6. Data Transmission and Comparison Design Examples Control Program: X1 X2 X3 X4 M0 M1 M2 Controlling the frequency of AC motor drive through RS485 communication format M3 ( Part of the whole program) program Description: z When X1 = ON, K0 will be sent to D10~D13. The output frequency of ACMD will be 0Hz. z When X2 = ON, K3000 will be sent to D10~D13. The output frequency of ACMD will be 30Hz. z When X3 =ON, K4000 will be sent to D10~D13. The output frequency of ACMD will be 40Hz. z When X4 = ON, K5000 will be sent to D10~D13. The output frequency of ACMD will be z The program applies MODWR instructions to set output frequency of ACMDs through 50Hz. RS485 communication.
Please note that the 4 MODWR instructions cannot be executed at the same time due to a possible conflict in communication. For examples of multiple communication, please refer to Chapter 12 – Communication Design Examples. 6-6 DVP-PLC Application Examples FMOV K0 D10 K4 FMOV K3000 D10 K4 FMOV K4000 D10 K4 FMOV K5000 D10 K4 MODWR K1 H2001 D10 MODWR K2 H2001 D11 MODWR K3 H2001 D12 MODWR K4 H2001 D13