Learn S7-SCL-ADVANCED with Real Code Examples

Programs structured into OBs (organization blocks), FBs, and FCs

Data areas include global (DBs) and local variables

S7 runtime handles scheduling and execution of OBs

Function blocks encapsulate logic and maintain state

Supports modular interaction with HMI and SCADA systems

OBs control execution flow

FBs maintain internal state and reusable logic

FCs perform stateless calculations

DBs store variable data

Visualization via HMI/SCADA; logic executed on PLC runtime

Modular block-based architecture

Top-down execution with OBs

Event-driven function blocks

Encapsulation of logic and state in FBs

Hierarchical data management with DBs

Automotive assembly line control

Batch chemical process automation

Conveyor and robotic material handling

Packaging machine automation with multiple PLCs

Complex HVAC systems in large buildings

Structured programming with modular blocks

Reusability via FBs and FCs

Deterministic execution optimized for PLC scan cycles

Strong typing and data integrity

Seamless integration with Siemens hardware and protocols

Modular FB design for large projects

Reuse FCs and FBs across multiple machines

Organize DBs for large datasets

Divide execution into OBs for multi-tasking

Optimize code to maintain deterministic scan times

Legacy SCL -> Advanced SCL: Refactor ladder logic to structured blocks

Update FBs and FCs for reusability

Convert global variables to DBs for modularity

Test scan cycles and optimize performance

Ensure compatibility with target PLC hardware