Hitachi X200 Series instruction manual 15, Write in Coils 0Fh

B−15

Write in Coils [0Fh]:

This function writes data in consecutive coils. An example follows:

•Change the state of intelligent input terminal [1] to [5] of an inverter having a slave address “8.”

•This example assumes the intelligent input terminals have terminal states listed below.

Item			Data
Intelligent input terminal	[1]	[2]	[3]	[4]	[5]
Coil Number	7	8	9	10	11
Terminal status	ON	ON	ON	OFF	ON

Appendix B

Query:

No.	Field Name	Example
		(Hex)
1	Slave address *1	08
2	Function code	0F
3	Coil start address *3	00
	(high order)
4	Coil start address *3	06
	(low order)
5	Number of coils	00
	(high order)
6	Number of coils	05
	(low order)
7	Byte number *2	02
8	Change data	17
	(high order)
9	Change data	00
	(low order)
10	CRC-16 (high order)	83
11	CRC-16 (low order)	EA

Response:

No.	Field Name	Example
		(Hex)
1	Slave address	08
2	Function code	0F
3	Coil start address *3	00
	(high order)
4	Coil start address *3	06
	(low order)
5	Number of coils	00
	(high order)
6	Number of coils	05
	(low order)
7	CRC-16 (high order)	75
8	CRC-16 (low order)	50

Note 1: Broadcasting is disabled.

Note 2: The change data is a set of high-order data and low-order data. So when the size (in bytes) of data to be changed is an odd start coil number (“7”), add “1” to the data size (in bytes) to make it an even number.

Note 3: The PDU Coils are addressed starting at zero. Therefore coils numbered 1-31 are addressed as 0-30. Coil address value (transmitted on Modbus line) is 1 less than the Coil Number.