安装tia V14的是升级到V4.2版本了的。

s71211的固件版本升级，

Firmware update for CPU 1211C, DC/DC/DC, 6DI/4DO/2AI

https://support.industry.siemens.com/cs/document/107247170

CPU 1214 FC、DC/DC/DC 与 14DI/10DO/2AI 的固件更新https://support.industry.siemens.com/cs/document/109477825

如果cpu不在此列，这个页面中查找，

https://support.industry.siemens.com/cs/search?search=s7-1200固件版本V4.2&type=ProductSupport%2CProductNote%2CFaq%2CExampleOfUse%2CManual%2CCharacteristic%2CCertificate%2CDownload%2CDownloadSoftwareArchive%2CSlk%2CTechnicalForum%2CELearning%2CFindAnswer&lc=zh-CN