CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 286

• Manufacturer Part Number: CJ1W-EIP21
• Description: Ethernet I/P Module
• Manufacturer: Omron

Specifications of CJ1W-EIP21

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Response Block
Parameters
Important Points
Byte Data Write (Service Code: 1E Hex)
258
Receiving Explicit Messages
Service code (command, response): ID Hex is specified for commands. For
responses, the highest bit will turn ON and 9D Hex will be returned.
Class ID (command): Always C4 (2F).
The class ID depends on the unit version. The class ID is C4 for unit version
2.0 or later, and 2F for unit version 1.0.
Instance ID (command): The type of memory area that will read the data is
specified as shown in the following table.
Address L, Address H (command): The address of the first word to read the
data from 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 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).
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).
The actual address L, address H, and number of write data bytes that can be
specified depends on the model of the CPU Unit, and the data area being
written. Do not exceed the boundary of the data areas for the PLC you are
using.
Byte Data Write writes data to an I/O memory area in a CPU Unit. The write
word data is in byte units. The command block is specified in high-to-low byte
order, as shown in the following diagram.
Service Code
01
03
04
05
08 to 20
Instance ID (Hex)
9D
Word data L
Read data (200 bytes max.)
Word data H
Word data L
CIO
DM
WR
HR
EM, banks 0 to 18
CPU Unit memory area
Word data H
for read
0000 to 6143
D00000 to D32767
W000 to W511
H000 to H1535
En_00000 to En_32767
(n: 0 to 18)
Word range
Section 9-2