Hmi vfd modbus communication
- 1. HMI – VFD MODBUS Drive: Delta VFD M Series Communication HMI: Delta B Series (DOP-BO7s411) nfiLearning Made Easy www.nfiautomation.org 10010 11011
- 2. What is MODBUS ? MODBUS is the serial communication between various devices. It Read/Write the memory addresses directly ASCII Mode Baud Rate: 9600 Parity: Even Data Length: 7 Stop Bit: 1 nfiLearning Made Easy
- 3. STEPS TO LINK VFD AND HMI VIA MODBUS nfiLearning Made Easy
- 4. Step 1: Wire the VFD and HMI MODBUS is the serial communication between various devices. It Read/Write the memory addresses directly ASCII Mode Baud Rate: 9600 Parity: Even Data Length: 7 Stop Bit: 1 PIN WIRING Inverter HMI PIN 4 (+) 1 3 (-) 6 nfiLearning Made Easy
- 5. ASCII Mode Parity: Even Data Length: 7 Stop Bit: 1 Source of Frequency Command : RS 485 (Pr. 00 - 3) Source of Operation Command : RS 485 (Pr. 01 - 3) (Parameter 92 – 01) Baud Rate: 9600 (Parameter 89 – 01) nfiLearning Made Easy Step 2 Configuring VFD with Communication Parameters
- 6. Step 3 Configuring HMI with Communication Parameters Steps to follow: 1. Start a new project in DOP Soft 2. Select your HMI Model and click NEXT 3. Enter the parameters as shown in the figure 4. Click Finish nfiLearning Made Easy
- 7. Step 4 Create Constant elements in HMI Software for ON/OFF Now we have to create some constant elements & Slider in HMI to Read/Write the values directly in VFD Memory registers. How to create Constant? Navigate to Elements – Button – Set Constant Sample Screen nfiLearning Made Easy
- 8. Understanding Memory addresses of the VFD Following image shows general memory addresses of VFD for MODBUS operation via the constant we created in HMI. MODBUS ADDRESSES READ/WRITE VALUES nfiLearning Made Easy Find more addresses in VFD manual
- 9. Example: VFD Operation 2000H - Calibrated Values: Following are the calibrated values you can use in the constant elements you created in HMI 0 0 0 0 0 1 K1 Stop 0 0 0 0 1 0 k2 RUN 0 0 0 0 1 1 k3 JOG 0 1 0 0 0 0 k16 FWD 1 0 0 0 0 0 K3 2 REV 1 1 0 0 0 0 k48 Toggle Direction 0 1 0 0 1 0 k18 FWD RUN 1 0 0 0 1 0 K3 4 REV RUN b5 b4 b3 b2 b1 b0 D Function nfiLearning Made Easy
- 10. Step 5 Write address in constants elements Constant Element {Link2}1@INVERTER-2000 VFD ADDRESS for OperationHMI Link nfiLearning Made Easy
- 11. Step 6 Memory addresses for VFD Frequency Following image shows general memory addresses of Frequency Command of VFD MODBUS ADDRES S READ/WRITE VALUES nfiLearning Made Easy
- 12. Step 7 Linking Freq. Command address to Slider Element Following images show the general memory addresses of Frequency Command (0 ~ 50Hz) of VFD H2001 = Frequency Command 1 = 0.01 Hz 5000 = 50 Hz nfiLearning Made Easy
- 13. {Link2}1@INVERTER-2104 Meter Element Following images show the memory addresses of Output Current of VFD Step 8 Reading the output current from VFD Double Click on the element to access properties nfiLearning Made Easy
- 14. {Link2}1@INVERTER-2106 Meter Element Following images show the memory addresses of Output Voltage of VFD Step 9 Reading the output voltage from VFD Double Click on the element to access properties nfiLearning Made Easy