format G		*3	Inverter			Format H	*3	Inverter
				station		*4			station		*4
			ACK					NAK
				number					number
		1		2	3	4 ←	Number of characters	1	2	3	4 ← Number of characters
(4) Data definitions
1) Control codes
	Signal	ASCII Code					Description
	STX		H02		Start of Text (Start of data)
	ETX		H03		End of Text (End of data)
	ENQ		H05		Enquiry (Communication request)
	ACK		H06		Acknowledge (No data error detected)
	LF		H0A		Line Feed
	CR		H0D		Carriage Return
	NAK		H15		Negative Acknowledge (Data error detected)

2)Inverter station number

Specify the station number of the inverter which communicates with the computer.

3)Instruction code

Specify the processing request (e.g. operation, monitoring) given by the computer to the inverter. Hence, the inverter can be run and monitored in various ways by specifying the instruction code as appropriate. (Refer to page 195)

4)Data

Indicates the data such as frequency and parameters transferred to and from the inverter. The definitions and ranges of set data are determined in accordance with the instruction codes. (Refer to page 195)

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