Main features of programmable controllers

Characteristics of Programmable Controllers
Programming language: Programmable controllers mainly support two languages, command language and ladder diagram, and the two programming languages are easily interchangeable and applicable.
Program security: To prevent users' programs from being stolen or modified incorrectly, programs can generally be encrypted. When the encrypted program is uploaded, it will be verified in the form of a password, which can effectively protect the user's copyright and also restrict downloading to prevent malicious modification of the program in the PLC.
Program annotation: When a user's program is too complex and difficult, it is often necessary to annotate the program or the software components used to facilitate future modifications. Appropriate annotations can accelerate the user's understanding of the program.
Offset function: Adding an offset suffix (such as X3{D100}, M10 {D100}, D0 {D100}) to the data register of the coil can achieve concise addressing. For example, when D100=9, X3{D100} represents X14, M10 {D100} represents M19, and D0 {D100} represents D9
Enriching basic functions: Programmable controllers provide users with sufficient basic instructions to meet basic sequence control, data transmission and comparison, four arithmetic operations, logic control, data circulation and shift functions.