WinCC Professional V13 SP1 – Simple Sample: calling a script by a tag change

“Simple Samples” are small projects that demonstrate simple features. The target is give a quick overview about the theme and be used as start point for related discussions. Follow there are a short description and the configuration main steps.

Description:

By changing a value of a tag (HMI_Tag_1), a script will be called and increment the value of a second tag (HMI_Tag_2).

WinCC could call scripts triggered by time or by Tag change. It makes possible, for example, to call a script (indirectly) by a PLC command.

Requirements:

WinCC Professional V13 SP1.

Project with a minimum configuration (stop button, tags, etc.).

Configuration main steps:

• Create a Project

• Create two tags (“HMI_Tag_1” and “HMI_Tag_2” both as “UInt”)

• Create a VB Function (Scripts → VB Script → Add new VB Function)

• Configure the VB functions like follow:

Sub VBFunction_1()

IncreaseTag "HMI_Tag_2" , 1

End Sub

• Create a Schedule (Schedule tasks → Add new)

• Configure the Schedule Task (General, Trigger = “Tag Trigger”, add Trigger, Tag = “HMI_Tag_1”)

• Create a Screen

• Insert a I/O Field (Toolbox → Elements).

• Link the I/O Field with “HMI_Tag_1” (Properties → General → Tag = “HMI_Tag_1”)

• Insert a I/O Field (Toolbox → Elements).

• Link the I/O Field with “HMI_Tag_2” ( Properties → General → Tag = “HMI_Tag_2”)

Thanks:

Thanks to the Siemens United States Technical Support (in special Mr. David Crockett) for the Help with this TIP.

References:

Manual

WinCC Professional V13.0

https://support.industry.siemens.com/cs/br/pt/view/92323076/en

Online helps system

WinCC Professional V13.0 SP1

https://support.industry.siemens.com/cs/br/pt/view/109096785/en