Filter
Top Products
175
Receiving Explicit Messages Section 6-5
Response Block
Parameters Destination node address (command): The node address of the CS/CJ-
series DeviceNet Unit from which to read data, specified in 1-byte (2 digit)
hexadecimal.
Service code (command, response): IC Hex is specified for commands. For
responses, the highest bit will turn ON and 9C Hex will be returned.
Class ID (command): Always 002F Hex.
Instance ID (command): The memory area that will read the data is specified
in hexadecimal as shown in the following table.
Address L, Address H (command): The address of the first word from which
to read the data is specified in hexadecimal as shown below.
Address L: The lower 2 digits when the first word address is given in 4-digit
hexadecimal.
Address H: The higher 2 digits when the first word address is given in 4-digit
hexadecimal.
No of Read Bytes (command): The number of bytes of read data is specified
in 1-byte (2-digit) hexadecimal. The range is 01 to C8 Hex (1 to 200 decimal).
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 H (high byte: bits 8 to 15) to word L (low byte: bits 0 to 7). If
an odd number is specified for the number of read bytes, the last 1 byte of
data will be read to the high word.
Important Points The actual address L, address H, and number of read bytes that can be spec-
ified depends on the model of the CPU Unit of the CS/CJ-series DeviceNet
Unit and the type of memory area. Do not exceed the boundary of the data
areas for the PC you are using.
No. of bytes
received
Destination
node address
Service
Code
Word data L
Word data L
Word data H
Word data H
Read data (200 bytes max.)
Instance ID (Hex) CPU Unit memory area
for read
Word range
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)