Product Overview

The IM 151-3 PN ST (MLFB: 6ES7 151-3AA23-0AB0) is a Profinet I/O interface module that links the ET 200S distributed I/O system to PROFINET IO networks. Supporting full-duplex 100 Mbps transfer, it enables reliable communication and system control. Designed as a service-friendly spare part (PLM status: PM410, product cancelled effective 1 Oct 2021), it’s ideal for maintaining existing ET 200S installations.
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Vogi International Trading Co., Ltd.

Technical Specifications

Communication & I/O Capacity

Supports up to 100 Mbps Full Duplex (100BASE-TX) with two integrated RJ45 ports, including termination module
Vogi International Trading Co., Ltd.
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Accommodates up to 63 connected modules (power, electronic, or motor-starter types), across a maximum station width of 2 meters
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Physical Dimensions & Weight

Width: 60 mm

Height: 119.5 mm

Depth: 75 mm

Weight: approximately 150 g
Vogi International Trading Co., Ltd.
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Supply & Power Details

Nominal supply: 24 V DC

Includes mains buffering (hold-up) of min. 20 ms for supply interruptions
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Maximum current draw: ~200 mA; typical power dissipation: ~3.3 W
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PROFINET Features & Diagnostics

Supports PROFINET IO protocols, including autocrossing and autonegotiation
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Built-in diagnostics with SF (system fault), BF (bus fault), ON, maintenance, and LINK LEDs along with SNMP support (MIB-2) for network diagnostics
Siemens Support
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Memory & Firmware Management

Compatible with SIMATIC Micro Memory Cards (MMC):

64 KB sufficient to store device name

4 MB or higher required for firmware updates

Allows firmware updates via MMC or PROFINET IO
Siemens Support
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Standards & Environmental Ratings

Holds CE and UL approvals
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Isolation rating: Between circuits up to 75 V DC / 60 V AC, tested to 500 V
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Operating temperature: 0 °C to 60 °C
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Lifecycle & Logistics

Product Status: Classified as a spare part; product effectively cancelled since 1 October 2021. Maintenance and replacement support are available via Siemens service channels
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Logistics:

Ships typically ex-works within 1 day

Net weight: 0.201 kg

Packaging Dimensions: 8.5 × 12.8 × 7.0 cm

Country of Origin: Germany

Compliance: RoHS since 25 Nov 2009; WEEE take-back applies; REACH Article 33 disclosure available
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Technical Engineer Insights

High-Density PROFINET Integration
With full 100 Mbps support and dual RJ45 ports, the module efficiently bridges ET 200S I/O to high-speed PROFINET networks, accommodating numerous modules over a compact footprint.

Seamless Maintenance via MMC
Firmware and device configuration can be effortlessly updated or restored using MMC cards—ideal for rapid turnaround in the field.

Extensive Diagnostic Coverage
Robust LED diagnostics complemented by SNMP support ensure easy monitoring and fast fault detection, improving uptime and troubleshooting response.

Extended Legacy Support
Though cancelled, this module remains a dependable spare part for existing ET 200S architectures, requiring no reconfiguration when replacing predecessors
Siemens Support
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Suggested Product Page Description

SIMATIC DP Interface Module IM 151-3 PN ST (6ES7 151-3AA23-0AB0)
This interface module delivers PROFINET IO integration for ET 200S distributed I/O systems with full-duplex 100 Mbps communication via two RJ45 ports (with termination). Supporting up to 63 modules over 2 m station width, it offers stellar diagnostics via LEDs and SNMP, and enables firmware and configuration updates via MMC or PROFINET. As a high-reliability service spare, it maintains continuity in legacy installations without requiring reconfiguration.

Key Highlights

PROFINET IO, 100 Mbps, dual RJ45 ports

Supports 63 modules, 2 m rack width

MMC-based updates, 20 ms bus hold-up

LED diagnostics + SNMP

Compact (60 × 119.5 × 75 mm), 150 g, German-made

Active service spare, quick delivery, RoHS/WEEE/REACH compliant