System overview
4.4 CPUs
Automation system
66 System Manual, 01/2023, A5E03461182-AK
Example: Trace optimizes the commissioning of packaging machines
Automation task:
At what speed does a plant reach its maximum productivity? How do you quickly determine
the optimum settings?
The packaging machine ensures quick and reliable packaging of ECG electrodes on a rotary
table which is loaded and unloaded by a conveyor belt.
Feature:
After filling is the correct time for further transport of the packaged electrodes. Light barriers
trace the position of the electrodes for this.
Solution:
The Trace function of a SIMATIC S7-1500 CPU visualizes the exact sequence of selected
signals over a short period of time. It supports the start-up engineer in finding the exact light
barrier positions and the optimum speed for belts and the rotary table.
The trace recordings are supplied to the customer as part of the plant project. In the event of
a fault, the customer recognizes whether changes to the basic settings have caused the fault.
In addition, the trace recordings are stored as a "measurement" on the SIMATIC memory card,
up to 999 trace recordings are available for evaluation.
Advantages and customer benefits
The Trace function provides you with the following advantages:
• Cost-effective and easy evaluation as the signals are available in the CPU
• Monitoring of highly dynamic processes
• Up to 8 independent trace jobs simultaneously
• Recording for each cycle of up to 16 tag values for the precise optimization of controls and
drives
• recording in separate CPU memory area for easy localization of sporadic errors
• Various trigger options
• Various zoom and cursor measuring functions
• Saving trace recordings on the SIMATIC memory card
• export of measurements, e.g. for user-specific processing
Project trace
A project trace includes trace configurations of multiple devices and records the signals
across devices.
Synchronization takes place via a global trigger that can be triggered by any device. After
receiving the global trigger, the devices with valid project trace configuration start the
recording.
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