
6 inputs for thermocouples For sensor types J, K, N, S, B, R Additional direct raw value measurement Integrated terminal temperature compensation Configurable filter time The module is equipped with 6 inputs for J, K, N, S, B and R thermocouple sensors. The module has an integrated terminal temperature compensation.


Intel Atom 1.0 GHz processor with an additional I/O processor Onboard Ethernet, POWERLINK with poll response chaining and USB 3 slots for modular interface expansion CompactFlash as removable application memory 256 MB DDR2-SDRAM Controller redundancy possible Fanless The X20CP3585 controller is based on an Atom processor clocked at 1 GHz and equipped with 256 MB DDR2 SDRAM. USB, Ethernet, POWERLINK and removable CompactFlash are all included as standard features. A Gigabit Ethernet interface is a standard feature. For even more real-time network performance, the onboard POWERLINK interface supports poll response chaining mode (PRC). The controller is equipped with 3 slots available for X20 communication modules. Various bus and network systems can easily be integrated into the X20 system through the use of communication modules.

4 analog inputs Either current or voltage signal possible 16-bit digital converter resolution Simultaneous input conversion Very fast conversion time The module is equipped with 4 inputs with 16-bit digital converter resolution. It is possible to select between the current and voltage signal using different terminals.

| Product | |
| Article Number (Market Facing Number) | 6ES74070DA000AA0 | 6ES74070DA000AA0 |
| Product Description | SIMATIC S7-400, PS 407 POWER SUPPLY, 4A, 120/230V AC, 5V/4A DC |
| Product family | Not available |
| Product Lifecycle (PLM) | PM500:Discontinued Product or end of PLM & Support |
| Additional Product Information | |
| EAN | 4025515128427 |
| UPC | 662643197938 |
| Commodity Code | 85044090 |
| LKZ_FDB/ CatalogID | ST9-E5 |
| Product Group | 4463 |
| Group Code | R111 |
| Country of origin | Austria |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 2.291 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES71517FA210AB0 | 6ES71517FA210AB0 |
| Product Description | *** spare part *** SIMATIC DP, IM151-7 F-CPU for ET200S, 192 KB work memory with integrated PROFIBUS DP interface (9-pole D-sub socket) as DP Slave, without battery SIMATIC MMC required |
| Product family | Not available |
| Product Lifecycle (PLM) | PM410:Product cancellation |
| Additional Product Information | |
| EAN | 4025515080381 |
| UPC | 040892914481 |
| Commodity Code | 85371091 |
| LKZ_FDB/ CatalogID | ST9.76 |
| Product Group | 4A9G |
| Group Code | R152 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.571 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

The Siemens 6ES7331-1KF01-0AB0 is an SM 331 analog input module designed for SIMATIC S7-300 programmable logic controller systems. It provides 8 optically isolated analog input channels with 13-bit resolution for precise signal acquisition in industrial automation applications. The module supports versatile measurement types including voltage, current, resistance, and resistance temperature detectors. Compatible sensor types include PT100, NI100, NI1000, and LG-NI1000 RTDs with parameterizable characteristic linearization. Each channel can be independently configured for different signal ranges. The module operates with a 66 ms update time and features integrating measurement principle for noise suppression. Powered directly from the S7-300 backplane bus, it requires no external power supply for module electronics. The unit connects via a 40-pin front connector and is suitable for process monitoring, temperature measurement, and analog signal acquisition in manufacturing, building automation, and process control environments.
Item Details
- Brand Name: Siemens
- Manufacturer: Siemens
- Item Type Name: Analog Input Module
- Product Family / Series: SIMATIC S7-300
- Module Designation: SM 331
Product Specifications
- number_of_inputs: 8
- resolution: 13 bit with sign
- measurement_types: Voltage, Current, Resistance, RTD
- voltage_ranges: 0-10 V, ±10 V, 1-5 V, ±5 V, ±50 mV, ±500 mV, ±1 V
- current_ranges: 0-20 mA, 4-20 mA, ±20 mA
- resistance_ranges: 0-600 Ω, 0-6000 Ω
- rtd_types: PT100, NI100, NI1000, LG-NI1000 (standard/climatic)
- input_resistance_voltage: 100 kΩ (0-10 V, 1-5 V)
- input_resistance_resistance: 100 MΩ (600 Ω, 6000 Ω)
- voltage_accuracy: ±0.4% of range (±5 V, 10 V, 1-5 V, 0-10 V); ±0.3% (±50 mV, 500 mV, 1 V)
- current_accuracy: ±0.3% of range
- resistance_accuracy: ±0.3% of range
- rtd_accuracy: ±1 K (PT100, NI100 standard); ±0.8 K (PT100, NI100 climatic; NI1000, LG-NI1000)
- integration_time: 60/50 ms (parameterizable)
- conversion_time: 66/55 ms
- module_update_time: 66 ms
- isolation: Optical isolation
- power_supply: 5 V DC from backplane bus
- current_consumption: 90 mA max
- power_loss: 0.4 W typical
- permissible_input_voltage: 12 V DC continuous, 30 V DC max (1 s)
- permissible_input_current: 40 mA max
- max_cable_length_shielded: 200 m (50 m at 50 mV)
- common_mode_voltage: 2 V DC max
- connector_type: 1 x 40-pin
Measurements
- Weight: 0.2 kg

