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1. Operation State
1.1 Operation State Transition Diagram
II-2
1. Operation State
1.1 Operation State Transition Diagram
The controller 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.
Operation is enabled only in the operating preparation ready state. The operating preparation ready state is
furthermore classified into reset, automatic operation stop, automatic operation start, and automatic
operation pause as shown below:
Manual mode operation is enabled in the operation complete state.
Block stop
Input
Power OFF state
1)
Power OFF
2)
Power ON
Operations not ready state
Waiting for READY ON
Failure in operating preparations
(Emergency stop)
4)
READY ON
4)
Problem is resolved
Operations not ready state
5)
Reset operations
In automatic operations
A
utomatic operation is
stopped
Feed hold
7)
6)
Automatic
operation
is started
A
utomatic operation in
progress
6)8)
A
utomatic
operation
is started
A
utomatic operation is
stopped
6)
Start
M02/30
Reset process
Reset
5)
Finished
process-
ing
A
utomatic
operation
not ready
state
Resolve problem that
caused emergency
stop
5)
Reset operations
CRT operations
(Machinery preparation)
Searching unmodal
Completed
[During operation of the above,
automatic start is not possible.]
3)
Emergency stop
Operation state transition diagram
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 POWER OFF signal is input from the machine;
• When power supplied from the machine to controller is turned OFF; or
• When power unit fuse in the controller blows.