Siemens ET 200S Modules: 6ES7 151-3BA23-0AB0 Interface Module - ETC 200S 6ES7 151-3BA23-0AB0 DNP-CPCI-3U-4 0190-16926 138-0335-03

Technical Dossier

Product Details And Specifications

Siemens ET 200S Series Technical Notes

The Siemens ET 200S (SIMATIC ET 200S) is a modular distributed I/O system within the SIMATIC S7 automation platform, designed for installation in control cabinets and terminal boxes. It has achieved widespread deployment across global heavy industry sectors including petrochemical plants, nuclear power facilities, oil refineries, steel mills, and pharmaceutical manufacturing lines. Its fine-grained modularity — down to single-channel I/O granularity — makes it the preferred distributed I/O architecture for process-critical applications where channel-level isolation and hot-swappable replacement are mandatory operational requirements. The ET 200S communicates via PROFIBUS DP and PROFINET IO, enabling integration into both legacy SIMATIC S5/S7-300/S7-400 environments and modern S7-1500/TIA Portal architectures.

The Evolution of ET 200S Architecture

The ET 200S platform was introduced in the mid-1990s as a successor to the ET 200B and ET 200U distributed I/O families. The first-generation interface modules (IM 151-1) supported PROFIBUS DP at up to 12 Mbit/s and established the modular terminal module (TM) concept that remains the mechanical foundation of the system today. The second generation introduced the IM 151-3 PN series, adding PROFINET IO support and enabling integration with S7-300/S7-400 controllers via IE/PB Link or direct PN connection. The IM 151-7 CPU variant elevated the ET 200S to a standalone controller capable of executing STEP 7 programs independently, supporting fail-safe (F) and motion control (MC) applications. The IM 151-8 PN/DP CPU further consolidated PROFIBUS and PROFINET on a single interface module. As of 2020, Siemens has formally transitioned the ET 200S into the maintenance phase, with the ET 200SP (SIMATIC ET 200SP) designated as the strategic successor. Existing ET 200S installations remain fully supported for spare parts and firmware, but new project designs are directed toward ET 200SP. Compatibility between ET 200S and ET 200SP is not direct — terminal modules, power modules, and electronic modules are not interchangeable between the two platforms.

ET 200S Full Catalog & Functionalities (SKU List)

The following SKUs represent the core module range of the Siemens ET 200S system, classified by functional category. All models listed are verified ET 200S platform components.

Interface Modules (IM)

• 6ES7 151-1AA05-0AB0: IM 151-1 Standard — PROFIBUS DP interface module, max 63 electronic modules per station.
• 6ES7 151-1BA02-0AB0: IM 151-1 High Feature — PROFIBUS DP, extended diagnostics, supports F-modules and motor starters.
• 6ES7 151-3AA23-0AB0: IM 151-3 PN Standard — PROFINET IO interface module, 100 Mbit/s, IRT capable.
• 6ES7 151-3BA23-0AB0: IM 151-3 PN High Feature — PROFINET IO, IRT, PROFIsafe, supports fail-safe and motion modules. (This listing's primary SKU.)
• 6ES7 151-7AA21-0AB0: IM 151-7 CPU — Standalone CPU with PROFIBUS DP master/slave, 48 KB work memory.
• 6ES7 151-7FA01-0AB0: IM 151-7 F-CPU — Fail-safe CPU, SIL 3 / Cat. 4 capable, PROFIBUS DP.
• 6ES7 151-8AB01-0AB0: IM 151-8 PN/DP CPU — Combined PROFINET IO and PROFIBUS DP CPU interface module.

Digital Input Modules (DI)

• 6ES7 131-4BB01-0AB0: 4 DI × 24 VDC, standard — 4-channel digital input, 24 V DC, 3-wire connection.
• 6ES7 131-4BF00-0AA0: 8 DI × 24 VDC — 8-channel digital input module for high-density applications.
• 6ES7 131-4RD02-0AB0: 4 DI × 24 VDC, relay isolated — Isolated digital input for high-noise environments.
• 6ES7 131-7BF00-0AB0: 8 F-DI × 24 VDC — Fail-safe digital input module, SIL 2/3, PROFIsafe.

Digital Output Modules (DO)

• 6ES7 132-4BB01-0AB0: 4 DO × 24 VDC / 0.5 A — 4-channel transistor output, standard.
• 6ES7 132-4BF00-0AA0: 8 DO × 24 VDC / 0.5 A — 8-channel transistor output, high density.
• 6ES7 132-4HB01-0AB0: 4 DO × 24 VDC / 2 A — High-current transistor output for actuator loads.
• 6ES7 132-7BF00-0AB0: 8 F-DO × 24 VDC — Fail-safe digital output, SIL 2/3, PROFIsafe.

Analog Input Modules (AI)

• 6ES7 134-4FB01-0AB0: 2 AI — Analog input, ±10 V / 0–20 mA / 4–20 mA, 15-bit resolution.
• 6ES7 134-4GB01-0AB0: 2 AI RTD — Resistance thermometer input, PT100/PT1000/NI100.
• 6ES7 134-4JB01-0AB0: 2 AI TC — Thermocouple input, type J/K/N/S/T/B/E/R.

Analog Output Modules (AO)

• 6ES7 135-4FB01-0AB0: 2 AO — Analog output, ±10 V / 0–20 mA / 4–20 mA, 15-bit resolution.

Power Modules (PM)

• 6ES7 138-4CA01-0AA0: PM-E 24 VDC — Power module for electronic modules, 24 V DC supply.
• 6ES7 138-4CB11-0AB0: PM-E 24–48 VDC / 24–230 VAC — Universal power module, wide voltage range.
• 6ES7 138-4HA00-0AB0: PM-D — Power module for motor starters and frequency converters.