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MANUFACTURER: Schneider Electric 
DESCRIPTION: Unity Processor 1056 Kb - 66 Mhz - Coated 
PRODUCT TYPE INFO: Modicon Quantum 


2 Year warranty


Part Number140CPU43412UC
ManufacturerSchneider Electric
SeriesModicon Quantum
Model #140CPU43412UC
Warranty2 Year
Module formatStandard
Product or component typeUnity processor
Clock frequency66 MHz
Number of slots10
Number of racks2 - local rack(s)
Number of distributed I/O station63 station(s) - 1 rack(s) - 3 Modbus Plus network(s)
Number of remote I/O station31 - 2 S908 remote I/O rack(s)
0 - 0 ethernet remote I/O rack(s)
Discrete I/O number8000 inputs, 8000 outputs - distributed - per network Modbus Plus
Unlimited (26 slots max) - local
31744 inputs, 31744 outputs - remote
Analogue I/O numberUnlimited (26 slots max) - local
1984 inputs,1984 outputs - S908 remote I/O
500 inputs, 500 outputs - distributed - per network Modbus Plus
Application specific I/OHigh-speed interrupt inputs
Accurate time stamping
Serial link
Number of optional modules6 ( Ethernet, Modbus, Modbus Plus, Profibus DP, Sy/Max)
Maximum number of connections2 ( AS-Interface) - distributed
2 ( Modbus) - RS232/485 Modbus/ASCII
4 ( AS-Interface) - remote
6 ( Ethernet TCP/IP) - local
6 ( Modbus Plus) - local
6 ( Profibus DP) - local
Integrated connection type1 Modbus Plus with
2 Modbus with
ChecksProcess control
Memory descriptionInternal RAM 1056 kB
Switch functionKey switch memory start/stop memory protection
Slide switch communication port : ASCII/RTU/Memory
Application structure1 cyclic/periodic master task -
1 periodic fast task -
16 timer interrupt tasks -
64 I/O interrupt tasks -
64 interrupt tasks -
No auxiliary task -
Execution time per instruction0.1...0.27 µs floating points
0.1...0.27 µs on fixed-point arithmetic
0.12...0.585 µs Boolean
0.12...0.585 µs on word
Number of instructions per ms1.86 Kinst/ms if 100 % Boolean
2.49 Kinst/ms if 65 % Boolean and 35 % numerical
System overhead1 ms - master task
0.2 ms - fast task
Bus current requirement1800 mA
Local signalling1 LED green for communications are active on the Modbus Plus port (Modbus Plus)
1 LED green for communications are active on the Modbus port (Modbus)
1 LED green for CPU has been started and is solving logic (RUN)
1 LED green for CPU has passed the power-up diagnostic tests (READY)
1 LED orange for write-protected memory (memory port)
1 LED red for battery needs replacing or is not present (BAT LOW)
1 LED red for communications error on the Modbus Plus port (ERROR A)

Our Repair Services

MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.

Repair Benefits

MRO can restore your failed 140CPU43412UC to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.

Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2 year warranty.

Our technicians have vast experience with most manufacturers and models. In addition to this 140CPU43412UC we also repair drives, motors, PLCs and more, so if you don’t see the model you need, please contact us.

Core Exchange

If you are interested in getting credit for your faulty 140CPU43412UC, just let us know and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.

  • Shipping Weight : 1lb

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Ask about exchanging your faulty 140CPU43412UC for credit when ordering from MRO Electric

MRO Electric provides a 2-year warranty on every item we sell and repair. We stand behind all of our products and guarantee them for the full 2 years. If there is an issue with any of our products within the warranty period, we will evaluate the unit and repair or replace it under warranty.

Additional Information

Product Description

The 140CPU43412UC is a Unity Processor 1056 Kb - 66 Mhz - Coated that is manufactured by Schneider Electric. These products are manufactured in France and are designed for Material handling, packaging, and textile machines usage. All of the products in the modicon-quantum line come with a 2 year warranty from MRO Electric. We also carry CPU from other manufacturers such as Modicon and ABB.

Related Products

Check out the rest of our Schneider Electric product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or sending us an email at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 140CPU43412UC, take a look at more from our Robotics line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 140CPU43412UC products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.

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