The public says that there is an advantage. It seems that as long as the opc is OK, it is OK, and it is not so much beneficial to calm.
OPC just provides an interface between vendors, especially between hardware providers and software providers, can fully realize their own products. Everyone is in line with this norm. When you use it, you don't have to consider how to achieve the interconnection of hardware and software, but only how you can implement it, how can you complete the system faster.
Other solutions have not been tasted. If some fieldbus standards can make your hardware devices can be applied quickly by software users, hardware's own DDE programs can also apply the same application. However, OPC application is simple and simple, and OPC comes with distributed applications.
I think the greatest advantage of OPC is to make some non-standard hardware devices of certain vendors can be quickly applied. Due to historical, many companies have some old devices and sell well, but not standard equipment cannot be used by other software or system integrators. For example, a company has a meter of a chlorine content, I want to apply in a system, and his communication agreement is not a standard agreement. What should I do, don't use it, change a manufacturer. If there is an OPC driver, use it, it is too simple. This undoubtedly adds the competitiveness of hardware vendors. OPC has undoubtedly gives hardware vendors a big chance and challenge. In the future applications, if this opportunity is not seized, the relevant hardware vendor path will get the narrower, and finally eliminated. Hardware vendors is the lack of software talents, can't adapt to this wave immediately.
For software vendors, OPC has little impact on them, plus OPC functions, which is relatively difficult for them.
