Mitsubishi FR - S500 Data definitions, Send data from computer to inverter during data read

4) Send data from computer to inverter during data read

[No data error detected]					[Data error detected]
(May be omitted)
Format G		*3	Inverter	*4		Format H		*3	Inverter	*4
		ACK	station					NAK	station
			number		Number				number
	1		2 3	4			1		2 3	4
					of

characters

Number

of

characters

REMARKS

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

•*3 indicates the control code.

•*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 on the inverter according to the computer.

Also, the presence and absence of the CR and LF codes can be selected using n11.

•At *5, when communication parameter n7 "waiting time setting" ≠ - - -, create the communication request data without "waiting time" in the data format.

(The number of characters is decremented by 1.)

(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 177.)

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 177.)

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