Bosch Rexroth Communications for Packaging Automation

Implementing Packaging Automation with Communications

Packaging automation systems use PLCs to coordinate primary, secondary, and tertiary packaging operations. These systems control filling, labeling, case packing, palletizing, and integration with production and warehouse systems.

This walkthrough demonstrates practical implementation using Bosch Rexroth ctrlX WORKS / IndraWorks and Communications programming.

System Requirements:

A typical Packaging Automation implementation includes:

Input Devices (Sensors):
1. Product detection sensors for counting and positioning: Critical for monitoring system state
2. Registration sensors for label and film alignment: Critical for monitoring system state
3. Barcode/2D code readers for verification: Critical for monitoring system state
4. Vision systems for quality inspection: Critical for monitoring system state
5. Reject confirmation sensors: Critical for monitoring system state

Output Devices (Actuators):
1. Servo drives for precise motion control: Primary control output
2. Pneumatic cylinders for pick-and-place: Supporting control function
3. Vacuum generators and cups: Supporting control function
4. Glue and tape applicators: Supporting control function
5. Film tensioners and seal bars: Supporting control function

Control Equipment:

• Form-fill-seal machines (horizontal and vertical)


• Case erectors and sealers


• Labeling systems (pressure sensitive, shrink sleeve)


• Case packers (drop, wrap-around, robotic)

1. Primary Control: Automated packaging systems using PLCs for product wrapping, boxing, labeling, and palletizing.
2. Safety Interlocks: Preventing Product changeover
3. Error Recovery: Handling High-speed synchronization

Implementation Steps:

Step 1: Define packaging specifications for all product variants

In ctrlX WORKS / IndraWorks, define packaging specifications for all product variants.

Step 2: Create motion profiles for each packaging format

In ctrlX WORKS / IndraWorks, create motion profiles for each packaging format.

Step 3: Implement registration control with encoder feedback

In ctrlX WORKS / IndraWorks, implement registration control with encoder feedback.

Step 4: Program pattern generation for case and pallet loading

In ctrlX WORKS / IndraWorks, program pattern generation for case and pallet loading.

Step 5: Add reject handling with confirmation logic

In ctrlX WORKS / IndraWorks, add reject handling with confirmation logic.

Step 6: Implement barcode/vision integration for verification

In ctrlX WORKS / IndraWorks, implement barcode/vision integration for verification.

Bosch Rexroth Function Design:

Rexroth engineers lean heavily on reusable function blocks packaged as ctrlX libraries. The mapp-technology-equivalent SDK apps expose motion-profiled FBs, recipe-driven parameter handlers, and cockpit widgets as pre-built components. OEM machine builders maintain private app catalogues for their machine families, with versioned FBs that can be swapped between machine variants without rewiring upstream code. IEC 61131-3 OOP extensions (classes, interfaces, methods) are used in more advanced teams but are optional.

Common Challenges and Solutions:

1. Maintaining registration at high speeds

• Solution: Communications addresses this through System integration.

• Solution: Communications addresses this through Remote monitoring.

• Solution: Communications addresses this through Data sharing.

• Solution: Communications addresses this through Scalability.

• Guarding around rotating and reciprocating parts


• Safety-rated position monitoring for setup access


• Heat hazard protection for seal bars and shrink tunnels


• Proper pinch point guarding


• Robot safety zones and light curtains

• Scan Time: Optimize for 5 inputs and 5 outputs


• Memory Usage: Efficient data structures for ctrlX CORE XM21 capabilities


• Response Time: Meeting Packaging requirements for Packaging Automation

Bosch Rexroth Diagnostic Tools:

ctrlX WORKS Trace tool — multi-variable waveform logging at up to 1 ms sample rate,Data Layer Explorer — browse every runtime variable in a hierarchical tree with live values,Web-based diagnostics interface — device-level health, CPU and memory utilisation,IndraWorks MotionManager — axis commissioning, tuning plots, and envelope monitoring,ctrlX I/O Engineer — field-bus topology view with per-slave diagnostic status,Integrated Git history for project files with visual diff between versions,Wireshark integration for EtherCAT and Profinet frame capture and analysis,Linux journalctl access on ctrlX CORE for controller-side system log inspection,REST API query tools (Postman, curl) for runtime variable inspection during development,SSH access to the ctrlX controller for deep diagnostics when support escalation is required

Bosch Rexroth's ctrlX WORKS / IndraWorks provides tools for performance monitoring and optimization, essential for achieving the 3-6 weeks development timeline while maintaining code quality.