Home / Mitsubishi Electric (Factory Automation) / Mitsubishi MELSEC-F (FX) Series – Main Unit / FX3UC-32MT-LT-2 Mitsubishi MELSEC-F (FX) Series Main unit

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FX3UC-32MT-LT-2 Mitsubishi MELSEC-F (FX) Series Main unit

MPN: FX3UC-32MT-LT-2 · Brand: Mitsubishi Electric (Factory Automation)

Price on request

Discontinued by Mitsubishi Electric (Factory Automation) — we can still source the original FX3UC-32MT-LT-2 (new, used or refurbished, subject to availability). Request a quote below.

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12-month warranty (new) · 3-month (used/refurbished)

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Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSEC-F (FX) Series – Main Unit
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

Can I still buy the FX3UC-32MT-LT-2 now that it is discontinued?

Yes. Mitsubishi Electric (Factory Automation) has discontinued the FX3UC-32MT-LT-2, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.

When can FX3UC-32MT-LT-2 be shipped?

FX3UC-32MT-LT-2 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up FX3UC-32MT-LT-2 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for FX3UC-32MT-LT-2 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for FX3UC-32MT-LT-2, subject to availability and destination.

The Mitsubishi Electric FX3UC-32MT-LT-2 is a main unit in the MELSEC-F (FX) Series. DC Power Supply/DC Input Type Input: 16 points 24 V DC sink Output: 16 points Transistor sink. Mitsubishi Electric has discontinued it (2025/03 Discontinued); PartnerPLC sources discontinued Mitsubishi parts on the surplus market for maintenance of existing machines. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSEC-F (FX) Series
Category	Main unit
Sales status	2025/03 Discontinued (Mitsubishi Electric)
Outline	DC Power Supply/DC Input Type Input: 16 points 24 V DC sink Output: 16 points Transistor sink

