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Manufacturing · head to head

Samotics vs Siemens WinCC Unified

Samotics logo

Samotics

Manufacturing

Condition monitoring of motor-driven assets using electrical signature analysis from the motor control cabinet

From
On request
Rated
-
Full reviewWebsite
Siemens WinCC Unified logo

Siemens WinCC Unified

Manufacturing

Siemens web-based HMI and SCADA platform, licensed by PowerTag count inside TIA Portal

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Samotics sAM4 only sees what reaches the motor electrically, so it covers the driven train and misses un-driven equipment, structures, process conditions and anything downstream of a mechanical decoupling.; Siemens WinCC Unified licensing counts PowerTags, and archived tags are licensed separately from displayed tags, so a project that adds historian logging late can breach a tier and trigger an unbudgeted step-up purchase.
  • They diverge on capability: Samotics covers Electrical signature analysis, Siemens WinCC Unified covers TIA Portal engineering.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Samotics and Siemens WinCC Unified actually diverge.

Attributes where Samotics and Siemens WinCC Unified differ
AttributeSamoticsSiemens WinCC Unified
PlatformsWeb, CloudWindows, Web, Linux

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (Manufacturing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Samotics

  • Electrical signature analysis
  • Switchroom installation
  • Energy and efficiency measurement
  • Submersible and hazardous area coverage
  • Fault classification
  • Fleet view

Only in Siemens WinCC Unified

  • TIA Portal engineering
  • HTML5 runtime
  • PowerTag licensing tiers
  • Unified Comfort Panels
  • Parameter Control
  • Performance Insight
  • JavaScript scripting
  • OPC UA server and client

What people use each for

The jobs each tool is most often brought in to do.

Samotics

  • A water utility monitoring submersible and borehole pumps that no vibration sensor can be fitted to without lifting the pumpnot Siemens WinCC Unified
  • A chemical plant with assets in ATEX zones where certifying and maintaining in-field sensors is more expensive than the monitoring itselfnot Siemens WinCC Unified
  • A food plant that wants pump and mixer condition data without opening guarding or taking a hygiene-critical line down to fit sensorsnot Siemens WinCC Unified
  • A site building an energy reduction case, where measured motor efficiency and waste give the business case a payback that reliability alone would notnot Siemens WinCC Unified

Siemens WinCC Unified

  • A machine builder standardising on S7-1500 who wants HMI screens engineered in the same project as the PLC codenot Samotics
  • Replacing a WinCC V7 plant SCADA before the 2027 support cut-off without changing controller vendornot Samotics
  • A line supervisory system where operators and supervisors need browser access from tablets with no client software rolloutnot Samotics
  • A plant already committed to the TIA Portal toolchain, where the cost of a rival SCADA is the second engineering environment and the second set of skills rather than the licencenot Samotics

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Samotics

  • SAM4 only sees what reaches the motor electrically, so it covers the driven train and misses un-driven equipment, structures, process conditions and anything downstream of a mechanical decoupling.
  • Each monitored motor needs hardware installed in the motor control centre by a qualified electrician, and in older switchrooms that installation, including any required outage, can cost more than a year of the subscription.
  • Per-asset subscription pricing means the cost scales linearly with the number of motors, so a plant with a thousand small motors faces a bill that a fixed-price plant-wide vibration system would not impose.
  • Electrical signature analysis on variable-speed drives is harder than on direct-on-line motors, and results vary with drive type, so a heavily VSD estate should insist on a pilot on its own drives before committing.
  • Nothing is published on price, contract length or minimum deployment size, and the vendor sells multi-year subscriptions, so early exit terms are a negotiation you have to raise yourself.

Siemens WinCC Unified

  • Licensing counts PowerTags, and archived tags are licensed separately from displayed tags, so a project that adds historian logging late can breach a tier and trigger an unbudgeted step-up purchase.
  • There is no migration tool that converts a WinCC V7 project to Unified, so leaving the classic line before its 2027 support end means rebuilding screens, scripts and alarm configuration by hand.
  • Scripting moved from VBScript to JavaScript, which invalidates the script libraries in-house engineers accumulated over a decade on classic WinCC.
  • It is effectively bound to the Siemens controller stack; connecting Rockwell or Mitsubishi PLCs works through OPC UA but loses the shared tag database that is the main reason to buy it.
  • Three unrelated products share the WinCC name, and buyers who specify WinCC without saying Unified, V7 or OA regularly receive quotes for the wrong platform with different licensing and a different contractor pool.

