Mitsubishi Electric MELDAS C6 Interface Manual page 130

[Related signals]
(1) Tool change reset (TRST: Y78C)
(2) Tool function strobe 1 (TF1: X650)
(3) In tool life management (TLFO: X62B)
(4) New tool change (TCRQ: X64C)
(5) Tool life management group (R238)
(6) Tool life usage data (R244, 245)
B con-
Signal name
tact
ALARM 3
—
(PROGRAM ERROR)
[Function]
This signal informs that the controller is in program error condition.
[Operation]
This type of alarm occurs during automatic operation in memory or MDI mode, mainly due to use of
faulty machining program, or program incompatible with the controller specifications.
Some typical examples of program error are shown below.
Instruction Manual.
(1) Illegal address (address not covered by the specifications is used)
(2) Absence of F command
(3) Arc end point excessive deviation
(4) Return incomplete axis found (a motion command was issued to an axis that has not completed
reference point return)
(5) Program end error (M02 or M30 command is not inserted or reset & rewind process has not
been performed)
B con-
Signal name
tact
ALARM 4
—
(OPERATION ERROR)
[Function]
This signal informs that the controller is in operation error condition.
[Operation]
The signal turns ON in case of operation alarm, and OFF when the alarm condition is removed.
Some typical examples of operation errors are shown below:
For details, refer to the relevant Instruction Manual.
(1) Hardware axis motion stroke end
(2) Software axis motion stroke end
(3) No operation mode set
(4) Cutting feedrate override set to "zero"
(5) Manual feedrate zero
(6) External interlock axis found
(7) Warning regarding absolute position detection
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
AL3
Signal
abbreviation
AL4
6-1-41
1st system 2nd system
X632 X6B2
For details, refer to the relevant
1st system 2nd system
X633 X6B3
3rd system
X732
3rd system
X733