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Brand: Schneider Electric
Schneider Electric TM258LF42DT M258 Logic Controller 42 I/O
Description
TM258LF42DT M258 compact controller with 42 I/O
The TM258LF42DT is a Schneider Electric product listed in the datasheet as: logic controller, Modicon M258, compact base, 42 IO, 24V DC, CANopen. The TM258LF42DT is a Modicon M258 compact base controller with 42 on-board discrete I/O and a CANopen port. It targets machines with fast counting and motion-style tasks that outgrew a smaller controller. Seven Star LLC supplies the TM258LF42DT in Oman and the GCC as an independent supplier based in Muscat.
Reading the reference: TM258 is the M258 controller range, 42 the number of I/O points, and the datasheet title adds 24 V DC and CANopen. The datasheet carries lifecycle notices, so this reference is mainly a spare or replacement part.
Technical specifications of the TM258LF42DT
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Schneider Electric / TM258LF42DT |
| Description | logic controller, Modicon M258, compact base, 42 IO, 24V DC, CANopen |
| Range of Product | Modicon M258 |
| Product or Component Type | Logic controller |
| Product Specific Application | – |
| Discrete I/O number | 42 |
| Discrete output number | 12 output; 4 fast output |
| Discrete input number | 10 fast input; 12 input; 4 regular input |
| Discrete input logic | Sink fast input; Sink regular input; Source input |
| Discrete input voltage | 24 V |
| Discrete input voltage type | DC |
| Voltage state 1 guaranteed | >= 15 V fast input; >= 15 V fast output; >= 15 V regular input |
| Voltage state 0 guaranteed | <= 5 V fast input; <= 5 V fast output; <= 5 V regular input |
| Discrete input current | 4 mA fast input; 4 mA regular input |
| Input impedance | 6 kOhm fast input; 6 kOhm regular input |
| Configurable filtering time | 0 ms fast input/regular input and fast output; 1.5 ms fast input/regular input and fast output; 12 ms fast input/regular input and fast output |
| Anti bounce filtering | 2 µs–4 ms configurable fast input/regular input and fast output |
| Maximum cable distance between | <30 m fast input |
| devices | <30 m fast output; <30 m regular input |
| Isolation between channels and | 500 Vrms AC |
| Isolation between channels | None |
| Discrete output logic | Source |
| Discrete output voltage | 24 V DC |
| Output voltage limits | 19.2 to 28.8 V |
| Discrete output current | 4 mA fast output |
| [Us] rated supply voltage | 24 V DC embedded expert modules power; 24 V DC I/O power segment; 24 V DC main supply |
| Supply voltage limits | 20.4 to 28.8 V |
| Line Rated Current | 0.04 A embedded expert modules power; 10 A I/O power segment; 0.26 A main supply |
| Peak current | 100 kA <= 70 smain supply; 25 kA <= 500 sI/O power segment; 50 kA <= 150 sembedded expert modules power; 1.2 A > 70 smain supply |
| Power Consumption in W | 13.03 W |
| Memory description | Flash 128 MB; Internal RAM 64 MB |
| Realtime clock | Without any user calibration clock, clock drift < 30 s/month at 25 °C; With user calibration clock, clock drift <= 6 s/month |
| Data backed up | Variables of type retain and retain persistent CR2477M Renata, 1.5 years |
| Integrated connection type | 1 isolated serial link female RJ45 Modbus master/slave RTU/ASCII or character mode ASCII RS232/RS485 300 to 115200 bps |
| Transmission rate | 125 kbit/s 500 m CANopen; 250 kbit/s 250 m CANopen; 50 kbit/s 1000 m CANopen; 500 kbit/s 100 m CANopen; 10 kbit/s 5000 m CANopen |
| Counting input number | 8 200 kHz |
| Local signalling | 1 LED per channel I/O state; 1 LED CAN0 STS; 1 LED MBS COM; 1 LED green/red APP0; 1 LED green/red APP1 |
| Mounting Support | Symmetrical DIN rail |
| Width | 175 mm |
| Height | 99 mm |
| Depth | 85 mm |
| Net Weight | 0.55 kg |
Fast inputs, outputs and counting on the TM258LF42DT
I/O points: 42. Inputs: 10 fast input; 12 input; 4 regular input. Outputs: 12 output; 4 fast output. Counting inputs: 8 200 kHz. Input filtering: 2 µs–4 ms configurable fast input/regular input and fast output. Power consumption: 13.03 W. Memory: Flash 128 MB; Internal RAM 64 MB.
