Precautions - Mitsubishi Electric M800VW Series Manual

M800V/M80V Series PLC Development Manual
5 Peripheral Development Environment (GX Works2)
5.8 PLC Message Development

5.8.7.3 Precautions

This subsection describes the number of characters, the considerations on the number, handling of the information outside
the settings and of the information outside the formats.
(1) Maximum values of message data
This table lists the maximum values of message that can be written.
Message type
Alarm messages
Operator messages
PLC switch
Comment
Even though a message data exceeds the maximum message length, no error occurs. The excessive characters are not
displayed.
When the maximum number of messages is exceeded: an error occurs when written.
Note
 A two-byte data in a message text is counted as 2 characters.
(2) When message cannot be described on one line
In GX Works2, up to 64 characters can be input as line statement in one line. Since this includes information other than
message texts (e.g. message type code, index number, data register number), a message text consisting of 60 charac-
ters cannot be described in one line.
By dividing a line into two using backslash (\) as the last character of the line, the description of 60 characters become
possible.
^ 0 , 1 , 1 0 0 0, O p e r at o r M ess a g e . . . . 01 2 3 4 5 67 8 9 0 1 234 5 6 7 8 9 0 1 23 4 5 6 7 89 0 1 2 3 456 7 8 9
^ 0 , 1 , 1 0 0 0, ¥
^ O p e r a t o r M e s s ag e . . . .01 2 3 4 5 6 7 8 90 1 2 3 4 56 7 8 9 0 123 4 5 6 7 8 9 0 12 3 4 5 6 78 9
Note
 If the first character of the second line is an asterisk (*) when a line is divided into two, 60 characters cannot be
described.
In this case, use another character like space instead.
(3) When created multiple message data have the same index No. or switch No.
When multiple message data include the same index No. or switch No. in a message file, the message data closest to the
END instruction is displayed.
(4) When dealing with multi-language message
When the language used to describe message data is different from the region setting on Windows, characters will cor-
rupt when written to the CNC, and cannot be read properly by a built-in edit function. To avoid this issue, change the
region setting on Windows to the one appropriate for the language used to describe message data, before reading mes-
sage data in the CSV format to GX Works2. Refer to "5.17.3 Multi-language Data" for details.
Maximum message length Maximum number of messag-
(number of characters)
46 bytes
60 bytes
14 bytes
60 bytes
Section exceeding 64 characters, which cannot be described
Use the backslash character to divide into two lines
183
es
1024
512
96
100
IB-1501614-B