There are foreign exchange data interfaces on the websites of major banks. There are also special websites that can help make them. But there is a charge.

1, main requirements of general interface: 1. Use MT4 free market software to obtain historical and real-time market data. 2. I can accurately and quickly download historical data to my own analysis software, and at the same time, real-time market data can also be received synchronously by my own analysis software. 3. The data source of my current analysis software is provided by the data interface of Forever Financial Express, so I'd better refer to the data specification of this interface. 4. Make sure that my analysis software can receive the market data provided by the data interface and the analysis software can work normally. .

2. The method of free interface is to look at the communication settings of WINCCFLEXIBLE. Now computer simulation and PLC are connected through PPI, so the communication setting should be set to PPI mode (instead of communication bus mode between touch screen and PLC). I hope it helps. I only used 300 PLC to connect with WINCCFLEXIBLE.

3. If the country has corresponding laws and regulations on foreign exchange interfaces, it hopes to use them in compliance with the regulations.