Upgrade design and prototype implementation of cryogenic control system in BEPCII

Background The cryogenic control system of BEPCII has been in stable operation for more than 10 years, providing technical support for the generation of cryogenic environments. The core hardware of the cryogenic control system is composed of PLC and VME controller, and the operating software includes PLC commercial software and EPICS. However, some hardware and software are obsolete.
Purpose An upgrade prototype of the cryogenic control system is designed and built to study the compatibility contradiction between software and hardware, and ensure the long-term stable operation of cryogenic system.
Method Keep the hardware architecture, upgrade the software and hardware modules of PLC and VME respectively, and test the system compatibility.
Conclusion The upgrading prototype of the cryogenic control system solves the problem of software and hardware compatibility, and makes it possible to achieve a seamless and smooth upgrade of the cryogenic control system in the future.