更新包来了！

不过看了链接里的readme文件，发现这个upd1并没有很大的改动，多了一个不疼不痒的库，另外对大量调用program_alarm消息块做了性能优化。

SIMATIC TIA CFC V17 Update1

Improvements in Update 1

This update contains the following improvements and changes:

Stability and performance

The stability and performance have been improved, among others, on account of the feedback received.

Instructions: "LBCFC" library for download

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LBCFC库可以下载啦，满怀希望，发现该库平平无奇，只是一些简单的基础指令，如转换和基础数学指令等

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The "LBCFC" block library supplements the instruction library installed with SIMATIC STEP 7 CFC V17.

“LBCFC”块库是对SIMATIC STEP 7 CFC V17安装的指令库补充。

Additional information:

Industry Online Support: SIMATIC STEP 7 CFC V17 - "LBCFC" block library (ID 109800972)

(https://support.industry.siemens.com/cs/ww/en/view/109800972)

Loading project data: Loading large number of "Program_Alarm" instructions

The stability has been improved when loading project data containing many instructions of the "Program_Alarm" type.

当加载包含许多“Program_Alarm”类型指令的项目数据时，稳定性得到了改善。

Requirement:

STEP 7 V17 Update 2 or higher