Product Overview

The SIMATIC ET 200SP CM PtP (Point-to-Point) communication module, MLFB 6ES7137-6AA01-0BA0, facilitates serial communication via RS-422, RS-485, and RS-232 protocols. It’s engineered for robust integration into SIMATIC ET 200SP systems, supporting multiple industry-standard protocols such as freeport, 3964(R), USS, and Modbus RTU (master and slave), with a maximum data rate of 250 kbit/s. Compatible with BU type A0 base units.
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Technical Specifications
Feature Details
Supply Voltage (DC) 24 V (19.2 – 28.8 V allowed); reverse polarity protection included
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Power Consumption Idle: 31 mA; Maximum: 35 mA; Power Loss: ~0.7 W
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Interface Types RS-232 (115.2 kbit/s, up to 15 m cable); RS-422 & RS-485 (max 250 kbit/s, up to 1,200 m cable).
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Supported Protocols Freeport and 3964(R) (tel. length ≤ 2 kB); Modbus RTU (master/slave), and USS.
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Buffering 4 kB telegram buffer, supports up to 255 telegrams
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Diagnostics & LEDs I&M data (I&M0–I&M3), power (PWR), diagnostic (DIAG), RxD, and TxD LEDs
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Isolation Backplane-to-interface isolation tested to 707 V DC
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Configuration Tools Configurable via TIA Portal (v17+); STEP 7 (v5.6 HF4) and relevant GSD/GSDML files supported
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Mechanical Dimensions Width: 15 mm; Height: 73 mm; Depth: 58 mm; Weight: ~30 g
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Operating Conditions Temperature: –30 °C to 60 °C (horizontal); up to 5,000 m altitude
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Lifecycle & Logistics

Product Status: Active item (PLM: PM300)
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Lead Time: Ships ex-works in 1 day
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Packaging: 6.80 × 7.80 × 2.40 cm; Net Weight: ~40 g
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Manufacturing Origin: Germany
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Compliance & Classification

RoHS: Compliant since 30 April 2021
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WEEE: Take-back obligation applicable
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REACH Article 33: Contains lead, lead monoxide, and lead salt (>0.1 % w/w); disclosures provided according to regulations
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Classification Codes:

eClass: 27-24-26-08

ETIM: EC001604

UNSPSC: 32-15-17-05
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Technical Engineer’s Insights

Versatile Legacy Interface Support
Ideal for integrating serial-based equipment into modern ET 200SP architectures—bridging legacy systems with contemporary automation platforms.

High-Performance & Long Cable Runs
Supports high-speed data transfer and extended cable lengths (up to 1.2 km for RS-422/485), suitable for distributed automation layouts.

Robust Diagnostics & Configurability
Offers detailed I&M data, LED-based diagnostics, and seamless configuration through TIA Portal—ensuring system transparency and fast commissioning.

Compact & Efficient Footprint
Slim module design (only 15 mm wide) with minimal power consumption makes it ideal for dense module racks where space and energy efficiency are critical.

High Isolation & Reliability
Extensive electrical isolation and a wide operational temperature range ensure dependable performance even in challenging environments.

Suggested Product Page Description

SIMATIC ET 200SP CM PtP Communication Module (6ES7137-6AA01-0BA0)

Expand your ET 200SP system with a versatile serial interface module supporting RS-232, RS-422, and RS-485 protocols. Ideal for connecting legacy devices or serial-based equipment, this compact module supports Freeport, 3964(R), USS, and Modbus RTU (master/slave), with up to 250 kbit/s data rate and generous buffering (4 kB, 255 telegrams). Featuring LED diagnostics, I&M data, TIA Portal support, and robust electrical isolation, it fits seamlessly into professional automation environments.

Key Advantages

Multi-protocol serial support—integrate legacy and modern systems effortlessly

Long transmission distances for flexible setup (up to 1,200 m)

Slim, efficient design with low power draw (~0.7 W)

Rapid deployment—ships in 1 day, German-made reliability

Regulatory compliance: RoHS, WEEE, REACH (Lead-related materials disclosed)

Product Details

Dimensions: 15 mm × 73 mm × 58 mm; Weight: ~30–40 g

Install Compatibility: ET 200SP BU A0; operates up to 5,000 m altitude

Certifications: eClass 27-24-26-08, ETIM EC001604, UNSPSC 32-15-17-05