Industrial PROFINET Ethernet Switches
Unmanaged RT Priority Switches for Siemens TIA Portal & STEP 7 Networks
Unmanaged Layer 2 switches engineered for PROFINET Conformance Class A (CC-A). Built-in IEEE 802.1p QoS prioritizes Real-Time (RT) cyclic data over standard TCP/IP traffic. Fanless IP40 aluminum housing, operating from -40°C to +75°C.
PROFINET Switches Selection Guide
Compare Fast Ethernet and Gigabit models tailored for Conformance Class A (CC-A) applications.
| VT-SW5PN 5-Port 100M Fast Ethernet. | High Density 100M VT-SW8PN 8-Port 100M Fast Ethernet. | Gigabit Speed VT-SW5GPN 5-Port Full Gigabit Ethernet. | High Density Gigabit VT-SW8GPN 8-Port Full Gigabit Ethernet. | |
|---|---|---|---|---|
| Processing & Network Functions | ||||
| PROFINET Priority (QoS) | Supported | Supported | Supported | Supported |
| Copper Ports (RJ45) | 5 x 10/100M | 8 x 10/100M | 5 x 10/100/1000M | 8 x 10/100/1000M |
| Jumbo Frame Size | 2 kBytes | 2 kBytes | 9 kBytes | 9 kBytes |
| Hardware & Reliability | ||||
| Power Input (Non-Polarity) | Dual DC 9~60V / AC 24V | Dual DC 9~60V / AC 24V | Dual DC 9~60V / AC 24V | Dual DC 9~60V / AC 24V |
| Power Consumption | < 1W @ DC24V | < 1.4W @ DC24V | < 2.1W @ DC24V | < 3.2W @ DC24V |
| Operating Temperature | -40°C to +75°C | -40°C to +75°C | -40°C to +75°C | -40°C to +75°C |
| EMC Immunity | Level 3 ESD / Level 4 Surge | Level 4 ESD / Level 4 Surge | Level 4 ESD / Level 4 Surge | Level 4 ESD / Level 4 Surge |
| View Details | View Details | View Details | View Details | |
Optimize Your Siemens Architecture
Don’t waste IT budget on managed switches when setting up standard S7-1200 or S7-1500 machine cells. Our Unmanaged PROFINET switches execute QoS perfectly for Conformance Class A networks, saving you configuration time and hardware costs.
PROFINET QoS Priority
Built-in Quality of Service (QoS) identifies PROFINET Real-Time (RT) frames and prioritizes them over standard TCP/IP traffic, ensuring your I/O modules never drop connection.
Zero TIA Portal Configuration
True plug-and-play. Because it operates transparently at Layer 2, there is no need to import GSDML files or assign IP/MAC addresses in your engineering software.
Jumbo Frame Support
Gigabit models support massive 9Kbyte Jumbo Frames, allowing heavy SCADA diagnostic data to flow seamlessly without clogging the real-time control bus.
Non-Polarity Wide Voltage
Dual DC9~60V or AC24V inputs with reverse-connection protection. Panel builders can wire it up blindly without fearing polarity burnouts.
Level 4 EMC Immunity
Heavy-duty electrical shielding protects internal logic from massive EMI/RFI noise generated by nearby Variable Frequency Drives (VFDs) inside the cabinet.
IP40 Aluminum Armor
Fanless, corrugated aluminum alloy housing provides superior passive heat dissipation, guaranteeing stable operation from -40°C to +75°C.
Applications Of PROFINET Ethernet Switches
Engineered for robust machine-level networking and factory automation cells.
Automotive Assembly Lines
Networking decentralized remote I/O modules back to the main Siemens S7-1500 controller with zero configuration downtime.
Packaging Machinery
Executing reliable PROFINET RT cyclic data exchange between PLCs and VFDs in high-vibration rotary machine cabinets.
Water & Wastewater Treatment
Connecting distributed pump controllers and flow meters across the plant using wide-temperature IP40 rugged switches.
Intralogistics & Conveyors
Daisy-chaining multiple control panels along miles of warehouse conveyor belts without accumulating unacceptable network latency.
Food & Beverage Production
Ensuring HMI recipe updates (TCP/IP) and valve control commands (PROFINET) coexist perfectly on the same network wire via QoS.
Lithium Battery Manufacturing
Providing Level 4 EMC immunity to guarantee data integrity in heavily electrically-noisy coating and winding machine environments.
What Our Clients Say
Real-world reliability verified by field systems integrators.
“I used to buy expensive managed SCALANCE switches for each and every basic I/O panel just because they said ‘PROFINET’ on the box. Switching to Valtoris unmanaged models saved us 60% on our panel costs and TIA Portal handles the RT data perfectly via QoS.”
“I love that I don’t have to assign IP addresses or mess with GSDML files for the switch itself. We just pop the VT-SW8GPN onto the DIN rail, plug in the S7-1200 and the Festo drives, and the network is instantly up and running.”
Procure PROFINET Switches for Your Projects
Stop overpaying for managed switches on basic machine cells. Contact us for direct-from-manufacturer volume pricing.
Request Custom QuoteDownload the PROFINET Switches Line Card
Get a quick offline comparison of port speeds, jumbo frame capacities, and EMC ratings across the VT-SW PROFINET series.
Frequently Asked Questions
Will this switch appear visually in TIA Portal’s graphical ‘Topology View’ diagnostics?
No. TIA Portal’s graphical Topology View relies on LLDP (Link Layer Discovery Protocol) agent packets generated strictly by Managed switches. Because our unmanaged Layer 2 switches pass LLDP frames through transparently without injecting their own MAC agent data, TIA Portal will show your Siemens PLC connected directly to your end I/O module. It treats the Valtoris switch as a completely invisible, zero-latency Ethernet wire.
Does this switch pass through Siemens DCP broadcast packets used for ‘Assign IP via MAC’ scanning?
Yes, absolutely. The switch provides full, unblocked Layer 2 broadcast forwarding. When you click ‘Accessible Devices’ or ‘Assign device name’ in TIA Portal or STEP 7, the DCP discovery broadcasts pass instantly across all RJ45 ports. This allows field technicians to discover and commission virgin, out-of-the-box PROFINET IO slaves directly through the switch.
If I daisy-chain multiple switches, will accumulated latency trigger a PROFINET Bus Fault (BF LED)?
No. The VT-SW series provides deterministic internal store-and-forward latency of less than 10μs (microseconds) per hop on Gigabit models. Cascading 5 switches in a series adds less than 0.05ms to the total line jitter. The accumulated delay is still far below the Siemens watchdog timeout, provided your TIA Portal IO cycle “Send Clock” is 1.0ms or 2.0ms (standard).
Can I use these unmanaged switches for PROFINET IRT (Isochronous Real-Time) motion control?
No. PROFINET IRT bypasses the standard Ethernet MAC table entirely and relies on specialized hardware ASIC chips to force time-scheduled synchronization (< 1ms cycle times). Our unmanaged switches execute PROFINET RT (Real-Time) via QoS prioritization. This is the exact engineering standard for 90% of standard factory automation, remote ET200SP I/O drops, VFD speed polling, and process instrumentation.