What distinguishes this controller from the M221 and M241 families is the larger number of fast inputs and outputs and the built-in counters up to 200 kHz as shown in the table. They suit encoders, flow pulses and high-speed registration marks.
Lifecycle, spares and alternatives for the TM258LF42DT
The datasheet marks the reference as discontinued with an end-of-service date. A plant that already runs it should keep a spare, back up the project and plan a migration path, for example to an M241 or an M262 controller, with the I/O check first.
Migration cannot be done by reference matching alone: fast I/O, CANopen settings and retained variables behave differently on each controller, so allocate commissioning time.
The datasheet downloaded for this page carries lifecycle notices: Discontinued on: Jun 30, 2026; To be end-of-service on: Jun 30, 2031. For a plant that already runs this reference that makes the TM258LF42DT a spare-and-replacement item, and it is worth fixing the stock level and the long-term successor plan at the same time. We can discuss compatible alternatives once we know the installation.
Spare-part checklist for the TM258LF42DT
- Exact reference including suffix; confirm with the machine documentation.
- Firmware level on the installed unit and the programming software version.
- Project backup and retain-variable plan.
- Wiring: removable terminals make replacement quick.
- CANopen baud rate and node settings.
- Plan for end-of-service and the successor controller.
Replacing and commissioning the TM258LF42DT
Remove power, unplug the terminals, swap the controller on the rail, reconnect the terminals and the fieldbus cables. Reload the project from the programming software and compare the firmware.
After download, check I/O states one by one, test the fast inputs with the real encoder or sensor, and check the CANopen devices appear on the network.
Typical applications of the TM258LF42DT in Oman and the GCC
In Oman and the GCC controllers of this class are found on older packaging, bottling and process skids. A spare unit shortens downtime where a machine builder left no local support.
Dimensions, environment and approvals of the TM258LF42DT
For the TM258LF42DT, plan the mounting space from the datasheet: 175 mm (W) x 99 mm (H) x 85 mm (D). The TM258LF42DT weighs 0.55 kg. Mounting, derating and enclosure choices follow the environmental data below, which should be compared with the actual panel temperature and the dust and humidity of the site in Oman and the GCC.
Ambient temperature limits in the datasheet: 0 to 55 °C without derating horizontal installation. Relative humidity: 5 to 95 % without condensation. Ingress protection: IP20 IEC 61131-2. Operating altitude: 0 to 2000 m. Vibration resistance: 1 gn 8.4 to 150 Hz DIN rail; 3.5 mm 5 to 8.4 Hz DIN rail. Shock resistance: 15 gn 11 ms. Standards listed: UL 508; CSA C22.2 No 142; IEC 61131-2; CSA C22.2 No 213. Certifications listed for this reference: GOST-R cULus; C-tick; CSA.
Information to send with an RFQ for the TM258LF42DT
- Full reference and quantity required
- Existing equipment, panel or rack it must fit
- Supply voltage, load or signal details of the application
- Required delivery location and timing
- Whether a spare, a replacement or a new installation
Documents and quotation
A datasheet for this product is attached on this page. It lists the electrical, mechanical and environmental data summarised above.
Send us the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and does not represent itself as an official channel of the manufacturer.
Datasheets & Documents
- Datasheet Schneider Electric TM258LF42DT Datasheet Download
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About brand
Schneider Electric is the French group for energy management and industrial automation: low and medium voltage switchgear and circuit breakers, motor control, drives, PLCs, power monitoring, UPS systems and building management. Its history goes back to 1836, when the brothers Adolphe and Eugène Schneider took over the iron and steel works at Le Creusot in Burgundy. Over the 20th century the company left steel and heavy engineering and became an electrical group through acquisitions such as Merlin Gerin, Télémécanique, Square D and Modicon. Its head office is in Rueil-Malmaison near Paris, and its shares are listed on Euronext Paris.
Schneider Electric company profile
| Origins | 1836, Le Creusot, France: Adolphe and Eugène Schneider take over the Le Creusot foundry |
|---|---|
| Headquarters | Rueil-Malmaison (Paris region), France |
| Ownership | Public company listed on Euronext Paris |
| Key acquisitions | Télémécanique (1988), Square D (1991), Merlin Gerin (1992), Modicon (1997), APC (2007), Invensys (2014); majority owner of AVEVA software |
| Brand names still in use | Acti9, ComPacT and MasterPacT breakers, TeSys motor control, Altivar drives, Altistart soft starters, Modicon PLCs, Harmony control components, PowerLogic and Easergy protection and metering, APC UPS, EcoStruxure software platform |
| Product families | Low voltage distribution, medium voltage switchgear and protection relays, motor control and drives, PLCs and HMIs, power meters, UPS and cooling, enclosures, building automation and energy software |
Milestones
- 1836: The Schneider brothers acquire the Le Creusot works; the business grows in steel, locomotives and heavy engineering.
