Delta Electronics Programmable Logic Controller DVP-PLC User Manual

Page 549

9 Application Instructions API 150-199

DVP-PLC Application Manual

9-77

When the 2-axis synchronous motion instruction is enabled, the start frequency and acceleration/deceleration

time in Y axis will be same as the settings in X axis.

The number of output pulses for the 2-axis motion shall not be less than 59; otherwise the line drawn will not be

straight enough.

There is no limitation on the number of times using the instruction. However, assume CH1 or CH2 output is in

use, the 1

group X/Y axis will not be able to output. If CH3 or CH4 output is in use, the 2

group X/Y axis will

not be able to output.

Program Example:

1. Draw a rhombus as the figure below.

(0, 0)

(-2700 0,-27 000)

(0, -5 5000)

(270 00,-27 000)

2. Steps:

a) Set the four coordinates (0,0), (-27000, -27000), (0, -55000), (27000, -27000) (as the figure above). Calculate the

relative coordinates of the four points and obtain (-27000, -27000), (27000, -28000), (27000, 27000), and (-27000,

27000). Place them in the 32-bit (D200, D202), (D204, D206), (D208, D210), (D212, D214).

b) Write program codes as follows.

c) PLC RUN. Set M0 as On and start the 2-axis line drawing.

D214

M1029

DPPMR

END

D210

DPPMR

D206

DPPMR

K100000

D202

DPPMR

= D0 K1

= D0 K2

= D0 K4

M1029

K100000

3. Motion

explanation:

When PLC RUN and M0 = On, PLC will start the first point-to-point motion by 100KHz. D0 will plus 1 whenever a

point-to-point motion is completed and the second point-to-point motion will start to execute automatically. The

same motion will keep executing until the fourth point-to-point motion is completed.