Specifications

Operation control system	Stored program repetitive operation system (dedicated LSI) with interruption function
Input/output control system	Batch processing system (when END instruction is executed), Input/output refresh instruction and pulse catch function are provided.
Programming language	Relay symbol system + step-ladder system (SFC notation possible)
Program memory: Max. memory capacity	64000 steps Up to 64000 steps, including comment and file registers
Program memory: Built-in memory capacity/type	64000-step (Symbolic information can be stored. Supported in Ver. 3.00 or later.)/RAM (backed up by built-in lithium battery) Battery life: Approx. 5 years
Program memory: Memory cassette (Option)	[Ver. 3.00 or later] ・FX3U-FLROM-1M (2000/4000/8000/16000/32000/64000 steps, loader function, symbolic information can be stored in the dedicated area (1300 kB).) [Ver. 2.20 or later] ・FX3U-FLROM-64L (2000/4000/8000/16000/32000/64000 steps, loader function) ・FX3U-FLROM-64 (2000/4000/8000/16000/32000/64000 steps, no loader function) ・FX3U-FLROM-16 (2000/4000/8000/16000 steps, no loader function) [V
Program memory: Writing function during running	Provided (Program can be modified while the PLC is running.)
Program memory: Protection	Password protection provided (with entry code function)
Real-time clock: Clock function	Built-in 1980 to 2079 (with correction for leap year) 2- or 4-digit year, accuracy within ±45 seconds/month at 25°C
Kinds of instructions: Basic instructions	[Ver. 2.30 or later] ・Sequence instructions: 29 ・Step-ladder instructions: 2 [Former than Ver. 2.30] ・Sequence instructions: 27 ・Step-ladder instructions: 2
Kinds of instructions: Applied instructions	[Ver. 2.70 or later] 218 kinds, 497 instructions [Ver. 2.61 or later] 215 kinds, 492 instructions [Ver. 2.20 or later] 209 kinds, 486 instructions [Ver. below 2.20] 181 kinds, 407 instructions
Processing speed: Basic instructions	0.065 μs/instruction
Processing speed: Applied instructions	0.642 μs to several hundred μs/instruction
No. of input/output points: No. of input points	[Ver. 2.20 or later] (1) 248 points or less (Extension combined number) (1) + (2) total number of points is 256 or less. 240 points for the FX3UC-32MT-LT(-2). [Ver. below 2.20] (4) 240 points or less (Extension combined number) (4) + (5) total number of points is 256 or less.
No. of input/output points: No. of output points	[Ver. 2.20 or later] (2) 248 points or less (Extension combined number) (1) + (2) total number of points is 256 or less. 240 points for the FX3UC-32MT-LT(-2). [Ver. below 2.20] (5) 240 points or less (Extension combined number) (4) + (5) total number of points is 256 or less.
No. of input/output points: Remote I/O number of points: CC-Link	(3) 256 points or less (224 points or less when the FX2N-16CCL-M is used.) *The total number of remote I/O points in CC-Link and AnyWireASLINK must be 256 points or less.
No. of input/output points: Remote I/O number of points: AnyWireASLINK	(3) 128 points or less *The total number of remote I/O points in CC-Link and AnyWireASLINK must be 256 points or less.
No. of input/output points: Remote I/O number of points: AS-i	(3) 248 points or less
No. of input/output points: Total number of points	[Ver. 2.20 or later] (1) + (2) + (3) total number of points is 384 or less. (Extension combined number) [Ver. below 2.20] (4) + (5) total number of points is 256 or less. (Extension combined number)
Device: Input/output relay: Input relay	X000 to X357 240 points (octal) Extension combined
Device: Input/output relay: Output relay	Y000 to Y357 240 points (octal) Extension combined
Device: Auxiliary relay: For general	M0 to M499: 500 points The retentive status can be changed by parameter settings.
Device: Auxiliary relay: For keeping	M500 to M1023: 524 points The retentive status can be changed by parameter settings.
Device: Auxiliary relay: For keeping (battery backup fixed area)	M1024 to M7679: 6656 points This retentive status is a battery backup fixed area. The area characteristics cannot be changed.
Device: Auxiliary relay: For special	M8000 to M8511: 512 points
Device: State: Initial state	S0 to S9: 10 points The retentive status can be changed by parameter settings.
Device: State: For general	S10 to S499: 490 points The retentive status can be changed by parameter settings.
Device: State: For keeping 1	S500 to S899: 400 points The retentive status can be changed by parameter settings.
Device: State: For annunciator	S900 to S999: 100 points The retentive status can be changed by parameter settings.
Device: State: For keeping 2	S1000 to S4095: 3096 points This retentive status is a battery backup fixed area. The area characteristics cannot be changed.
Device: Timer (on delay): 100 ms	T0 to T191: 192 points (0.1 to 3,276.7 sec)
Device: Timer (on delay): 100 ms (for subroutine/interruption subroutine)	T192 to T199: 8 points (0.1 to 3,276.7 sec)
Device: Timer (on delay): 10 ms	T200 to T245: 46 points (0.01 to 327.67 sec)
Device: Timer (on delay): 1 ms accumulating type	T246 to T249: 4 points (0.001 to 32.767 sec) This retentive status is a battery backup fixed area. The area characteristics cannot be changed.
Device: Timer (on delay): 100 ms accumulating type	T250 to T255: 6 points (0.1 to 3,276.7 sec) This retentive status is a battery backup fixed area. The area characteristics cannot be changed.
Device: Timer (on delay): 1 ms	T256 to T511: 256 points (0.001 to 32.767 sec)
Device: Counter: 16 bits up	C0 to C99: 100 points (Counting from 0 to 32,767) The retentive status can be changed by parameter settings.
Device: Counter: 16 bits up (keeping)	C100 to C199: 100 points (Counting from 0 to 32,767) The retentive status can be changed by parameter settings.
Device: Counter: 32 bits up or down	C200 to C219: 20 points (Counting from -2,147,483,648 to +2,147,483,647) The retentive status can be changed by parameter settings.
Device: Counter: 32 bits up or down (keeping)	C220 to C234: 15 points (Counting from -2,147,483,648 to +2,147,483,647) The retentive status can be changed by parameter settings.
Device: High-speed counter	[32 bits High speed up/down (keeping)] Up to 8 points can be used in range from C235 to C255. ・Hardware counter 1-phase: 100 kHz, 10 kHz 2-phase: 50 kHz (1 edge count), 50 kHz (4 edge count) ・Software counter 1-phase: 40kHz 2-phase: 40 kHz (1 edge count), 10 kHz (4 edge count) There are restrictions on the points that can be used and input frequencies depending on the conditions used.
Device: Data register (32 bits when paired): 16 bits for general	D0 to D199: 200 points The retentive status can be changed by parameter settings.
Device: Data register (32 bits when paired): 16 bits for keeping	D200 to D511: 312 points The retentive status can be changed by parameter settings.
Device: Data register (32 bits when paired): 16 bits for keeping (File register)	D512 to D7999: 7488 points (D1000 and later can be set as file register points in 500-point units) This retentive status is a battery backup fixed area. The area characteristics cannot be changed.
Device: Data register (32 bits when paired): 16 bits for special	D8000 to D8511: 512 points
Device: Data register (32 bits when paired): 16 bits for index	V0 to V7, Z0 to Z7: 16 points
Device: Extension register	[16 bits] R0 to R32767: 32768 points This retentive status is a battery backup fixed area. The area characteristics cannot be changed.
Device: Extension file register	[16 bits] ER0 to ER32767: 32768 points Usable only when memory cassette is mounted
Device: Pointer: For branching of JUMP and CALL	P0 to P4095: 4096 points (For CJ instructions and CALL instructions, P63 jumps to END instruction)
Device: Pointer: Input interruption and input delay interruption	I00□ to I50□: 6 points
Device: Pointer: Timer interruption	I6□□ to I8□□: 3 points
Device: Pointer: Counter interruption	I010 to I060: 6 points (For HSCS instructions)
Device: Nesting	[For master control] N0 to N7: 8 points (For MC instructions)
Constant: Decimal number (K)	16 bits: -32,768 to +32,767 32 bits: -2,147,483,648 to +2,147,483,647
Constant: Hexadecimal number (H)	16 bits: 0 to FFFF 32 bits: 0 to FFFFFFFF
Constant: Real number (E)	32 bits: -1.0 × 2 128 to -1.0 × 2 -126 , 0, 1.0 × 2 -126 to 1.0 × 2 128 Decimal-point and exponential notations are possible.
Constant: Character string (" ")	Designation by characters enclosed with " " Up to 32 one-byte characters can be used for a constant in an instruction.

