SIWAREX Weighing Electronics for SIMATIC – Modular Weighing Integration for Siemens Automation

FAQ about SIWAREX Weighing Electronics for SIMATIC

Answers to questions regarding functionality, integration, selection, calibration and common pitfalls.

What makes SIWAREX electronics special?

SIWAREX modules are designed to be directly integrated into SIMATIC automation systems — supporting Siemens CPUs, ET 200 modules, PROFINET/PROFIBUS communication and project engineering in TIA Portal or PCS 7. :contentReference[oaicite:5]{index=5} They also offer high resolution (e.g., up to 16 million points) and legal-for-trade approval in many types. :contentReference[oaicite:6]{index=6}

Which applications are covered?

Applications include:

• Batch weighing and dosing systems
• Platform and conveyor scales
• Crane weighing modules
• Force and torque measurement in automation
• Integration of weighing into process control (S7, PCS 7) with full diagnostics and data handling

What modules are available in the SIWAREX family?

Variants include e.g. the SIWAREX U, SIWAREX FTA and SIWAREX WP series. For example, the SIWAREX U is a cost-effective module for general weighing/force measurement within SIMATIC S7-300/400 systems. :contentReference[oaicite:7]{index=7}

What selection criteria should be considered?

• Number of channels (single- or dual-channel) and total load cell count
• Whether legal-for-trade / market approval is required
• Integration environment: which SIMATIC system (S7-1200, S7-1500, S7-300/400, ET 200M)
• Required communication: PROFINET, PROFIBUS, Modbus, serial, digital I/O
• Required resolution and update rate (e.g., 50 Hz, 100 Hz) and filtering options :contentReference[oaicite:8]{index=8}
• Safety and environment: Ex/ATEX zones, ambient temperature, signal cable lengths :contentReference[oaicite:9]{index=9}

How is installation and integration handled?

The SIWAREX module is mounted in the automation rack or ET 200M station, connected to the load cells (shielded cable), integrated into the SIMATIC project via TIA Portal or STEP 7. Calibration or parameterisation is done via PC or SIMATIC HMI using software such as SIWATOOL. :contentReference[oaicite:10]{index=10}

What calibration or verification is necessary?

Depending on the application (internal diagnostics vs trade-legal weighting), calibration may be required. For legal-for-trade use the full system must comply with OIML / MID or relevant national regulations and be verified accordingly. :contentReference[oaicite:11]{index=11}

What are common error sources?

• Incorrect wiring or shielding of load cell cables → signal interference
• Signal line too long or exceeding recommended resistance/capacitance → measurement drift :contentReference[oaicite:12]{index=12}
• Poor grounding or lack of separation between power and signal lines
• Inadequate filter settings leading to unstable readings
• Incorrect or missing communication setup within SIMATIC project (bus addressing errors)

How can I request more information or a quotation?

Please provide ICS Schneider Messtechnik with details such as number of load cells, required legal/firm-approval status, automation platform (SIMATIC type), communication requirements, required update rate, environment (hazardous area/ex), and any special filter or diagnostic requirements. A tailored solution will be proposed.