Festo SFC-LAC CO Series, Manual, Page: 308 / 328

C. Object directory DS204 and CI
C−36
Festo P.BE−SFC−LAC−CO−EN en 0708NH
Description of the states
Status Description
A Start" This state is assumed at power−on, on reset or when a reset command
is entered via the field bus. After execution of the startup code, power
to the power section is cut and the status branches to B.
B Not ready to
switchon" In this status logic self−tests are carried out. Internal working
variables are initialized. The mechanical brake is actuated, if fitted.
The power supply to the power section remains cut. The field bus
interface is initialized and communication enabled. The CI is initialized
at the serial interface.
C Switch on disabled" The supply to the power section remains cut. The field bus and/or CI
communication initialized in status B is started, enabling controller
parameters, program records etc. to be modified.
As from this status changes of state are possible only by way of field
bus commands or if a serious error has occurred.
D Ready to switch on" Power to the power section is switched on, power section self−tests
requiring no movement of the axis are carried out. By way of field bus
and/or CI communication controller parameters, program records etc.
can be modified (see also status E).
E Switched on" This status is practically identical to status D. In accordance with
DS402, power to the power section
must be switched on in E,
whereas in D it
may
be switched on.
F Operation enable" The drive waits for positioning tasks and executes them. Normal
operating status after successful initialization.
G Quick stop active" The Quick stop function has been activated. The drive runs as
parametrized (ramp) and then stops. The power section and motor
remain switched on, acceptance of positioning tasks is refused.
H Fault reaction active" This status can be assumed from any situation if a serious error is
detected. The parameterized error response (emergency ramp,
immediate stop etc.) is executed. Communication over the field bus is
maintained, parameter modifications are permitted. The motor
remains switched on.
I Fault" In this status the motor remains switched on, provided the error
which has occurred permits. Otherwise the output stage is disabled
and the mechanical brake is actuated. No more positioning
movements are executed.
Tab.C/5: Description of the states