Learn WINCC-PCS7-SCRIPTS with Real Code Examples

WinCC PCS7 Scripts allow developers to automate HMI screens, alarms, process sequences, and operator interactions.

Supports VBScript and ANSI C for flexible automation tasks.

Can be used to manipulate tags, database values, and control logic dynamically.

Integrates with WinCC/PCS7 runtime and process control blocks for advanced automation.

Widely used in chemical, pharmaceutical, water/wastewater, and process industries for custom operator interfaces and automated workflows.

Dynamic tag read/write functions

Alarm and message handling

Custom dialogs and HMI updates

Workflow automation and control logic extension

Database interaction and reporting scripts

Script - set of instructions in VBScript or C executed on event triggers

Tag - variable representing process value or control point

Event - triggers script execution (e.g., tag change, user interaction)

HMI Object - visual element on operator screens

Process Control Block - standard PCS7 function blocks manipulated by scripts

HMI Screens - scripts attached to buttons, indicators, or panels

Process Control Scripts - interact with FC/FB or tags

Global Scripts - reusable functions accessible across project

Database/Reporting Scripts - read/write process data to SQL or files

Project Libraries - collection of reusable script modules

Define automation task or HMI behavior to extend

Write script to perform required logic or calculations

Attach script to HMI object or process event

Test script in runtime simulation

Deploy to production runtime nodes

Beginner: Simple tag manipulation and HMI updates

Intermediate: Event-driven alarm handling and notifications

Advanced: Complex calculations and workflow automation

Expert: Multi-screen, multi-tag coordinated automation scripts

Architect: Enterprise integration with external databases and systems

PCS7 Scripts vs Standard PCS7 FBs: Scripts add flexibility beyond standard blocks

PCS7 Scripts vs Wonderware Scripts: PCS7 tightly integrated with Siemens ecosystem

PCS7 Scripts vs Python/Node-RED: Scripts are limited to runtime environment but fully integrated

PCS7 Scripts vs PLC Logic: Scripts complement PLC logic for HMI and visualization

PCS7 Scripts vs Excel-based automation: Scripts run in real-time within SCADA/HMI environment

Late 1990s - Initial scripting support in WinCC/PCS7

2005 - Expanded VBScript integration with runtime HMI

2010 - Event-driven scripts and database connectivity enhanced

2015 - Improved debugging and template-based scripting

2020 - Modern PCS7 scripting with MES and SQL integration

2025 - Latest scripting APIs and runtime performance improvements

Tag - Variable representing process or PLC value

HMI Object - Visual element in WinCC screens

Event - Trigger that executes a script

Process Control Block - Standard PCS7 function or block

Runtime - Execution environment for scripts and HMI