Abnormal Codes Returned During Communications Using An A-Compatible 1E Frame - Mitsubishi Electric QJ71E71-100 User Manual

16.6.2
Abnormal codes returned during communications using an
A-compatible 1E frame
The following table lists the error codes stored in the abnormal code appended to a response in the A-compatible 1E
frame in MC protocol communications. (An abnormal code is appended only when an end code is 5B
Error code Error
10
PC number error
H
11
Mode error
H
Intelligent function
12
module designation
H
error
18
Remote error
H
1F
Device error
H
20
Link error
H
Intelligent function
21
H
module bus error
312
Response format Subheader
Error description
The PC number specified with a command is
not FF of the own station or not the station
number set with the MELSECNET link
parameters.
After the E71 receives a request from the
connected device normally, communications
cannot be normally performed between the E71
and the CPU module due to some causes such
as noise.
The specified intelligent function module
number has not been assigned to an intelligent
function module that has the buffer memory and
where communications can be performed. (For
example, the specified module is an I/O module
or the specified slot is empty.)
The remote RUN/STOP cannot be executed.
(The remote STOP/PAUSE has been already
executed from another module.)
Invalid device specification
The CPU module of the request destination has
been disconnected from the data link.
Memory access to the intelligent function
module cannot be performed due to the
following causes:
• The control bus to the intelligent function
module is faulty.
• The intelligent function module is in failure.
End code 00
Abnormal code
If an abnormal code is stored,
"5B " is stored here.
H
Change the PC number to FF
station or not the station number set using the
link parameter to perform communications
again.
Perform communications again. If the error
occurs again, check for noise and other causes
and/or replace the E71.
Change the specified data contents in the
control procedure or change the mounting
position of the intelligent function module. Then
perform communications again.
Check if the remote STOP/PAUSE has been
already executed from another module. Then
cancel the operation to perform
communications again.
• Correct the specified device.
• Do not access a device which does not exist.
Check if the CPU module of the station number
set for the PC number has been disconnected.
Then remove the cause of the disconnection to
perform communications again.
There is a hardware problem with the CPU
module, base unit, intelligent function module,
or the E71. Please consult your local Mitsubishi
representative.
.)
H
H
Action
of the own
H