UNS3020 HIEE205010R0001 failsafe relay

The system adopts a global database, and the variables in the system are shared. The global database is completely downloaded to the process level, and the server/client scheme is not used to avoid the paralysis of data exchange tasks caused by server failures. Any variable update in the global database can only be entered once, and the variable check is also carried out system-wide. The programming language is fully compatible with the graphical programming language standard IEC 1131-3, and FBD, LD, IL, SFC, ST and other methods can be selected arbitrarily according to actual control requirements. The system has a large number of standard function blocks and function subroutines. For example, the adjustment block has standard, ratio, step, 2-digit, 3-digit and other function blocks for users to choose according to the actual situation. The function block programming adopts the form of parameter table, and the language is oriented to the language of instrument engineers . At the same time, the system also provides a user-defined interface to develop special function blocks according to user requirements. The system has the function of selecting part, modifying part and downloading all. The software can be programmed offline and parameters can be modified online, and the modified parameters can be restored with automatic backup function. The software can be debugged online, and can be single-step running, tracking, and simulation debugging.