This example is an example of the equipment used to connect a Modbubs to Profinet gateway to a Delta inverter, and the equipment used is a Siemens 1200 PLC, a Delta inverter, and a DJI Modbus to Profinet gateway.
1. Modbus to Profinet gateway configuration method: open the Botu, create a new project and add the GSD file.
2. Establish a Profinet connection, set the IP address and device title of the Modbus to Profinet gateway, and keep the IP in the same network segment as the Modbus to Profinet gateway.
3. Enter the Modbus to Profinet gateway device view and select the total data length of the input and output.
4. Increase the selected length from the hardware directory on the right,
5. Download the equipment to the PLC, open the Modbus to Profinet gateway equipment software to equip the modbus parameters, click New, and select PN2MM.
6. Set the IP address and device title of the Modbus to Profinet gateway, which should be consistent with the PLC configuration.
7. Set the 485 parameters of Modbus to Profinet gateway baud rate, data bits, parity and slave to be consistent
8. The response waiting and polling delay requirements are adjusted according to the time distance of the slave equipment, if the slave reply speed is slow, the echo waiting time will be increased, and if the slave replies and requires waiting for a period of time before receiving the next instruction, then the polling delay needs to be increased. Right-click on the Modbus RTU and select the piercing, and click Node in the subordinate menu to fill in the slave station number.
9. Continue to right-click to pierce in
10. Select the required functions according to different needs
11. The following is a customer's transformation site, before the customer used Siemens 200PLC to connect to Delta inverter, now it uses 1200PLC to connect through Modbus to Profinet gateway. The customer's 485 parameter is baud rate 9600 even check 8 data bits and an abort bit, and the output instruction polling mode can be changed to continuous output or seam output according to the requirements of the slave.
12. Note: In the Modbus to Profinet gateway equipment software, if the check digit is not none, the data bit should be selected 9, and the address here can be seen as 16# BC41 (decimal 48193) station address is 1.
13. However, the address of Delta's communication manual is 2000H (8192), which is because the address area of 4XXXX has been added to the Siemens PLC, and because the PLC opening address has the beginning of 40001, the offset is caused. It can be seen that the instruction register address area is 4 area, and the corresponding function code is 06 or 10 (depending on the slave requirements).
14. Fill in the Modbus parameters sequentially,
15. RIGHT-CLICK ON NODE TO SELECT AND STAB IN THE SELECTION, THIS EXAMPLE TAKES THE 06 UTILITY CODE AS AN EXAMPLE.
16. Fill in the slave address, pay attention to write the decimal number and do not need to add the address area.
17. The beginning address of the memory map is 1500 corresponding to the Q address of the PLC, and the corresponding data can be entered to start the abort inverter (note: some equipment data bump bytes will communicate, and the byte AC function can be selected according to the demand).
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