
The FX3S-14MR/ES is an entry-level compact programmable logic controller (PLC) CPU main unit from Mitsubishi Electric's MELSEC-F series. This all-in-one unit integrates power supply, CPU, and I/O in a single module, featuring 8 digital inputs (24V DC, sink/source) and 6 relay outputs, providing a total of 14 I/O points. The unit operates on 100-240V AC power supply and includes 16K steps of EEPROM program memory. Built-in features include high-speed counters and positioning outputs. The FX3S supports multiple programming languages including ladder diagram, function block diagram, structured text, and sequential function chart. With a compact IP10 protection class design, fast instruction cycle times (210ns for contact instructions), and integrated RS-422 and USB communication ports, this PLC is ideal for small-scale automation applications in manufacturing, packaging, and material handling systems.
Item Details
- Brand Name: Mitsubishi
- Manufacturer: Mitsubishi Electric
- Item Type Name: Compact PLC CPU Main Unit
- Product Family / Series: MELSEC-F
- Series: FX3S
Product Specifications
- power_supply: 100-240 V AC
- integrated_digital_inputs: 8
- input_voltage: 24 V DC
- input_type: Sink/Source
- integrated_digital_outputs: 6
- output_type: Relay
- total_io_points: 14
- local_io_points: 30
- program_memory: 16K steps
- program_memory_type: EEPROM
- auxiliary_relays: 1536 points
- timers: 138 points
- counters: 67 points
- data_registers: 3000 points
- file_registers: 2000 points
- cycle_time_ld: 210 ns
- cycle_time_mov: 500 ns
- power_consumption: 19 W
- protection_class: IP10
- operating_temperature_min: 0 °C
- expandable: No
- usb_ports: 1
- rs422_ports: 1
Additional Details
- Country of Origin*: Japan
- Certifications / Approvals: CE, UL, cUL, EAC, UKCA, ABS, BV, DNV GL, LR, NK
- Rohs Compliance: Compliant
- Weee Category: B2B
- Commodity Code: 85371091
- Programming Languages: Ladder diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Sequential Function Chart (SFC)
*Country of origin may vary.
All PLC Direct products come with a 1-year warranty. The warranty is issued by PLC Direct. Warranty coverage commences at the date of purchase. The warranty is for mechanical defects or failures not caused by human factors including but not limited to (a) incorrect installation, (b) operating the unit in sub-optimal conditions or in scenarios not recommended by the manufacturer, (c) poor unit maintenance, etc. The warranty does not cover programming or software related issues.
If the product is eligible for PLC Direct’s warranty coverage and the customer encounters an issue with the product, we will request the item is shipped to us for diagnosis and examination. Regardless of the cause of product issues, the customer will bear responsibility for the cost of shipping the unit to PLC Direct for evaluation. Where the unit was damaged by human factors, we will offer a repair or replace quote; in cases where damage was caused by human factors, the customer is responsible for the cost of shipping the repaired/replaced unit from PLC Direct to the customer. Where the unit was not damaged by human factors but is covered by PLC Direct’s warranty, we will repair or replace the unit at our cost (or, in rare cases, refund you your purchase); in such cases, PLC Direct will bear the cost of shipping the repaired or replaced product back to the customer. It is up to PLC Direct’s discretion whether to repair, replace, or refund the customer in such cases. Diagnoses can take time to complete based on technician availability and the complexity of diagnosis.
In no event shall PLC Direct be liable for any damages except actual damages up to, but not exceeding, the amount paid to us for the product, including we shall not be liable for any consequential or indirect damages or lost profits whether or not advised of same.
PLC Direct offers free shipping worldwide. Product ship from a various warehouses worldwide based on the customer's and the product's location. The estimated delivery date on the product page is PLC Direct's best estimated assuming a US-based shipping destination.
Regardless of where the product is shipping from, PLC Direct covers all duties for US-based shipping destinations. For non-US-based shipping destinations, customers are responsible for duties as appropriate.
PLC Direct's focus is on balancing price with lead time. Some but not all products can be expedited. If you have questions about delivery ETAs, please contact our team.

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