Alarm Message Display; Interface - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function

14.21 Alarm Message Display

14.21 Alarm Message Display
The details of the alarms which occur during the sequence (user PLC) process can be displayed on the setting and display
unit.
Up to four alarm messages can be displayed simultaneously on the alarm diagnosis screen. The maximum message length in
one message is 46 characters.
Format
Max. number of mes-
1024 messages
sages
Max. data length 46 bytes per message
Number of display
Max. 4 messages
messages
F type / R type (supplementary information

Interface

designated)
Available language 8 languages
Store method User PLC attached data
14.21.1 Interface
The alarm message display interface is available in the two types: F type in which temporary memory F is used for message
display request and R type in which file register (R) is used for message display request. Either type is selected by using a
parameter.
 F type interface
This interface applies to 1024 points of temporary memory F0 to F1023.
If temporary memory F is used as the alarm interface, do not use it for another purpose.
1 F0
0 F1
1
F2
1
F3
0
F4
1 F5
1
F1023
The highest priority is assigned to the F0 signal. The message corresponding to Fn set to "1" is fetched from the message
table and displayed in order starting at F0. If no messages are prepared or Fn without prepared message is set to "1", the
message "USER PLC ERROR n" is displayed.
Alarm message
A0000 0th message of message table is displayed (dn1).
A0002 2nd message of message table is displayed (dn2).
A0003 3rd message of message table is displayed (dn3).
A0005 5th message of message table is displayed (dn4).
689 IB-1501668-B