Pricing, plan by plan

Samotics

On request
  • SAM4$undefined/year
    • Subscription priced per monitored asset
    • SAM4 sensor hardware required in each motor control centre
    • Electrical installation by a qualified electrician, quoted separately

Siemens WinCC Unified

On request
  • WinCC Unified$undefined/year
    • Engineering licence per seat within TIA Portal
    • Runtime licensed in PowerTag tiers, from 100 tags to unlimited
    • Archived tags licensed separately from displayed process tags

Which should you pick?

Choose Samotics if

  • You need electrical signature analysis.
  • You work on Web, Cloud.
  • You also want switchroom installation.
Samotics review

Choose Siemens WinCC Unified if

  • You need tia portal engineering.
  • You work on Windows, Web, Linux.
  • You also want html5 runtime.
Siemens WinCC Unified review

Questions people ask

Is Samotics or Siemens WinCC Unified better?
Neither clearly leads. Samotics starts at On request and Siemens WinCC Unified at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Samotics or Siemens WinCC Unified?
Samotics starts at On request and Siemens WinCC Unified at On request.
Does Samotics or Siemens WinCC Unified run on more platforms?
Samotics runs on Web, Cloud. Siemens WinCC Unified runs on Windows, Web, Linux.
What is Samotics best used for?
Samotics is most often used for a water utility monitoring submersible and borehole pumps that no vibration sensor can be fitted to without lifting the pump, a chemical plant with assets in atex zones where certifying and maintaining in-field sensors is more expensive than the monitoring itself, a food plant that wants pump and mixer condition data without opening guarding or taking a hygiene-critical line down to fit sensors, a site building an energy reduction case, where measured motor efficiency and waste give the business case a payback that reliability alone would not. Of those, a water utility monitoring submersible and borehole pumps that no vibration sensor can be fitted to without lifting the pump and a chemical plant with assets in atex zones where certifying and maintaining in-field sensors is more expensive than the monitoring itself are not what Siemens WinCC Unified is typically brought in for.
What can Samotics do that Siemens WinCC Unified cannot?
Samotics covers Electrical signature analysis, Switchroom installation, Energy and efficiency measurement, Submersible and hazardous area coverage. Siemens WinCC Unified covers TIA Portal engineering, HTML5 runtime, PowerTag licensing tiers, Unified Comfort Panels.

Answered from the vendors’ own pages

Samotics: Does Samotics replace vibration monitoring?

For motor-driven assets it often does, and it reaches assets vibration cannot. For un-driven equipment and structures it does not apply at all.

Siemens WinCC Unified: Should I buy WinCC Unified or WinCC V7?

Unified, for any new project. V7 and V8 receive no new features and support ends in 2027.

Samotics: Do I have to buy Samotics hardware?

Yes. SAM4 requires the vendor's sensors fitted in the motor control centre; there is no software-only option.

Siemens WinCC Unified: Is WinCC OA the same product?

No. WinCC OA came from ETM, has its own engineering environment and licensing, and is aimed at very large distributed systems. It shares only the brand.

Samotics: Does it work on variable-speed drives?

It can, but performance depends on the drive and the operating profile. Pilot it on your own VSD assets rather than accepting a reference from a direct-on-line site.

Siemens WinCC Unified: What is a PowerTag?

An externally connected process variable in the runtime. Internal tags do not count, but archived tags are licensed separately from displayed ones.

Samotics: How is it priced?

Subscription per monitored asset, quoted, typically on a multi-year term, with hardware and electrical installation on top.

Siemens WinCC Unified: Can operators use it from a browser without installing anything?

Yes, the runtime is HTML5, but concurrent browser clients need WebUX or Unified client licences.

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