Power supply specifications

Rated voltage	24 V DC
Allowable supply voltage range	24 V DC, Voltage fluctuation range -15% +20%, Ripple Voltage (p-p) 5% or less Specifications of the voltage range changes according to the system configuration.
Allowable instantaneous power failure time	Operation can be continued upon occurrence of instantaneous power failure for 5 ms or less.
Power fuse	CPU, I/O operations power supply circuit: 125 V 3.15 A CC-Link/LT built-in power supply circuit: 125 V 0.8 A
Rush current	30 A max.0.5 ms / 24 V DC
Power consumption	9 W Power consumption changes according to the system configuration.
5 V DC built-in power supply	350 mA
Built-in power supply for CC-Link/ LT networks	24 V DC 350 mA

Input specifications

No. of input points	16 points
Input connection type	Connector
Input type	Sink
Input signal voltage	24 V DC -15% +20%, Ripple Voltage (p-p) 5% or less
Input impedance: X000 to X007	[X000 to X005] 3.9 kΩ [X006, X007] 3.3 kΩ
Input impedance: X010 or more	4.3 kΩ
Input signal current: X000 to X007	[X000 to X005] 6 mA/24 V DC [X006, X007] 7 mA/24 V DC
Input signal current: X010 or more	5 mA/24 V DC
ON input sensitivity current: X000 to X007	[X000 to X005] 3.5 mA or more [X006, X007] 4.5 mA or more
ON input sensitivity current: X010 or more	3.5 mA or more
OFF input sensitivity current	1.5 mA or less
Input response time	Approx. 10 ms X000 to X017 (up to the main unit built-in number) have built-in digital filters, which can be changed to 0 to 60 ms in 1 ms increments using the application instructions or D8020. The following is applied when 0 is set. X000 to X005: 5μs X006, X007: 50μs X010 to X017: 200μs
Input signal form	No-voltage contact input NPN open collector transistor
Input circuit insulation	Photocoupler insulation
Indication of input operation	Monitor by the display module

