Omron CJ1W-DRM21 Word Data Write Service Code 1F Hex, Data areas for the PC you are using

Receiving Explicit Messages			Section 6-5
	Instance ID (command): The type of memory area to which the data will be
	written is specified in hexadecimal as shown in the following table.
	Instance ID (Hex)	CPU Unit memory area	Word range
		for write
	01	CIO	0000 to 6143
	03	DM	D00000 to D32767
	04	WR	W000 to W511
	05	HR	H000 to H511
	08 to 14	EM, banks 0 to C	En_00000 to En_32767
			(n: 0 to C)
	Address L, Address H (command): The address of the first word to which
	the data will be written is specified in hexadecimal as shown below.
	Address L: The lower 2 digits when the first word address is displayed in 4-
	digit hexadecimal.
	Address H: The higher 2 digits when the first word address is displayed in 4-
	digit hexadecimal.
	Write data (response): The specified area and write data is returned in order
	from word H (higher byte: bits 8 to 15) to word L (lower byte: bits 0 to 7). If an
	odd number is specified, the last 1 byte of data will be written to word H.
	No. of bytes received (response): The number of bytes received from the
	destination node address (remote node) onwards is returned in hexadecimal.
	Destination node address (response): The node address of the CS/CJ-
	series DeviceNet Unit that returned the response is returned in hexadecimal.
Important Points	The actual address L, address H, and number of write data words that can be
	specified depends on the type of CPU Unit with CS/CJ-series DeviceNet Unit
	mounted and the type of memory area. Do not exceed the boundary of the
	data areas for the PC you are using.

Word Data Write (Service Code: 1F Hex)

Word Data Write writes data to any I/O memory area in CPU Units with CS/ CJ-series DeviceNet Units mounted. The write word data is in word units. The response block is returned from low to high bytes.

Command Block

Class ID		Word data L	Word data L
	Instance ID
Service Code
	Address L	Word data H	Word data H
Destination node address	Address H

Write data (200 bytes max.)

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