12. Communication Design Examples X0( Starting AC motor drive) Set the AC motor drive to run in reverse when D10 = H22 X1( Stopping AC motor drive) Set M10 to increase frequency Stop AC motor drive when D10 = H1 Reset M10 to stop frequency increasing Reset D2 M1013 M11 M10 M11 Increase the content in D2 with 100 per second (1Hz/sec) until it reaches 50Hz. Maintain the frequency at 50Hz . M0 Execute MODRD instruction M1 Execute the first MODWR instruction M2 Execute the second MODWR instruction M0 Sending request M1 M2 M0 Read master frequency and output frequency of AC motor drive and store them in D1073~D1076.
M1 Set the AC motor drive to run in reverse or stop according to the content in D10 M2 Set the master frequency according to the content in D2 C0 counts once when data receiving is completed. Reset flag M1127. M1127 DVP-PLC Application Examples 12-9 MOV H22 D10 SET M10 MOV H1 D10 RST M10 RST D2 ADD D2 K100 D2 LD>= D2 K5000 LD= C0 K0 LD= C0 K1 LD= C0 K2 LD= C0 K3 RST C0 SET M1122 MODRD K1 H2102 K2 MODWR K1 H2000 D10 MODWR K1 H2001 D2 CNT C0 K10 RST M1127