Operation State; Operation State Transition Diagram; Power Off - Mitsubishi Electric MELDAS C6 Instruction Manual

1. Operation State

1.1 Operation State Transition Diagram

The NC unit operation state changes momentarily according to the program contents or signals from
the operation panel or machine. The controller roughly classifies the operation state into power OFF,
not ready, and ready.
NC operation is enabled only in the operating preparation ready state. The operating preparation
ready state is furthermore classified as shown below.
Manual mode operation is enabled in the operation complete state.
Operations not ready
state
Operations not ready state

1.2 Power OFF

The power OFF state means that no power is supplied to the control circuit.
(1) From any other state to power OFF (transition 1.)
• When the POWER OFF switch of the setting display unit is pressed.
• When POWER OFF signal is input from the machine.
• When power supplied from the machine to NC unit is turned OFF.
Downloaded from ManualsNet.com
1.1 Operation State Transition Diagram
NC power OFF state
Waiting for READY ON
READY ON
5
Reset operations
In automatic operations
Automatic operation
is stopped
Automatic
Feed hold
operation
7 6
is started
Automatic operation
in progress
Block
Automatic
stop
operation
8 6
is started
Automatic operation is
stopped
search engine
1. Operation State
1
NC power OFF
2 NC power ON
Failure in operating preparations
(Emergency stop)
4 4 Problem is resolved
Reset process
Finished
Reset
processing
5
Start
6
M02/M30
During operation of the above, automatic start is not possible.
II - 2
3 Emergency stop
Resolve problem that
caused emergency stop
5
Reset operations
Screen operations
Input
(Machinig preparation)
Unmodal searching
completed