Mitsubishi MELSEC Q Series Reference Manual page 444

(7) Complete code
(8) Abnormal code
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The result of processing when an external device reads/writes data from/to the
target programmable controller station is indicated by the following values.
00
H
Other than 00
H
(a) When communicating in binary code, the complete code is expressed in
binary values.
(b) When communicating in ASCII code, the complete code is expressed in
hexadecimal ASCII code.
(c) When the complete code indicates abnormal completion, check the content
and take an action according to the troubleshooting section of the Ethernet
User's Manual (Basic).
When the complete code is 5B
included immediately after.
This value indicates the nature of the error when the processing result of
reading/writing data from/to the target programmable controller station by an
external device is faulty and the complete code is 5B
(a) When communicating in binary code, the abnormal code is expressed in
binary values.
(b) When communicating in ASCII code, the abnormal code is expressed in
hexadecimal ASCII code. (If the abnormal code is a 2-byte code, the lower
byte is sent/received first and next the upper byte.)
(c) Check the content and take an action according to the troubleshooting
section of the Ethernet User's Manual (Basic).
POINT
The data code (ASCII/binary) when sending/receiving commands and responses
between the E71 and an external device is determined in the operation setting
parameter.
The external device communicating with the E71 should send the values specified
in each data item in the commands and responses in the above setting using the
code shown below. Also, it should receive the corresponding values in the code
shown below.
In the explanation hereafter in this section, the values specified in each item in a
command and response are shown in binary values.
(1) Communication in binary code
Unless specifically stated, the value shown in each explanation is
sent/received in the designated order (L to H) since it is in binary.
(2) Communication in ASCII code
Unless specifically stated, the value shown in each explanation is converted
to hexadecimal ASCII code and sent/received in the designated order (H to
L).
6 WHEN COMMUNICATING USING THE A COMPATIBLE 1E FRAMES
: Normal completion
: Abnormal completion
/"5B", the data of the abnormal code are
H
/"5B".
H
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