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7. Device control
148
Festo P.BE-CMMP-CO-SW-EN 0708NH
Bit 0
is_referenced
The bit is set when the controller is referenced. This is the case
when either a homing run has been successfully performed or
when no homing run is necessary due to the connected encoder
system (e.g. with an absolute value encoder).
Bit 1
commutation_valid
The bit is set when the commutation information is referenced.
It is especially helpful with encoder systems without
commutation information (e.g. linear motors), since there the
automatic commutation process can take some time. If this bit
is monitored, a timeout of the controller with controller enable
can be prevented, for example.
Bit 2
ready_for_enable
The bit is set when all conditions are present to enable the
controller and only the controller enable itself is missing.
The following conditions must exist:
-
The drive is error-free
-
The intermediate circuit is charged
-
The angle encoder evaluation is ready. No processes are
active (e.g. serial transmission) that prevent an enable.
-
No blocking process is active (e.g. the automatic motor
parameter identification).
With the help of the objects manufacturer_status_masks and manufacturer_status_invert,
one or more bits of the manufacturer_statuswords in bit 14 (manufacturer_ statusbit) of
the statusword (6041
h
) can be shown. All bits of the manufacturer_ statusword_1 can be
inverted through the corresponding bit in manufacturer_status_invert_1. As a result, bits
in the "reset" condition can also be monitored. After inversion, the bits are masked, that
is, the bit is evaluated further only when the corresponding bit in manufacturer_status_
mask_1 is set. If at least one bit is set after masking, bit 14 of the statusword is also set.
The following illustration shows this as an example:
Содержание CMMP Series
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