Siemens ET 200SP Modules

Technical Dossier

Product Details And Specifications

Siemens ET 200SP Series: Comprehensive Module Range and Technical Overview

The Siemens ET 200SP is a modular distributed I/O system designed for integration with SIMATIC S7-1500 and S7-1200 controllers via PROFINET or PROFIBUS. It is deployed across continuous-process industries including petrochemical refineries, nuclear power auxiliary systems, offshore platforms, pharmaceutical batch plants, and large-scale water treatment facilities. Its compact BaseUnit architecture — which eliminates the need for separate terminal blocks — reduces panel footprint by up to 30% compared to predecessor systems such as the ET 200S. The system supports up to 64 modules per station and operates across an extended temperature range, making it suitable for harsh industrial environments. As of 2026, the ET 200SP remains Siemens' primary distributed I/O platform for new SIMATIC TIA Portal-based installations globally.

The Evolution of ET 200SP Architecture

The ET 200SP was introduced in 2012 as the successor to the ET 200S, addressing limitations in wiring density, configuration flexibility, and communication throughput. The first-generation ET 200SP used BU type A0 and B0 BaseUnits with fixed potential group assignments. From 2015 onward, Siemens introduced High Feature (HF) variants across analog and digital module families, adding diagnostics per channel, HART communication support on analog inputs, and isochronous mode for motion-critical applications.

Between 2017 and 2020, Siemens expanded the CPU SP range — the ET 200SP Open Controller — enabling the station to operate as a standalone PLC without a separate S7-1500 rack, integrating Windows-based software execution on the same DIN rail. By 2022, the ET 200SP IM 155-6 PN HF interface module was updated to support PROFINET IRT with MRP redundancy, addressing requirements in high-availability process control loops. Older ET 200S modules (6ES7 13x-4xx series) are not electrically or mechanically compatible with ET 200SP BaseUnits; migration requires full module and BaseUnit replacement. Siemens has published migration guides (Entry ID 109478459) for this transition. The ET 200SP product line is currently in its active production phase with no announced end-of-life date as of Q1 2026.

ET 200SP Full Catalog & Functionalities (SKU List)

Interface Modules

• 6ES7155-6AU30-0CN0: IM 155-6 PN ST — PROFINET interface module, standard, max 32 modules per station
• 6ES7155-6AU01-0BN0: IM 155-6 PN HF — PROFINET interface module, high feature, IRT & MRP support
• 6ES7155-6BA01-0CN0: IM 155-6 DP HF — PROFIBUS DP interface module, high feature, max 64 modules

Digital Input Modules

• 6ES7131-6BF01-0BA0: DI 8x24VDC ST — 8-channel 24 VDC digital input, standard diagnostics
• 6ES7131-6BH01-0BA0: DI 16x24VDC ST — 16-channel 24 VDC digital input, standard diagnostics
• 6ES7131-6BF00-0CA0: DI 8x24VDC HF — 8-channel digital input, high feature, per-channel diagnostics

Digital Output Modules

• 6ES7132-6BF01-0BA0: DQ 8x24VDC/0.5A ST — 8-channel 24 VDC digital output, 0.5 A per channel
• 6ES7132-6BH01-0BA0: DQ 16x24VDC/0.5A ST — 16-channel 24 VDC digital output, standard
• 6ES7132-6BF00-0CA0: DQ 8x24VDC/0.5A HF — 8-channel digital output, high feature, short-circuit diagnostics

Analog Input Modules

• 6ES7134-6GD01-0BA1: AI 4xU/I 2-wire ST — 4-channel analog input, voltage/current, 2-wire transmitter support
• 6ES7134-6HB00-0BA1: AI 2xU/I HF — 2-channel analog input, high feature, HART communication, per-channel diagnostics
• 6ES7134-6JD00-0CA1: AI 4xRTD/TC 2-/3-/4-wire HF — 4-channel thermocouple/RTD input, high feature

Analog Output Modules

• 6ES7135-6HB00-0DA1: AQ 2xU/I HF — 2-channel analog output, ±10 V / 0–20 mA / 4–20 mA, 16-bit resolution, HART-capable, per-channel diagnostics, isochronous mode support
• 6ES7135-6GB00-0BA1: AQ 2xU/I ST — 2-channel analog output, standard, 13-bit resolution, voltage and current output
• 6ES7135-6HD00-0BA1: AQ 4xU/I ST — 4-channel analog output, standard, 13-bit resolution

Power / Potential Distribution Modules

• 6ES7193-6BP00-0DA0: PM-E 24VDC ST — Power module for load group isolation, 24 VDC, standard
• 6ES7193-6BP20-0DA0: PM-E 24VDC HF — Power module, high feature, diagnostics for supply voltage monitoring

Sourcing Hard-to-Find & Obsolete ET 200SP Parts

While the ET 200SP platform remains in active production, specific module variants — particularly first-generation ST modules with earlier firmware baselines and discontinued BaseUnit revisions — are no longer available through standard Siemens distribution channels. DriveKNMS maintains a dedicated inventory of both current-production and end-of-life ET 200SP modules sourced through certified secondary market channels.

For facilities operating legacy ET 200SP stations that cannot be upgraded due to validated process control environments (common in pharmaceutical and nuclear auxiliary systems), DriveKNMS provides like-for-like replacement modules with full traceability documentation. All sourced units are accompanied by origin records, and where applicable, firmware version verification is performed prior to dispatch to ensure compatibility with the installed IM interface module revision. Customers requiring long-term supply agreements for multi-year maintenance contracts are encouraged to contact the procurement team directly.

Quality Control for the ET 200SP Range

ET 200SP modules use a proprietary backplane bus protocol for communication between the interface module and I/O modules via the BaseUnit. DriveKNMS applies a structured test protocol to all ET 200SP units prior to shipment. Each module undergoes powered functional verification using a SIMATIC S7-1500 test rack with TIA Portal V17 or later, confirming correct module identification, channel-level I/O response, and diagnostic register integrity.

Analog modules — including the 6ES7135-6HB00-0DA1 — are tested against their full output range (voltage and current modes) using calibrated reference instruments traceable to national standards. HART communication functionality on HF-variant modules is verified using a HART communicator. Digital modules are tested for correct switching response across all channels under rated load. BaseUnit contact integrity is inspected visually and electrically. Modules that fail any test stage are quarantined and not returned to inventory.