How to use rs485 and plc to realize online modeling in Velcro touch screen programming software?

On-line modeling method based on rs485 and plc in Velcro touch screen programming software;

1. Connect the No.7 pin of Rs485 port of the touch screen and the A port of DTD434MC with a red line. Connect the No.8 pin of Rs485 port of the touch screen with another black line and the B port of DTD434MC.

2. The last bit (K88) in the setting switch of wireless communication terminal is the upward toggle switch.

3. Connect the antenna to the wireless communication terminal.

4. After all wiring is completed, power is supplied to the touch screen and wireless communication terminal.

5. Connect the DB9 port of Siemens dedicated 485 line to Rs485 of S7 1200 extension module CM 124 1.

6. The red and black wires at the other end are connected to terminals A and B of DTD434MC respectively.

7. The last bit (K8-8) in the setting switch of the wireless communication terminal is the upward toggle switch.

8. Connect the antenna to the wireless communication terminal.

9. After all wiring is completed, supply power to PLC and wireless communication terminal.

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