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北仑港10万吨级矿石码头取制样设施控制系统改造工程细分为控制子系统(包括PLC控制、变频控制、计量控制)、摄像子系统、内部通讯子系统。因篇幅关系,本文只介绍控制子系统中的PLC控制和计量控制部分。 该两部分改造完成后,与原系统比较在保留原系统功能的情况下,将新增以下功能: 1.新系统PLC控制器采用双机热备方案。在CPU系统出现故障的情况下,可实现自动无干扰切换,进一步提高控制系统的可靠性和可维护性。
Beilun Port 100000-ton ore terminal to take sample facilities control system renovation project is subdivided into control subsystem (including PLC control, inverter control, metering control), camera subsystem, internal communication subsystem. Due to space, this article describes only the control subsystem PLC control and metering control section. The two parts of the transformation is completed, compared with the original system to retain the original system functions, will add the following features: 1. The new system PLC controller dual hot standby program. In the case of CPU system failure, automatic interference-free switching can be achieved to further improve the control system reliability and maintainability.