Mitsubishi Electric MELSEC-L SERIES Basic User Manual page 271

Error
Error description
code
• When "ASCII Code" has been
selected in the communication data
code setting in the Ethernet operation
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setting, ASCII code data which cannot
be converted into binary code data has
been sent from the connected device.
• When "Enable Online Change" was
disabled (or not selected) in the
Ethernet operation setting, the
connected device requested a data
write while the CPU module was
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H
running.
• While the CPU module was running,
the connected device requested for
writing a parameter, program, or
microcomputer program.
• The connected device specified a
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wrong device.
Action
MC protocol
communications
• Check and correct the
data sent from the
connected device.
• Enable (select)
"Enable Online
Change" in the
Ethernet operation
setting and write data.
(However, a
parameter, program,
or microcomputer
program cannot be
written while the CPU
module is running.)
• Set the switch on the
CPU module to STOP
and write the data.
• Correct the device
specification.
CHAPTER 16 TROUBLESHOOTING
Data communication type
Communications
using a fixed
buffer
 


Communications
using a random
access buffer

16
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