Manual PD4-C (USB)
9 Operating modes
Version: 1.4.1 / 22.07.2016 / FIR-v1626
38
See the figure in "Setting move commands".
CAUTION
The bit 9 in the controlword will get ignored, when the velocity will fell below in the target set point. In
this case the controller would need to back up and take a run-up to reach the target.
Status word
The following bits in object 6041
(status word) have a special function:
•
Bit 10: Target reached: This bit is set to "1" when the last target was reached and the motor is idling
for a specified time (6068
h
) within a tolerance window (6067
h
).
•
Bit 12 (set-point acknowledge): This bit confirms the receipt of a new and valid target position. It is
synchronously set and reset with the "New set-point" bit in the control word.
An exception is if a new travel is started when another travel has not yet been completed and the
next travel should only be carried out after the end of the first travel. In this case, the bit is only reset
when the command has been accepted and the motor controller is ready to carry out new move
commands. If a new travel order is sent although this bit is still set, the latest travel order is ignored.
The bit is not set if one of the following conditions occurs:
•
The new target position can no longer be reached if the marginal conditions are adhered to.
•
A target position has already been moved to and a target position has already been specified. A
new target position cannot be specified until the current positioning has been completed.
•
The new position is outside of the valid range (607D
h
(Software Position Limit)).
•
Bit 13 (Following Error): This bit is set in closed loop mode if the following error is greater than the
set limits is (6065
(Following Error Window) and 6066
h
(Following Error Time Out)).
9.1.3 Setting move commands
Move command
h
(Target Position), the new target position is specified in user units (see "User-defined
units"). Afterwards, the move command is triggered when bit 4 is set in object 6040
h
(control word). If
the target position is valid, the motor controller responds with bit 12 in object 6041
h
(status word) and
begins the positioning run. As soon as the position is reached, bit 10 is set to "1" in the status word.