Output specifications

No. of output points	16 points
Output connection type	Connector
Output type	Transistor/sink output
External power supply	5-30 V DC
Max. load: Resistance load	1 output point/common terminal: 0.1 A or less (Y000 to Y003 is 0.3A/output 1 point) The total load current per common should be as follows: 8 output points/common: 0.8A or less (When the two COM□ terminals are connected outside the PLC, resistance load is 1.6A or less.)
Max. load: Inductive load	2.4 W/24 V DC (Y000 to Y003 is 7.2 W/24 V DC) Make sure that the total load of 16 inductive load points is 38.4W/24 V DC or less.
Min. load	－
Open circuit leakage current	0.1 mA or less/30 V DC
ON voltage	1.5 V or less
Response time: OFF→ON	Y000 to Y003: 5 μs or less/10-100 mA or more (5-24 V DC) Y004 or later: 0.2 ms or less/100 mA (24 V DC)
Response time: ON→OFF	Y000 to Y003: 5 μs or less/10-100 mA or more (5-24 V DC) Y004 or later: 0.2 ms or less/100 mA (24 V DC)
Insulation of circuit	Photocoupler insulation
Indication of output operation	Monitor by the display module

Built-in high-speed counter function

1-phase 1-count input	[C235 to C240] Up to 6 points: Up to 100 kHz When used High-speed comparison SET/RESET: 40 kHz When used High-speed zone compare HSZ: 40 - (number of instruction) [C244(OP), C245(OP)] Up to 2 points: Up to 10 kHz When used High-speed comparison SET/RESET: 10 kHz When used High-speed zone compare HSZ: 40 - (number of instruction) [C241 to C245] Up to 3 points: Up to 40 kHz When used High-speed comp
1-phase 2-count input	[C246, C248(OP)] Up to 2 points: Up to 100 kHz When used High-speed comparison SET/RESET: 40 kHz When used High-speed zone compare HSZ: 40 - (number of instruction) [C247 to C250] Up to 2 points: Up to 40 kHz When used High-speed comparison SET/RESET: 40 kHz When used High-speed zone compare HSZ: 40 - (number of instruction) When using High-speed comparison SET/RESET, the maximum total frequency t
2-phase 2-count input	[C251, C253] Up to 2 points: Up to 100 kHz When used High-speed comparison SET/RESET: 40 kHz When used High-speed zone compare HSZ: 40 - (number of instruction)
Built-in pulse output and positioning function	[C252, C253(OP), C254, C255] Up to 2 points: Up to 40 kHz When used High-speed comparison SET/RESET: 40 kHz When used High-speed zone compare HSZ: 40 - (number of instruction) When using High-speed comparison SET/RESET, the maximum total frequency that the PLC can process (multiplied by 4 for 2-phase 4-edge counter) is 80 kHz. When using High-speed zone compare HSZ, the total frequency processed b
Maximum frequency	3 independent axes
Programming language	100 kHz
Compatible main units	Sequence program
Pulse output instruction	Transistor output type main unit
Positioning instruction	・Pulse Y Output (PLSY) ・Acceleration/Deceleration Setup (PLSR) Pulse output form: Pulse train (The direction is controlled with the sequence.)

