利用PLC的特殊功能模块技术，较好地实现了电子束流的上升梯度和下降梯度的方便调节。

Adopting PLC special function block technology, it is easy to realize to adjust up step or down step of electronic beam current.

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开放式PLC最大特点就是能通过CAN总线方便地扩展功能模块，特别是用户设计的特殊功能模块。

Open architecture PLC advantage is that it can extend function module by CAN-BUS, especially module with special function designed by users.

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