Which PLC for which application? 20 brands, protocols and use cases in one table. The table content is in Turkish.
Software, protocol and strengths.
| Brand | Software | Main protocol | Strength | Origin |
|---|---|---|---|---|
| Siemens | TIA Portal | PROFINET | General purpose, process — most widespread | Germany |
| Allen-Bradley | Studio 5000 | EtherNet/IP | North American standard | USA |
| Mitsubishi | GX Works3 | CC-Link | Fast machine automation | Japan |
| Schneider | Machine Expert | Modbus | Machine + building automation | France |
| Omron | Sysmac Studio | EtherCAT | High speed + integrated vision | Japan |
| ABB | Automation Builder | PROFINET/Modbus | Drives + PLC, process | Switzerland |
| Delta | ISPSoft | Modbus | Cost-effective, quick setup | Taiwan |
| Beckhoff | TwinCAT 3 | EtherCAT | PC-based, advanced motion | Germany |
| Festo | Automation Suite | PROFINET | Pneumatics + valve terminals | Germany |
| Inovance | InoProShop | EtherCAT | Cost-effective, fast-growing | China |
| Fanuc | Ladder III | I/O Link | CNC + industrial robots | Japan |
| Yaskawa | MotionWorks | Mechatrolink | Servo + Motoman robots | Japan |
| KUKA | WorkVisual | PROFINET | Industrial robot arms | Germany |
| Bosch Rexroth | IndraWorks | Sercos III | Hydraulics + heavy-duty motion | Germany |
| Lenze | EASY Engineer | EtherCAT | Motion control, conveyors | Germany |
| SEW-Eurodrive | MOVISUITE | PROFINET | Drive technology, gear units | Germany |
| WAGO | e!COCKPIT | Modbus | Modular I/O + affordable PLC | Germany |
| B&R | Automation Studio | POWERLINK | Integrated motion + HMI | Austria |
| Phoenix Contact | PLCnext Engineer | PROFINET | Open (Linux) platform | Germany |
| Danfoss | MCT 10 | Modbus | Frequency drives (VFD) | Denmark |
Which protocol for which job?
| Main protocol | Type | Speed / latency | Topology | Best use | Owner |
|---|---|---|---|---|---|
| PROFINET | Ethernet | Fast (~1 ms) | Star / Line | General purpose, Siemens ecosystem | PI / Siemens |
| EtherCAT | Ethernet | Very fast (<100 µs) | Line / Daisy chain | Servo, motion, synchronized axes | ETG / Beckhoff |
| Modbus TCP | Ethernet | Mid | Star | Simple, universal, multi-vendor | Open standard |
| Modbus RTU | Serial (RS-485) | Slow | Line | Drives, sensors, legacy devices | Open standard |
| EtherNet/IP | Ethernet | Fast | Star | Allen-Bradley / Rockwell world | ODVA |
| Profibus DP | Serial (RS-485) | Mid | Line | Classic, still very common | PI |
| POWERLINK | Ethernet | Very fast | Line | B&R integrated motion | EPSG / B&R |
| IO-Link | Point-to-point | — | Star | Smart sensor/actuator level | IO-Link Cons. |
Common scenarios and recommended brands.
Siemens (most resources), Delta (budget)
Siemens has the most training material and job postings; Delta for low-cost experimenting.
Omron, Beckhoff
Ideal for multi-axis synchronized motion and integrated vision.
KUKA, Fanuc, Yaskawa
Industrial robot arm manufacturers; leaders in cell integration.
ABB, Danfoss, Lenze, SEW
Strong motor/drive portfolio; for pumps, fans and conveyors.
Delta, Inovance, WAGO
Good price/performance; for OEMs and series machines.
Allen-Bradley
Regional standard; customers often require AB.
Beckhoff, B&R
PLC + motion + HMI + vision on a single platform.
Siemens, ABB, Bosch Rexroth
High reliability, extensive I/O and hydraulic motion.
Siemens is the brand with the most training resources and job postings; starting with Siemens TIA Portal is an advantage. Delta is a good fit for low-cost experimenting.
PROFINET is general purpose and the standard in the Siemens ecosystem. EtherCAT, with its very low latency, excels in servo/motion applications. Choose based on the application type.
KUKA, Fanuc and Yaskawa are the industrial robot leaders. Choose based on your existing PLC infrastructure and service network.
See the step-by-step commissioning guide and official resources for your brand.
This comparison is for information only.
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