ABB AI835A 3BSE051306R1 Channel output module

Note, however, that the controller works with one > m command at a time. As a consequence, one function may be masked by another. For example, if the function >100000 is followed by >5000, and the distance for deceleration is not sufficient, the second condition will not be met. The controller will attempt to lower the speed to 5000. As an example, consider the following program. #ALT Label for alternative program DP 0,0 Define Position of X and Y axis to be 0 LMXY Define linear mode between X and Y axes.

hanging Feedrate: 

The command VR n allows the feedrate, VS, to be scaled between 0 and 10 with a resolution of .0001. This command takes effect immediately and causes VS to be scaled. VR also applies when the vector speed is specified with the ‘<’ operator. This is a useful feature for feedrate override. VR does not ratio the accelerations. For example, VR .5 results in the specification VS 2000 to be divided in half.

To illustrate the ability to interrogate the motion status, consider the first motion segment of our example, #LMOVE, where the X axis moves toward the point X=5000. Suppose that when X=3000, the controller is interrogated using the command ‘MG _AV’. The returned value will be 3000. The value of _CS, _VPX and _VPY will be zero.

Linear and Circular Interpolation Motion

 The DMC-18x2 allows a long 2-D path consisting of linear and arc segments to be prescribed. Motion along the path is continuous at the chosen vector speed even at transitions between linear and circular segments. The DMC-18x2 performs all the complex computations of linear and circular interpolation, freeing the host PC from this time intensive task. The coordinated motion mode is similar to the linear interpolation mode. Any pair of two axes may be selected for coordinated motion consisting of linear and circular segments. In addition, a third axis can be controlled such that it remains tangent to the motion of the selected pair of axes. Note that only one pair of axes can be specified for coordinated motion at any given time. The command VM m,n,p where ‘m’ and ‘n’ are the coordinated pair and p is the tangent axis (Note: the commas which separate m, n, and p are not necessary). For example, VM XWZ selects the XW axes for coordinated motion and the Z-axis as the tangent.

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