CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 284

• 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

Byte Data Read (Service Code: 1C Hex)
Command Block
Response Block
Parameters
256
Receiving Explicit Messages
Note A body format of either 8 bits or 16 bits is possible.
Byte Data Read reads any I/O memory area data in a CPU Unit. The read
word data is in byte units. The response block data is returned in low-to-high
byte order.
Service code (command, response): 1C Hex is specified for commands.
For responses, the highest bit will turn ON and 9C Hex will be returned.
Service Code
Service Code
1C
• Message Exists/Does Not Exist: When the MSG instruction is executed
• Error Code: The highest priority error code of the errors existing when
• Error Messages: If the above error codes have occurred when FAL/FALS
Message No. 7 (1: exists; 0: does not exist)
by the CPU Unit, the bit corresponding to the message number will turn
ON and be returned in 2 bytes (from low to high bytes).
the command is executed will be returned in 2-byte decimal (from low to
high bytes). If there are no errors, the error code will be 0000.
Note For information on the severity of error codes, refer to the CS1 Series
instructions are executed with registered messages, those messages are
returned in 16-byte ASCII. If there are no registered messages or if the
error codes have not occurred due to execution of FAL/FALS instructions,
the code is returned in ASCII with 20 Hex (space) in 16 bytes.
Class ID Address L
9C
Word data H
(2F)
Message No. 6 (1: exists; 0: does not exist)
C4
(*)
Instance ID
Message No. 5 (1: exists; 0: does not exist)
CPU Unit Operation Manual (W339) or the CJ Series CPU Unit Op-
eration Manual (W393).
(*)
Message No. 4 (1: exists; 0: does not exist)
Read data (200 bytes max.)
Word data L
Message No. 3 (1: exists; 0: does not exist)
Message No. 2 (1: exists; 0: does not exist)
Address H
Message No. 1 (1: exists; 0: does not exist)
No. of bytes read
Message No. 0 (1: exists; 0: does not exist)
Word data H
Word data L
The class ID depends on the unit version.
Version 2.0 or later: The class ID is C4.
Version 1.0: The class ID is 2F.
Section 9-2