FAT-32MT-DC
Compact-motion candidate in the 16 DI/16 NPN transistor DO, four 200 kHz pulse-output and CAN-expansion class.
Open technical pageCompact PLC, networking and motion
Mitsubishi FX5U and Samkoon FAT/FAs/PRO: technical selection by duty class
Compare Mitsubishi FX5U with Samkoon FAT/FAs/PRO candidates by I/O, motion, Ethernet/serial networking, expansion, GX Works3 and migration.
Short answer
What does this page recommend?
A technical alternative, not a drop-in substitute
Samkoon FAT and FAs can be technical candidates for general machine-I/O control, while PRO targets motion-intensive applications. If Mitsubishi GX Works3, high-speed system bus, CC-Link IE and dedicated motion/device ecosystem must be retained, each function is separately proven in the exact configuration.
Samkoon
ProControl products to evaluate first
The exact configuration is selected after engineering review.
FAS-66MT-AC-E
High-I/O candidate in the 34 DI/32 transistor DO, AC-supply, Ethernet and expansion class.
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PRO-C16X16TB
1 GHz+FPGA-based candidate for heavier pulse/motion workloads; exact axis and instruction scope requires a PoC.
Open technical pageTechnical comparison
Similar requirement, different architecture
The table explains product architectures; it is not an exact order-code selection.
| Validation area | Mitsubishi Electric MELSEC iQ-F FX5U | Samkoon / ProControl candidate |
|---|---|---|
| CPU and program performance | FX5U-32M/64M/80M CPUs define program capacity, built-in I/O and performance class by exact model; FX5U, FX5UC, FX5UJ and FX5S are not the same CPU. | FAT, FAs and PRO are separate performance layers. Program size, instruction set, cycle time, retained memory and real-time behaviour are measured with the target application. |
| Built-in I/O and analogue | The FX5U model code determines DI/DO count and relay/transistor type; the family provides built-in analogue and expansion options. | FAT-32MT is in the 16/16 NPN class and FAS-66MT in the 34/32 transistor class. Analogue duties, electrical commons, load current and sensor type are verified with a separate module selection. |
| High-speed I/O and motion | FX5U provides high-speed counter, pulse and motion functions together with CPU, module, axis and GX Works3 configuration. | FAT-32MT is in the four 200 kHz pulse-output class; PRO is a candidate for heavier motion. Interpolation, axis count, pulse format, encoder and jitter are proven by PoC. |
| Ethernet and dedicated networks | FX5U uses built-in Ethernet/serial functions and Mitsubishi network/device integration through the exact CPU and expansion modules. | FAS-66MT-AC-E is in the Ethernet Modbus TCP/IP class; FAT-32MT in the serial and CAN-expansion class. CC-Link IE or Mitsubishi proprietary-protocol parity is not assumed. |
| System bus and expansion | FX5U expands through the Mitsubishi system bus with analogue, motion, communications and special-function modules. | Samkoon FAs/FAT use CAN-based expansion and plug-in options; module count, update time, power budget and isolation are verified for the exact combination. |
| GX Works3 and migration | An FX5U project is an integrated set of GX Works3 program, labels, function blocks, parameters, device comments and network configuration. | The SamSoar application is rewritten; Mitsubishi programs, function blocks, dedicated networks and parameters do not transfer directly. I/O, motion, communications and fault behaviour are accepted in comparative FAT. |
Suitable scenario
When is it worth evaluating?
- General machine control where Mitsubishi dedicated networking and motion ecosystem are not mandatory
- New projects where Modbus, serial communications, CAN expansion and pulse duties are covered by an exact Samkoon model
- Modernisations where the GX Works3 program and panel wiring can be redeveloped
Migration gate
Before making a decision
- Record the full FX5U CPU, expansion, network and motion-module codes.
- Extract DI/DO/analogue, relay/transistor, commons, HSC/PTO, axis and cycle requirements.
- Inventory Ethernet, serial, CC-Link IE, dedicated-device connections and GX Works3 function-block/parameter use.
- Verify performance, electrical, protocol and expansion scope for the exact Samkoon CPU/module combination.
- Test I/O, motion, network loss, retained data, restart and fault recovery in a wired FAT.
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.
Can an FX5U program be transferred directly to a Samkoon PLC?
No. The GX Works3 project and function-block structure do not transfer directly. The functional specification, I/O, state machines and timing are extracted and reimplemented in SamSoar.
Official manufacturer sources: Mitsubishi Electric MELSEC iQ-F CPU official page · Mitsubishi Electric iQ-F built-in functions official page · Samkoon PLC official family · Samkoon FAT-32MT-DC official page · Samkoon FAS-66MT-AC-E official page · Samkoon PRO-C16X16TB official page
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.