- 1975: First investment in Merlin Gerin, a French maker of electrical distribution equipment.
- 1988–1992: Télémécanique, Square D (USA) and Merlin Gerin join the group, making it an electrical specialist.
- 1997: Modicon, the company behind the first programmable logic controller, joins the group.
- 1999: The group takes the name Schneider Electric.
- 2007 and 2014: APC (UPS and data centre power) and Invensys (process automation) are acquired.
Choosing Schneider Electric breakers and motor control
Circuit breakers are chosen by current and breaking capacity. Acti9 miniature circuit breakers (iC60, C120) protect final circuits up to 125 A. ComPacT NSX molded case breakers cover about 16 to 630 A, and the letter after the frame size sets the breaking capacity: B, F, N, H, S, L from lowest to highest. MasterPacT air circuit breakers are used as main incomers on large switchboards. For motors, a TeSys contactor with an LRD overload relay or a GV2 motor circuit breaker suits direct starting, an Altistart soft starter reduces starting current, and an Altivar drive controls speed. The breaking capacity must always be at least the prospective short-circuit current at the point of installation.
Where Schneider Electric products are used
In Oman and the GCC, Schneider Electric equipment is found in main and sub-main switchboards of commercial and residential buildings, motor control centres in water, oil and gas and industrial plants, substations protected by Sepam and Easergy relays, data centres powered by Galaxy and APC UPS systems, and buildings controlled by EcoStruxure Building Operation.
APC by Schneider Electric: UPS and critical power
Since 2007, APC has been part of Schneider Electric and is now its product brand for uninterruptible power supplies, replacement batteries, battery packs, network management cards and rack power distribution. Our APC catalogue covers Smart-UPS line-interactive and on-line models, Easy UPS On-Line, the modular Symmetra LX, RM and PX ranges, Silcon three-phase systems and their spare part kits, and the RBC cartridges that keep them running. Schneider Electric breakers, drives and PLCs can be quoted together with APC UPS systems in one request.
Schneider Electric products we list
| Family | Examples |
|---|---|
| Circuit breakers | Acti9 iC60N, C120N, NSX100F, NSX250N, NSX630, EasyPact EZC, MasterPacT MTZ1, MasterPacT NW |
| Motor control | TeSys Deca LC1D, TeSys F, LRD overload relay, GV2ME08, Altistart 22, Altistart 480 |
| Drives | Altivar 12, Altivar 320, ATV340, Altivar Process 630, ATV930, Lexium 32 servo |
| PLCs, HMIs and relays | Modicon M221, M241, M580 BMEP582040, Zelio Logic, Magelis HMISTU655 |
| Protection, metering and power | Sepam series 20, Easergy P3U30, MiCOM P139, PM5560, iEM3255, Galaxy VS UPS |
Ordering Schneider Electric products: what we need
Send the commercial reference from the label (for example LC1D18M7 or ATV320U22N4C). For breakers, confirm the rated current, number of poles, breaking capacity and trip unit. For contactors, give the coil voltage. For drives, give the motor power and supply voltage. APC products are listed on their own brand page.
Facts checked against Schneider Electric's published company history, October 2026.
Browse Schneider Electric products by category: Circuit Breaker, Electrical & Power Modules, AC Drives, PLC & I/O Cards, Metering Systems, UPS and Batteries.
FAQ
Questions about the Schneider Electric TM258LF42DT M258 Logic
Answers from our engineering team on installation, compatibility and integration.
01How many I/O has the TM258LF42DT?
The datasheet states 42.
02What supply voltage does the TM258LF42DT use?
It is 24 V DC embedded expert modules power; 24 V DC I/O power segment; 24 V DC main supply.
03What fieldbus does it have?
Datasheet: 125 kbit/s 500 m CANopen; 250 kbit/s 250 m CANopen; 50 kbit/s 1000 m CANopen; 500 kbit/s 100 m CANopen; 10 kbit/s 5000 m CANopen; 1000 kbit/s 4 m CANopen; 20 kbit/s 2500 m CANopen.
04How many counting inputs?
Listed: 8 200 kHz.
05What memory does the TM258LF42DT have?
Listed: Flash 128 MB; Internal RAM 64 MB.
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