| Product | |
| Article Number (Market Facing Number) | 6ES78220AA060YA5 | 6ES78220AA060YA5 |
| Product Description | SIMATIC STEP 7 Basic V16; floating license; engineering software in the TIA Portal; software and documentation on DVD; license key on USB flash drive; class A; 6 languages: de,en,fr,es,it,zh; executable in Windows 7 (64-bit), Windows 10 (64-bit), Windows Server 2012R2 (64-bit), Windows Server 2016/2019 (64); for configuration of SIMATIC S7-1200 SIMATIC Basic Panels - - content: set (4x DVD + 1x USB) |
| Product family | Not available |
| Product Lifecycle (PLM) | PM490:Start of final year of support |
| Additional Product Information | |
| EAN | 4047622804421 |
| UPC | 804766971396 |
| Commodity Code | 85234910 |
| LKZ_FDB/ CatalogID | ST79-SW |
| Product Group | 4A6F |
| Group Code | R134 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.485 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES71934CD300AA0 | 6ES71934CD300AA0 |
| Product Description | *** Spare part *** SIMATIC DP, Terminal module TM-P15C23-A0 for ET 200S for power modules, 15 mm width, spring-type terminals (Cage Clamp) 2x3 terminal connections with terminal access to AUX1, AUX1 interrupted |
| Product family | Not available |
| Product Lifecycle (PLM) | PM410:Product cancellation |
| Additional Product Information | |
| EAN | 4025515059950 |
| UPC | 662643227468 |
| Commodity Code | 85389099 |
| LKZ_FDB/ CatalogID | ST76 |
| Product Group | 4467 |
| Group Code | R151 |
| Country of origin | Romania |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.139 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES73141AG140AB0 | 6ES73141AG140AB0 |
| Product Description | SIMATIC S7-300, CPU 314 Central processing unit with MPI, Integr. power supply 24 V DC, work memory 128 KB, Micro Memory Card required |
| Product family | CPU 314 |
| Product Lifecycle (PLM) | PM400:Announcement of product phase-out |
| Additional Product Information | |
| EAN | 4025515077695 |
| UPC | 040892550290 |
| Commodity Code | 85371091 |
| LKZ_FDB/ CatalogID | ST73 |
| Product Group | 4302 |
| Group Code | R132 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.694 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES73217BH000AB0 |
| Product Description | SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 16 DI, DC 24V, 20 PIN, PROCESS INTERRUPT, DIAGNOSTICS |
| Product family | Not available |
| Product Lifecycle (PLM) | PM500:Discontinued Product or end of PLM & Support |
| Additional Product Information | |
| EAN | 4025515060857 |
| UPC | Not available |
| Commodity Code | Not available |
| LKZ_FDB/ CatalogID | ST9-E5 |
| Product Group | Not available |
| Group Code | R111 |
| Country of origin | Not available |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.520 lb |
| Package size unit of measure | Not available |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES71421BD400XA0 | 6ES71421BD400XA0 |
| Product Description | ***Spare part*** SIMATIC DP, Extended module EM 142, ET 200X 4 DA DC 24V/2A, 5-pole M12,IP65 for all basic modules |
| Product family | Not available |
| Product Lifecycle (PLM) | PM500:Discontinued Product or end of PLM & Support |
| Additional Product Information | |
| EAN | 4025515058748 |
| UPC | 662643232264 |
| Commodity Code | 85389091 |
| LKZ_FDB/ CatalogID | ST9-E5 |
| Product Group | 4468 |
