Design of Vacuum Safety Interlock Control System of Double Beamlines Based on IOC and PLC

The vacuum safety interlock control system of soft X-ray magnetic circular dichroism beamline(MCD-A)and Soochow beamline for energy materials(MCD-B)of HLS is developed.Based on IOC and modular PLC,the control system shared by double beamlines has been realized.The OPI terminal of each beamline can run on the local or remote experimental station.It not only simplifies the system hardware and saves the cost,but also improves the reliability,security,and scalability of the system.It provides a practical basis for the centralized management of vacuum interlock control system of beamlines in the future,using multiple beamline stations to share a set of vacuum interlocking control system.