Product Overview

The SIMATIC S7-1200 Communication Module CM 1241 expands controller communication capabilities with RS422/485 serial interface and 9-pole D-sub socket connector. Supports Freeport protocol for flexible industrial device integration and data exchange applications.

Key Features

• RS422/485 Communication: Dual protocol support for point-to-point and multi-drop networks
• Freeport Protocol: Message-based communication with user-defined formats
• 9-Pole D-Sub Socket: Female connector for secure industrial connections
• S7-1200 Integration: Direct installation in communication module slot
• TIA Portal Configuration: Easy setup through STEP 7 Basic programming
• Industrial Grade: Robust design for demanding environments

Technical Specifications

• Interface: RS422/485 with 9-pole D-sub socket (female)
• Dimensions: 30 × 100 × 75 mm (W × H × D)
• Weight: 0.150 kg
• Power Supply: +5V DC from CPU
• Common Mode Voltage: -7V to +12V (1 second), 3V RMS continuous
• Input Impedance: 5.4kΩ minimum including termination
• Signal Levels: 2V min (RS422), 1.5V min (RS485)
• Network Capacity: Up to 32 nodes (RS485 multi-drop)

Applications & Configuration

Primary Applications:

• Industrial device integration (sensors, drives, instruments)
• SCADA system communication and data collection
• Process control and monitoring equipment
• Legacy system integration and remote monitoring

Configuration Options:

• User-configurable baud rates, data bits, parity, and stop bits
• Internal or external biasing with 120Ω termination
• Interrupt-driven and polling communication modes
• Hardware and software flow control

System Compatibility

• CPUs: All SIMATIC S7-1200 series (1211C, 1212C, 1214C, 1215C, 1217C)
• Programming: TIA Portal with STEP 7 Basic
• Installation: Communication module slot with front-accessible connector
• Cabling: Shielded twisted pair recommended for optimal performance

Quality & Compliance

• Status: Active Product (PM300)
• Origin: China | EAN: 6940408102101 | UPC: 887621424480
• RoHS Compliant: Since 30.08.2013 | WEEE: Take-back obligation applies
• REACH: Contains lead, lead oxide, and BPA above 0.1% w/w (safe when used as intended)

Package Contents

• 1 × CM 1241 Communication Module
• Technical documentation and installation guide

Download existing graphical data for this product:

• Technical Datasheet
• Product Information Page
• CM 1241 Product Family
• Technical Documentation
• TIA Portal Documentation