DVP-ES3 Series Programming Manual 4. Use S 3 to select the zero return mode. The function code is set by the two high and low16-bit parameters. See the following table for details. _6 6-780 Functions Code Explanation High Low 16-bit 16-bit Leaves the zero point in the negative direction and then stops (Mode 0) 0 0 When the instruction is executed, the search for the zero point is in the negative direction with the target frequency. When the zero point is ON (the zero point signal changes from OFF to ON), the frequency is decreased to the JOG speed and the motion in the negative direction continues, and does not stop until the zero point signal changes from ON to OFF.
Leaves the zero point in the positive direction and then stops (Mode 1) 0 1 When the instruction is executed, the search for the zero point is in the negative direction with the target frequency. When the zero point is ON (the zero point signal changes from OFF to ON), the frequency decreases to 0 immediately, and then the motion is in the positive direction at the JOG speed, and does not stop until the zero point signal changes from ON to OFF. Mode 0 Moves again after returning to the zero point Number of pulses for motion 2 Returning to the zero point is the same as that for the low 16-bit code. After the zero point is ON, the motion continues according to the number of specified pulses.
When the high 16-bit code is a positive number, the search is in the positive direction. A negative value means that the search is in the negative direction. Mode 0 Searches Z phase after returning to the zero point (Z phase input point is set in HWCONFIG ) Number of Z phases 3 Returning to the zero point is the same as that for the low 16-bit code. After returning to the zero point, the motion continues according to the number of Z phases. When the high 16-bit code is a positive number, the search is in the positive direction. A negative value indicates that the search is in the negative direction.
Suppose you specified that the rising-edge trigger of X0 as the condition for the Z phase input in HWCONFIG. The counting is performed once whenever the rising-edge trigger for X0 occurs. Mode 0 Outputs the clear signal after returning to the zero point. (Output clear point is set in HWCONFIG ) Number of pulses for motion or number of Z phases 4+0=4 4+1=5 4+2=6 4+3=7 (bit 2=ON) Choosing a value between 4–7 means selecting the functions codes 0–3 respectively, and the specified output point sends an ON signal that is about 20ms wide when the function execution completes. The range of the output point is Y14–Y17 and Y20–Y27.
For example, if you specify Y22 as the output point in HWCONFIG, it indicates Y22 is for the output of clear signals. Leaves the zero point in the positive direction and then stops (Mode 1) 0 8+0=8 8+1=9 (bit 3=ON) The operation for zero point return is the same as that for code 1 (mode 1).