论文部分内容阅读
文章介绍了PLC的选用原则,选型所选用的PLC应与相关工业领域有着应用广泛、成熟可靠的系统、PLC系统硬件、软件配置及功能应与装置规模和控制要求相适应。明确控制任务和范围,确定所需操作和动作,然后根据控制要求,估算输入输出点数、所需存储器容量,确定PLC功能、外部设备特性等,最后选择有较高性价比的PLC和设计了相应的控制系统。
This article introduces the selection principle of PLC. The PLC used in the selection and selection of the PLC should have a wide range of mature and reliable systems with related industries. The hardware and software configuration and function of the PLC system should be compatible with the device size and control requirements. Clearly control the task and scope, determine the required operations and actions, and then according to the control requirements, estimate the number of input and output points, the required memory capacity, determine the PLC features, external device characteristics, and finally choose a more cost-effective PLC and designed the corresponding Control System.