Rockwell-automation 1784-PM16SE SoftLogix Motion Card Setup and Config Uživatelský manuál stáhnout pdf (Strana 358)

Publication 1784-UM003A-EN-P – June 2003

350 Motion Object Attributes

Position Command

Position Command is the current value of the Fine Command Position into

the position loop summing junction, in configured axis Position Units. Within

the active servo loop, the Position Command value is used to control the

position of the axis.

Position Feedback

Position Feedback is the current value of the Fine Actual Position into the

position loop summing junction, in configured axis Position Units. Within the

servo loop, the Position Feedback represents the current position of the axis.

Aux Position Feedback

Aux Position Feedback is the current value of the position feedback coming

from the auxiliary feedback input.

Position Error

Position Error is the difference, in configured axis Position Units, between the

command and actual positions of a drive axis. For an axis with an active servo

loop, position error is used, along with other error terms, to drive the motor to

the condition where the actual position is equal to the command position.

Position Integrator Error

Position Integrator Error is the running sum of the Position Error, in the

configured axis Position Units, for the specified axis. For an axis with an active

servo loop, the position integrator error is used, along with other error terms,

to drive the motor to the condition where the actual position is equal to the

command position. .