PCD231B101 modular

Provided by Shanxi Runsheng Import and Export Co., Ltd

① Brand: ABB

② Model: PCD231B101

③ Product category: module

④ Payment method: telegraphic transfer, USD, Western Union remittance

⑤ Freight: The freight in different regions shall be subject to the local freight forwarder

⑥ Does it include tariffs? It does not include any taxes.

⑦ Packaging: use the Seller’s safe packaging.

Compared with the general computer language, the programming language of PLC has obvious characteristics. It is different from both high-level language and general assembly language. It should meet the requirements of both easy to write and easy to debug. At present, there is no programming language that is compatible with all manufacturers’ products. For example, Mitsubishi products have their own programming language, and OMRON products also have their own language. However, no matter what type of PLC, its programming language has the following characteristics:

Graphical instruction structure: the program is expressed in graphical form, and the instruction is composed of different graphical symbols, which is easy to understand and remember. The software developer of the system has compiled the independent operation functions required in industrial control into symbolic graphics. Users can combine these graphics according to their own needs and fill in appropriate parameters. In the logic operation part, almost all manufacturers use ladder diagrams similar to relay control circuits, which is easy to accept. For example, Siemens also uses the control system flow chart to express the control relationship, which is very intuitive and easy to understand. More complex arithmetic operations, timing counting, etc. are generally represented by referring to ladder diagram or logic element diagram, although the symbolic part is not as good as logic operation part