| Group Code | R111 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.639 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES72231PH000XA0 |
| Product Description | SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-21X CPU ONLY, 8 DI DC 24 V/ 8 DO RELAY FOR S7-21X CPU ONLY |
| Product family | Not available |
| Product Lifecycle (PLM) | PM500:Discontinued Product or end of PLM & Support |
| Additional Product Information | |
| EAN | 4025515160298 |
| UPC | Not available |
| Commodity Code | 85389091 |
| LKZ_FDB/ CatalogID | ST9-E5 |
| Product Group | 2283 |
| Group Code | R111 |
| Country of origin | United States of America |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.593 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES79720CB200XA0 | 6ES79720CB200XA0 |
| Product Description | *** SPARE PART*** SIMATIC S7, PC ADAPTER USB F. CONNECTION OF S7-200/300/ 400, C7; WITH USB-CABLE (5M) CAN BE USED UNDER WINXP/VISTA/ WINDOWS 7 32/64BIT |
| Product family | Not available |
| Product Lifecycle (PLM) | PM500:Discontinued Product or end of PLM & Support |
| Additional Product Information | |
| EAN | 4019169101325 |
| UPC | 662643229493 |
| Commodity Code | 85176200 |
| LKZ_FDB/ CatalogID | ST9-E5 |
| Product Group | 4227 |
| Group Code | R111 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 1.082 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES73221FH000AA0 | 6ES73221FH000AA0 |
| Product Description | SIMATIC S7-300, Digital output SM 322, Isolated 16 DO, 120/230 V AC, 1 A, 1x 20-pole |
| Product family | SM 322 digital output modules |
| Product Lifecycle (PLM) | PM400:Announcement of product phase-out |
| Additional Product Information | |
| EAN | 4019169350600 |
| UPC | 662643170955 |
| Commodity Code | 85389091 |
| LKZ_FDB/ CatalogID | ST73 |
| Product Group | 2288 |
| Group Code | R151 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.717 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES75152TM010AB0 | 6ES75152TM010AB0 |
| Product Description | *** spare part *** SIMATIC S7-1500T, CPU 1515T-2 PN, central processing unit with work memory 750 KB for program and 3 MB for data, 1st interface: PROFINET IRT with 2-port switch, 2nd interface, Ethernet, 30 ns bit performance, SIMATIC Memory Card required |
| Product family | Not available |
| Product Lifecycle (PLM) | PM410:Product cancellation |
| Additional Product Information | |
| EAN | 4047623406365 |
| UPC | 804766333910 |
| Commodity Code | 85371091 |
| LKZ_FDB/ CatalogID | ST73 |
| Product Group | X0QO |
| Group Code | R251 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 1.982 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES71513AA230AB0 | 6ES71513AA230AB0 |
| Product Description | *** spare part *** SIMATIC DP, interface module IM 151-3 PN ST for ET 200S transfer rate 100 Mbps max. 63 power, electronic or motor starter modules up to 2 m width can be connected; 2x bus connections via RJ45 incl. termination module |
| Product family | Not available |
| Product Lifecycle (PLM) | PM410:Product cancellation |
| Additional Product Information | |
| EAN | 4025515076339 |
| UPC | 662643400885 |
| Commodity Code | 85176200 |
| LKZ_FDB/ CatalogID | ST76 |
| Product Group | 4467 |
| Group Code | R151 |
| Country of origin | Germany |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.443 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

