Error Codes - Mitsubishi Electric MELSEC iQ-R Series User Manual

4.7

Error Codes

The remote head module stores the corresponding error code in the special register (SD) upon detection of an error using the
self-diagnostic function. If an error occurs when the data communications are requested from the engineering tool, intelligent
function module, or network system connected, the remote head module returns the corresponding error code to the request
source. The error details and cause can be identified by checking the error code. The error code can be checked in either of
the following ways.
• Module diagnostics in the engineering tool ( Page 87 Troubleshooting Procedure)
• Special register ('Latest self-diagnostic error code' (SD0), 'Self-diagnostic error number' (SD10 to SD25) ( Page 148
List of Special Register (SD) Areas)
This section describes errors that may occur in the remote head module and actions to be taken for the errors.
Error code system
All error codes are given in hexadecimal format (4 digits) (16-bit unsigned integer). The type of error includes the error, which
is detected through the self-diagnostic function of each module, and the common error, which is detected during
communication between modules. The following table lists the error detection type and the error code ranges.
Error detection type
Detection by the self-diagnostic
function of each module
Detected during communication
between modules
Detailed information
Upon detection of an error by the self-diagnostic function, the detailed information of the error cause is stored together with an
error code. The detailed information can be checked using the engineering tool. The following detailed information is added to
each error code. (Up to two types of information are stored for each error code. The types differ depending on error code.)
Detailed information 1 and 2 for the latest error code(s) can also be checked with the special register (SD). ( Page 148
List of Special Register (SD) Areas)
Detailed information Item
Detailed information 1 Drive/file information
Parameter information
System configuration information
Frequency information
Failure information
System switching information
Detailed information 2 Drive/file information
Parameter information
System configuration information
Range Description
1000H to 3FFFH Error specific to each module, such as self-diagnostic errors
4000H to 4FFFH Error in the CPU module or remote head module
7000H to 7FFFH Error in the serial communication module
B000H to BFFFH Error in the CC-Link module
C000H to CFFFH Error in the Ethernet-equipped module
D000H to DFFFH Error in the CC-Link IE Field Network module
Description
Information on the corresponding drive name and file name
Information on the parameter, such as parameter storage location and parameter type
Information on the system configuration, such as I/O numbers and power supply numbers
Information on the frequency, such as the number of writes to memory
Information on failures
Information on the system switching
Information on the corresponding drive name and file name
Information on the parameter, such as parameter storage location and parameter type
Information on the system configuration, such as I/O numbers and power supply numbers
4 TROUBLESHOOTING
105
4.7 Error Codes
4