Hitachi SJ700-2 Coil status, Updating data upper digit FFh, Updating data lower digit, Query

Chapter 4 Explanation of Functions

(iii)Writing data to a specified coil [05h] This function writes data to a specified coil

The following table shows the updating of the coil status.

	Coil status
	OFF→ON	ON→OFF
Updating data (upper digit)	FFh	00h
Updating data (lower digit)	00h	00h

(Example)

When sending an operation command to the inverter at slave address "10":

To start the inverter operation, "03" must be set in parameter "A002". Coil 1 is used to turn on an operation command.

Query				Response
		Field name	Sample setting		Field name	Sample setting
			(hexadecimal)	1	Slave address	(hexadecimal)
	1	Slave address (*1)	0A			0A
	2	Function code	05	2	Function code	05
	3	Starting coil number	00	3	Starting coil number (upper	00
		(upper digit) (*2)		4	digit)
	4	Starting coil number	00		Starting coil number (lower	00
		(lower digit) (*2)		5	digit)
	5	Updating data (upper digit)	FF		Updating data (upper digit)	FF
	6	Updating data (lower digit)	00	6	Updating data (lower digit)	00
	7	CRC-16 code (upper digit)	8D	7	CRC-16 code (upper digit)	8D
	8	CRC-16 code (lower digit)	41	8	CRC-16 code (lower digit)	41

*1 If this query is broadcasted, no inverter will return any response.

*2 Note that the starting coil number is 1 less than the actual coil number of the coil to be read first.

If the function to write data to a coil cannot be executed normally, the inverter will return an exception response. For details, see Item (viii), "Exception response."

(iv)Writing data to a specified register [06h] This function writes data to a specified register.

(Example)

When setting "50 Hz" as the base frequency setting (A003) in the inverter at slave address "5":

Since register "1203h" to store the base frequency setting (A003) has a data resolution of 1 Hz, specify "50" (0032h) as the updating data to set "50 Hz".

Query				Response
		Field name	Sample setting		Field name	Sample setting
			(hexadecimal)	1	Slave address	(hexadecimal)
	1	Slave address (*1)	05			05
	2	Function code	06	2	Function code	06
	3	Starting register number	12	3	Starting register number	12
		(upper digit) (*2)		4	(upper digit)
	4	Starting register number	02		Starting register number	02
		(lower digit) (*2)		5	(lower digit)
	5	Updating data (upper digit)	00		Updating data (upper digit)	00
	6	Updating data (lower digit)	32	6	Updating data (lower digit)	32
	7	CRC-16 code (upper digit)	AD	7	CRC-16 code (upper digit)	AD
	8	CRC-16 code (lower digit)	23	8	CRC-16 code (lower digit)	23

*1 If this query is broadcasted, no inverter will return any response.

*2 Note that the starting coil number is 1 less than the actual coil number of the coil to be read first.

If the function to write data to a specified register cannot be executed normally, the inverter will return an exception response. For details, see Item (viii), "Exception response."

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