| Product | |
| Article Number (Market Facing Number) | 6ES76470BA001YA2 | 6ES76470BA001YA2 |
| Product Description | SIMATIC IOT2050; 2x Gbit Ethernet RJ45; Display port; 2x USB2.0; 16 GB eMMC; SD card slot; 24 V DC industrial power supply |
| Product family | Ordering Data Overview |
| Product Lifecycle (PLM) | PM300:Active Product |
| Additional Product Information | |
| EAN | 4034106033590 |
| UPC | 195125050433 |
| Commodity Code | 85176200 |
| LKZ_FDB/ CatalogID | IC10 |
| Product Group | 4A99 |
| Group Code | R133 |
| Country of origin | China |
| SCIP number | Not available |
| Delivery information | |
| Net Weight (lb) | 0.959 lb |
| Package size unit of measure | Inch |
| Packaging Quantity | 1 |

PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.
Programmable logic controllers are ruggedized industrial computers that execute control logic for machine and process automation, handling digital and analog I/O, motion coordination, and network communication in real time across manufacturing and infrastructure environments. PLC Direct supplies programmable logic controllers as an independent supplier, carrying surplus sealed, refurbished, and used hardware for maintenance and replacement in installed automation systems.
Where Are Programmable Logic Controllers Used in Industrial Environments?
Programmable logic controllers are used wherever automated machine or process control requires deterministic, scan-based logic execution across digital and analog field signals. These controllers are installed across virtually every sector of industrial operations, from individual machine control panels to plant-wide distributed automation architectures.
Facilities and operations that depend on programmable logic controllers include:
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Discrete manufacturing plants running assembly line automation, machine sequencing, and multi-axis motion control.
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Food and beverage processing facilities managing conveyor systems, batch recipes, and filling line control.
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Water and wastewater treatment plants controlling pump stations, dosing systems, and distributed process equipment.
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Automotive and metal fabrication operations requiring high-speed discrete I/O and coordinated production line control.
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Packaging, material handling, and logistics operations where flexible, modular control architectures support high-mix production environments.
Maintenance engineers and procurement teams sourcing replacement programmable logic controllers depend on the availability of both current-generation and legacy hardware to keep installed systems running without redesigning existing control architectures.
Which Brands of Programmable Logic Controllers Does PLC Direct Stock?
PLC Direct stocks programmable logic controllers across the major control platform brands deployed in installed automation systems worldwide.
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Siemens SIMATIC S7 series: S7-300 and S7-400 modular controllers confirmed in stock, covering mid-range and high-end machine and process control applications across manufacturing and process industries.
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Schneider Electric Modicon M340 and M580: Mid-range and high-end PAC platforms for machine and process control, with Modicon Quantum 140CPU series also stocked for larger installed process automation environments.
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Mitsubishi Electric MELSEC iQ-R, Q Series, and FX5: Controller hardware spanning high-performance iQ-R CPUs, modular Q Series processors, and compact FX5 units for machine control applications across discrete manufacturing.
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Omron Sysmac NX Series: NX1P2 CPU modules and associated I/O for Omron's machine automation platform, suited to packaging, assembly, and process control installations using EtherCAT and EtherNet/IP communication.
PLC Direct carries programmable logic controllers as surplus sealed, refurbished, and used hardware, giving maintenance teams and procurement managers options across condition grades and budget requirements.
What Should You Know Before Ordering Programmable Logic Controllers?
Hardware condition options: PLC Direct supplies programmable logic controllers in surplus sealed, refurbished, and used condition. Surplus sealed units are factory-sealed stock that has not been previously installed; refurbished controllers have been inspected and tested to confirm operational functionality; used hardware is sourced from decommissioned systems and suits facilities managing lifecycle replacements under budget constraints.
Compatibility and part identification: Programmable logic controllers are platform-specific, and CPU modules, I/O expansion, power supplies, and communication modules must be matched to the correct rack, backplane, and firmware environment for the installed system. Confirm the CPU part number, series designation, and any firmware or version requirements from existing system documentation before ordering. For legacy platforms such as the SIMATIC S7-300 and S7-400 or Modicon Quantum, verify rack slot and power supply compatibility as part of the identification process.
Warranty: All programmable logic controller hardware purchased from PLC Direct carries a standard 1-year PLC Direct warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products.
PLC Direct supplies programmable logic controller hardware for replacement and maintenance purposes and does not provide system design, programming, or integration services.





