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HMI + PLC + built-in I/O

Unitronics UniStream Built-in and Samkoon GT/GX: compact HMI+PLC selection guide

Compare UniStream Built-in with Samkoon GT/GX HMI+PLCs by display, fixed I/O, analogue/temperature, motion, protocols and software.

Short answer

What does this page recommend?

A technical alternative, not a drop-in substitute

Samkoon GT and GX models can be evaluated within the same purchasing intent as UniStream Built-in for compact machines that need a screen, PLC and defined I/O in one enclosure. UniStream expansion, protocols, web/cloud and UniLogic ecosystem are not treated as model-level equivalents; every I/O and software duty is revalidated.

Samkoon

ProControl products to evaluate first

The exact configuration is selected after engineering review.

GT-070-26MR-1TC1AI-G
Samkoon

GT-070-26MR-1TC1AI-G

7-inch HMI+PLC candidate for compact machines needing 16 DI, 10 relay outputs, one thermocouple and one analogue input.

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GX-070-32MT-4AI2AO-G
Samkoon

GX-070-32MT-4AI2AO-G

7-inch HMI+PLC, analogue-focused candidate in the 16 DI, 16 transistor DO, 4 AI and 2 AO class.

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GT-070-32MT-8TC-G
Samkoon

GT-070-32MT-8TC-G

7-inch HMI+PLC candidate for temperature/motion applications needing 16 DI/16 transistor DO, eight thermocouples and high-speed pulse outputs.

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Technical comparison

Similar requirement, different architecture

The table explains product architectures; it is not an exact order-code selection.

Validation areaUnitronics UniStream Built-inSamkoon / ProControl candidate
Single-enclosure architectureUniStream Built-in combines touchscreen HMI, PLC and defined built-in I/O options in one family; B5/B10 and R38/T42 codes are not the same I/O.The exact Samkoon GT/GX code determines display, DI/DO type and analogue/temperature channels; selection is not based on total I/O count alone.
Digital I/O and output typeUniStream Built-in variants offer relay or transistor outputs and different digital-I/O layouts; commons and electrical limits come from the hardware guide.GT-070-26MR is in the relay-output class; GX/GT-32MT candidates are transistor-output class. SINK/SOURCE, commons, load current and protection are verified from the exact diagram.
Analogue and temperature channelsUniStream analogue, RTD and thermocouple capabilities depend on the selected Built-in model and additional I/O modules.The GT-26MR candidate is in the 1 TC+1 AI class, GX-32MT-4AI2AO in 4 AI+2 AO, and GT-32MT-8TC in 8 TC; sensor type, resolution and isolation are checked separately.
High-speed counting and motionUniStream high-speed I/O and motion duties are assessed together with CPU, I/O model, axes and software functions.The official GT-32MT-8TC page lists four 200 kHz pulse outputs and high-speed counters; drive interface, pulse type, axis synchronisation and cycle time are proven in the application.
Communications and upper systemsUniStream can offer Ethernet/serial/CAN and web, VNC, SQL, MQTT or cloud functions in a model, licence and software context.On Samkoon, Ethernet, serial, optional 4G/Wi-Fi and protocols are verified on the exact model; an upper-system function is not treated as equal merely because a port exists.
Software, expansion and migrationUniStream Built-in projects combine HMI, ladder, hardware and communications in one UniLogic project; expansion capacity depends on the family architecture.The Samkoon GT/GX project is rebuilt in the SKTOOL/Samkoon logic environment. UniLogic projects, I/O tags, function blocks and web/cloud structures do not transfer automatically.
Suitable scenario

When is it worth evaluating?

  • Compact single-machine control where exact Samkoon code covers I/O count and type
  • Projects needing HMI, ladder and local I/O in one panel with limited upper-system functions
  • Modernisations where the UniLogic project, field wiring and safety logic can be redesigned
Migration gate

Before making a decision

  1. Record the full UniStream model, B5/B10 base and R38/T42 I/O code.
  2. Extract every DI/DO common, output type/current, analogue/TC/RTD sensor and isolation requirement.
  3. Measure high-speed counter, PTO, motion, expansion and maximum-cycle requirements.
  4. Validate Ethernet/serial/CAN, web/VNC/SQL/MQTT/cloud and user-security requirements separately.
  5. Test I/O, temperature/analogue scaling, pulse, fault response, restart and HMI flow on a wired prototype.
Frequently asked

Clear answers about alternatives and migration

Is this a drop-in replacement?

No. It is not a direct substitute until exact model, electrical, protocol-role, mechanical, software and certification checks pass.

What should I provide for selection?

The exact existing code, diagram or I/O list, PLC/network data, supply, environment and special functions in use.

Do the I/O numbers in a GT/GX model code show a direct match to UniStream connections?

No. Relay/transistor type, SINK/SOURCE, commons, load current, sensor type, isolation and high-speed-I/O behaviour must be verified at terminal level.

This content compares manufacturer-published data under the same project requirement; it does not guarantee direct substitution or project compatibility. ProControl engineering must validate exact model, revision, protocol, electrical, safety and environmental conditions.

Validate the match with an engineer

Share the exact existing code, I/O list, network and environment so we can identify the right solution without assumptions.

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