Hitachi SJ700-2 instruction manual STX 0101000500 BCC CR 0230 3130 3130 30 30 35 30 3030 350D

Conversion into ASCII format

Conversion into ASCII format

Conversion into ASCII format

Chapter 4 Explanation of Functions

The commands are described below.

(i)00 command: This command instructs the inverter to drive the motor (for forward or reverse rotation) or stop the motor. (To use this command, set "A002" to "03" [RS485].)

-Transmission frame Frame format

STX

Station No.

Command

Data

BCC

CR

	Description	Data size	Setting
STX	Control code (Start of TeXt)	1 byte	STX (0x02)
Station No.	Station number of control-target	2 bytes	01 to 32, or FF (broadcast to all stations)
	inverter
Command	Command to be transmitted	2 bytes	00
Data	Data to be transmitted	1 byte	See Note 1.
BCC	Block check code	2 bytes	XOR of the items from "Station No." to "Data."
			See Item (3) of this section.
CR	Control code (Carriage Return)	1 byte	CR (0x0D)
Note 1:
Data	Description		Remarks
0	Stop command
1	Forward rotation command
2	Reverse rotation command

(Example) When sending a forward rotation command to the inverter with station No. 01:

(STX) 01001 (BCC) (CR) Conversion into ASCII format 0230 3130 303133 300D - Response frame

Positive response: See Item (2)-(i) of this section.

Negative response: See Item (2)-(ii) of this section.

(ii)01 command: This command sets the inverter output frequency. (To use this command, set "A001" to "03" [RS485].)

-Transmission frame Frame format

STX

Station No.

Command

Data

BCC

CR

	Description	Data size	Setting
STX	Control code (Start of TeXt)	1 byte	STX (0x02)
Station No.	Station number of control-target	2 bytes	01 to 32, or FF (broadcast to all stations)
	inverter
Command	Command to be transmitted	2 bytes	01
Data	Data to be sent (decimal ASCII	6 bytes	See Note 2.
	code)
BCC	Block check code	2 bytes	XOR of the items from "Station No." to "Data."
			See Item (3) of this section.
CR	Control code (Carriage Return)	1 byte	CR (0x0D)

Note 2: For example, to set the output frequency of the inverter with station No. 01 to 5 Hz, the data is as follows:

(STX) 0101000500 (BCC) (CR) 0230 3130 3130 30 30 35 30 3030 350D

Note 3: The data indicates a value 100 times as large as the actual frequency value to be set.

(Example) 5 (Hz) → 500 → 000500 30 30 30 35 30 30

Note 4: When using the data as the feedback data for PID control, set the most-significant byte to "1".

(Example) 5 (%) → 500 → 100500 31 30 30 35 30 30

- Response frame

Positive response: See Item (2)-(i) of this section.

Negative response: See Item (2)-(ii) of this section.

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