Abstract: In order to avoid aggrieving the legality benefit of a hydraulic-brick-machine manufacturing-enterprise, a new PLC control system with authentication function based on FPGA is presented after the analysis of former control system in this paper. The new control system is introduced encryption board between the communication cable and PLC. The base program in the core which is the limited-state-machine is exploited by the use of VHDL. The stability, reliability and security of the control system is validated through the application to industry application.

Key words: control system, encryption, Programmable Logic Control(PLC), Field Programmable Gate Array(FPGA)

摘要： 为使压砖机制造企业的合法利益免受严重侵害，该文在分析原控制系统的基础上，提出基于FPGA的具有加密功能的PLC控制系统，在通信电缆和PLC之间引入了加密板，采用VHDL语言为平台，开发了以有限状态机为内核的底层系统。经工业现场应用，验证了该控制系统的稳定性、可靠性和安全性。

关键词: 控制系统, 加密, 可编程逻辑控制, 现场可编程门阵列

CLC Number: 

• TP393.02