Omron CS1W-DRM21, CJ1W-DRM21 Byte Data Write Service Code 1E Hex, Mal, You are using

Receiving Explicit Messages	Section 6-5
	No of Read Words (command): The number of words of read data is speci-
	fied in 1-byte (2-digit) hexadecimal. The range is 01 to 64 Hex (1 to 100 deci-
	mal).
	No. of bytes received (response): The number of bytes received from the
	destination node address (remote node) 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.
	Read data (response): The specified area, word, and byte data is returned in
	order from word L (low byte: bits 0 to 7) to word H (high byte: bits 8 to 15).
Important Points	The actual address L, address H, and number of write data bytes that can be
	specified depends on the CPU Unit of the CS/CJ-series DeviceNet Unit and
	the Memory Area. Do not exceed the boundary of the data areas for the PC
	you are using.

Byte Data Write (Service Code: 1E Hex)

Byte Data Write writes data to I/O memory area in CPU Units with CS/CJ- series DeviceNet Units mounted. The write word data is in byte units. The command block is specified from high to low bytes, as shown in the following diagram.

Command Block

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

Write data (200 bytes max.)

Response Block

	Service Code
	Destination
	node address
	No. of bytes
	received
Parameters	Destination node address (command): The node address of the CS/CJ-
	series DeviceNet Unit to which to write the data, specified in 1-byte (2 digit)
	hexadecimal.
	Service code (command, response): IE Hex is specified for commands. For
	responses, the highest bit will turn ON and 9E Hex will be returned.
	Class ID (command): Always 002F Hex.

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