大概看了一下楼主找到的官方文档和范例，其中提供了两个方案。第一个方案就行，很容易实现。第二个需要一台额外电脑。

还真是从来没注意过作业信箱这个东西。帮助中可以搜到“作业信箱”，但中文翻译看着一脸懵，还是英文的吧。博途这文档真是不敢恭维。

Job mailboxes（位于：HMI项目 -> 连接 -> 区域指针 -> 作业信箱）

The PLC can use the job mailbox to transfer jobs to the HMI device to trigger corresponding actions on the HMI device.

The first word of the job mailbox contains the job number. Depending on the job mailbox, up to three parameters can be transferred.

The HMI device evaluates the job mailbox if the first word of this job is not equal to zero. This means that the parameters must be entered in the job mailbox first, followed by the job number. When the HMI device accepts the job mailbox, the first word is set to 0 again. The execution of the job mailbox is generally not completed at this point in time.

All job numbers of the job mailbox and their functions are listed below.  Job mailboxes can only be triggered by the PLC when the HMI device is online. 

14 Set time (BCD-coded)

15 Set date (BCD-coded) 

23 User logoff 

41 Transfer date/time to PLC 

46 Update tag 

49 Clear event buffer 

50 Clear error alarm buffer 

51 Display selection 

69 Reading data record from PLC（范例中就是用这个作业号功能，把配方的数据记录同步到其它触屏）

70 Writing data record to PLC  

另外，楼主找到的资源属于Application example（见文档封面）。Application example是可以在西门子全球库中找到的学习资源中最棒的部分。不夸张的说，经常阅读官方范例的收益效率，数倍于其它方式。刚查了一下，全球库中精致面板的范例有80个，这个范例就是其中一个。1200有143个范例，1500有207个。