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Industrial automation guides

Straight answers for buyers and engineers: how to integrate, select and replace automation parts, written to be checked against the manufacturer’s datasheet.

8 min read

How to integrate a PLC with an ERP system

Practical steps to connect a PLC to an ERP or MES: choosing OPC UA, MQTT or a database gateway, mapping tags to ERP data, and securing the link.

Read the guide 6 min read

PROFINET vs EtherNet/IP vs Modbus TCP: which protocol to use

A practical comparison of PROFINET, EtherNet/IP and Modbus TCP: where each fits, typical vendors, performance, and how to choose for a new machine or retrofit.

Read the guide 7 min read

How to choose a variable frequency drive (VFD)

Step-by-step VFD selection: match motor current and voltage, load type, overload rating, braking, filters and communication so you order the right drive first time.

Read the guide 5 min read

How to read a Siemens part number (MLFB) and find the right variant

How Siemens order numbers (MLFB) are structured, why one digit changes the variant, and how to confirm the exact part before you buy.

Read the guide 6 min read

How to find a replacement for an obsolete automation part

A practical process for replacing a discontinued PLC, drive, HMI or sensor: confirm the exact part, find the successor, check compatibility and plan the changeover.

Read the guide 7 min read

How to select a PLC: a practical checklist

Choose a PLC with confidence: count I/O, check communication and safety needs, size memory and scan time, and plan for spares, software and future expansion.

Read the guide 5 min read

How to size a 24 V DC power supply for a control cabinet

Size a 24 V DC power supply correctly: add up the loads, allow inrush and headroom, derate for temperature, and decide whether you need redundancy.

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