Mitsubishi Melsec-L Series User Manual page 165

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(2) Confirmation using GX Works2, display unit, or indicator LED of
C24
The following methods are available for confirmation.
"Module's Detailed Information"
screen
"Error History" screen
GX Works2
"Intelligent Function Module
Monitor" screen
Display unit Buffer memory monitor
Indicator LED
ERR LED turns on
of C24
(3) Precautions
The following shows the precautions of reception data in case of errors.
(a) Storing receive data
The receive data for which an error was detected is discarded and only the
normally received data is stored in the C24.
Thus, there may be missing data among the data that has been read to the
CPU module when a reception error occurs.
(b) Reading receive data
When receive data is read to the CPU module by turning the reception
abnormal detection (X4/XB) ON, the data that was normally received prior to
the error detection is read. Read and discard receive data as needed.
10 DATA COMMUNICATION USING THE NONPROCEDURAL PROTOCOL
Item Reference
Chapter 15
Chapter 15
GX Works2 Version1 Operating
Manual
(Intelligent Function Module)
MELSEC-L CPU Module User's
Manual (Function Explanation,
Program Fundamentals)
Chapter 15
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