CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 282

• 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

CPU Unit Status Read (Service Code: 40 Hex)
Command Block
Response Block
Parameters
254
Receiving Explicit Messages
Note A body format of either 8 bits or 16 bits is possible.
This PLC Object service reads status details (operation status, operating
mode, fatal and non-fatal errors, etc.) from the CPU Unit.
Service code (command, response): 40 Hex is specified for commands. For
responses, the highest bit will turn ON and C0 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): Always 00 Hex.
Read data (response): The read data is given in the following table. The data
is returned after the service code in the order shown in the table (high to low).
Service Code
Service Code
RUN mode
Fatal error information (L)
Fatal error information (H)
Non-fatal error information (L)
Non-fatal error information (H)
Message exists/does not exist (L)
Message exists/does not exist (H)
Error code (L)
Error code (H)
Error message (16 bytes)
40
C0
• Operation status: Returns the operation status of the CPU Unit in 1-byte
(2-digit) hexadecimal.
The values of bits 3 to 6 are not fixed. Always mask them when address-
ing the status data.
Class ID
(2F)
C4
(*)
Instance ID
Detailed status
Operation Status
00
(*)
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