Built-in CC-Link/LT master function

Maximum number of link points	Built-in type CC-Link/LT master + "Additional CC-Link/LT master (FX2N-64CL-M) 7 maximum" Additional CC-Link/LT masters consume 190 mA/5 V DC from the PLC main unit or extension power supply unit. Make sure that the 5 V DC current consumption including other extension blocks and special function blocks does not exceed the supply capacity of the main unit or extension power supply unit.
Number of link points per station	[4-point mode, 16-point mode] 256 points (including the number of I/O points in each PLC) The maximum number of link points varies depending on the system configuration.
Link scan time 32 stations (Points)	[4-point mode] 4 points (8 points) [16-point mode] 16 points (32 points) () shows the number of link points when composite remote module is used.
Link scan time 32 stations (2.5 Mbps)	[4-point mode] 128 points [16-point mode] 256 points
Link scan time 32 stations (625 kbps)	[4-point mode] 0.7 ms [16-point mode] 1.0 ms
Link scan time 32 stations (156 kbps)	[4-point mode] 2.2 ms [16-point mode] 3.8 ms
Link scan time 64 stations (Points)	[4-point mode] 8.0 ms [16-point mode] 14.1 ms
Link scan time 64 stations (2.5 Mbps)	[4-point mode] 256 points [16-point mode] 256 points
Link scan time 64 stations (625 kbps)	[4-point mode] 1.2 ms [16-point mode] 2.0 ms
Link scan time 64 stations (156 kbps)	[4-point mode] 4.3 ms [16-point mode] 7.4 ms
Transmission speed	[4-point mode] 15.6 ms [16-point mode] 27.8 ms
Communication method	2.5 Mbps, 625 kbps, 156 kbps [FX3UC-32MT-LT-2] Set with GX Developer (Ver. 8.68W or later) or the display module. [FX3UC-32MT-LT] Set by DIP switch.
Network topology	BITR method (Broadcast polling + Interval Timed Response)
Error control system	T-branch
Number of connected stations	CRC
Remote station numbers	[Remote I/O station] 64 stations maximum [Remote device station (RD station)] 16 stations maximum
Built-in master station connection position	[Remote I/O station] Setting range: 1 to 64 [Remote device station (RD station)] Setting range: 49 to 64
RAS function	Connected at end of trunk line
Connection cable	Communication error detection, automatic return to disconnection and internal loop back diagnosis [FX3UC-32MT-LT-2] Executes with the display module. [FX3UC-32MT-LT] Executes with the DIP switch.
Number of occupied I/O points	Dedicated flat cable (0.75 mm 2 ×4) VCTF cable (Use a cable that complies with 0.75 mm 2 × 4 JIS C 3306.) High flexible cable (0.75 mm 2 ×4)

Specifications

Ambient temperature	0 to 55°C (32 to 131°F) when operating and -25 to 75°C (-13 to 167°F) when stored
Ambient humidity	5 to 95%RH (no condensation) when operating
Vibration resistance: Installed on DIN rail: Frequency: 10 to 57 Hz	Half amplitude: 0.035mm Sweep Count for X, Y, Z: 10 times (80 min in each direction) The criterion is shown in IEC61131-2.
Vibration resistance: Installed on DIN rail: Frequency: 57 to 150 Hz	Acceleration: 4.9 m/s 2 Sweep Count for X, Y, Z: 10 times (80 min in each direction) The criterion is shown in IEC61131-2.
Shock resistance	147 m/s 2 Acceleration, Action time: 11 ms, 3 times by half-sine pulse in each direction X, Y, and Z The criterion is shown in IEC61131-2.
Noise resistance	By noise simulator at noise voltage of 1,000 Vp-p, noise width of 1 μs, rise time of 1 ns and period of 30 to 100 Hz
Dielectric withstand voltage	Between batch of all terminals and ground terminal: 500 V AC for one minute
Insulation resistance	Between batch of all terminals and ground terminal: 5 MΩ or higher by 500 V DC insulation resistance tester
Grounding	Class D grounding (grounding resistance: 100 Ω or less) (Common grounding with a heavy electrical system is not allowed) Ground the PLC independently or jointly.
Working atmosphere	Free from corrosive or flammable gas and excessive conductive dusts
Working altitude	2000 m or less Do not use the PLC under pressure higher than the atmospheric pressure. Doing so may damage the PLC.