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Siemens 6ES7241-1CH32-0XB0 SIMATIC S7-1200 Communication Module
The Siemens 6ES7241-1CH32-0XB0 is a SIMATIC S7-1200 Communication Module CM 1241, a rail-mounted expansion module that adds an RS422/485 serial port to an S7-1200 CPU. Unlike the CB 1241 board, this module mounts to the left side of the CPU on the DIN rail rather than plugging onto the CPU itself, making it suited for setups needing a dedicated 9-pin D-sub connector. It supports several serial protocols, including Freeport, ASCII, and Modbus RTU, making it a flexible choice for connecting drives, sensors, and other serial devices.
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Categories: PLC Communication Modules
Description
The Siemens SIMATIC S7-1200 Communication Module CM 1241 provides an RS422/485 interface through a 9-pin D-sub (socket) connector, supporting point-to-point serial communication over cable runs of up to 1,000 meters. It draws power directly from the CPU’s backplane bus and consumes a maximum of 220 mA, keeping power requirements low even in larger panel setups. The module supports several integrated protocol drivers, including Freeport for custom message-based communication, ASCII, Modbus RTU as both master and slave, and USS for communicating with variable frequency drives.
This module includes built-in diagnostic functions along with an LED indicator for output status, making it easier to troubleshoot communication issues directly at the panel. It’s rated for a wide operating temperature range and carries a full set of international approvals, making it suitable for both standard industrial panels and more demanding environments.
QTech Safety is a leading supplier of Siemens 6ES7241-1CH32-0XB0 SIMATIC S7-1200 Communication Module in Ireland, offering competitive prices and fast worldwide shipping across United Kingdom (UK), Germany, France, Italy, Spain, United States USA, Canada, Mexico, and Western Australia (Perth). Buy Siemens PLC Communication Modules from one of Ireland’s most trusted industrial safety equipment suppliers.
Features of Siemens 6ES7241-1CH32-0XB0 SIMATIC S7-1200 Communication Module
- Rail-mounted communication module for S7-1200 CPUs
- RS422/485 interface with 9-pin D-sub (socket) connector
- Supports point-to-point cable runs up to 1,000 meters
- Integrated Freeport protocol driver for custom message-based communication
- Integrated ASCII protocol support (via library function)
- Integrated Modbus RTU master and slave support
- Integrated USS protocol support for variable frequency drives (via library function)
- Built-in diagnostic function with LED status indicator
- Low power draw, max 220 mA from backplane bus
- Suitable for multi-drop RS485 networks
- Wide operating temperature range for flexible installation
- Full range of international approvals for global use
Technical Specifications of Siemens 6ES7241-1CH32-0XB0
- Product type: CM 1241 RS 422/485
- Interface type: RS422/485 (X.27), 9-pole D-sub (socket)
- Number of interfaces: 1
- Supply voltage: 24V DC (range 20.4V to 28.8V)
- Current consumption: 220 mA max, from backplane bus (5V DC)
- Power loss: 1.1 W typical
- Max cable length: 1,000 m (point-to-point connection)
- Freeport protocol: Supported, max telegram length 1 KB
- ASCII protocol: Supported, via library function
- Modbus RTU master: Supported, up to 247 slave devices (max 32 per segment)
- Modbus RTU slave: Supported
- USS protocol: Supported, via library function
- 3964(R) protocol: Supported, max telegram length 1 KB
- Bits per character: 7 or 8
- Stop bits: 1 (standard) or 2
- Parity options: None, even, odd, mark, or space
- Diagnostics function: Yes, with LED status indication for outputs
- Degree of protection: IP20
- Approvals: CE, CSA, UL, cULus, FM, RCM, KC, Marine approval
- Operating temperature: -20°C to 60°C (horizontal), -20°C to 50°C (vertical)
- Storage temperature: -40°C to 70°C
- Humidity: Up to 95% at 25°C, non-condensing
- Dimensions (W x H x D): 30 x 100 x 75 mm
- Weight: 155 g approx.
Applications
The Siemens 6ES7241-1CH32-0XB0 SIMATIC S7-1200 Communication Module is commonly used in:
- Connecting variable frequency drives via USS protocol
- Long-distance serial communication runs
- Multi-drop RS485 device networks
- Modbus RTU-based sensor and device networks
- Industrial serial protocol integration
- Panel designs requiring a dedicated D-sub serial connector
Why Choose QTech Safety?
At QTech Safety, we’re more than just a safety supplier we’re your trusted partner in workplace protection and compliance.
Here’s why companies across UK and Ireland (EU) choose us for safety products and training:
- Comprehensive Range of Safety Equipment:
From gas detection and PPE to industrial safety tools, we offer one of the widest selections of trusted brands all at competitive Irish market prices. - Test & Measurement Instruments You Can Trust:
We supply a wide range of test and measurement instruments from the most leading and trusted brands, including industrial sensors, multimeters, oscilloscopes, accelerometers, proximity sensors, and other advanced measurement tools to support accurate diagnostics, condition monitoring, calibration, and maintenance applications. - Expert Health & Safety Training:
We provide professional health and safety training programmes designed to help your workforce stay compliant and confident on the job. - Fast, Reliable Delivery Worldwide:
Whether you’re in Texas United States or Perth Western Australia, our fast delivery service ensures you get your safety equipment quickly and efficiently. - Trusted by European Businesses:
We’re proud to support industries across Europe (UK) with certified safety solutions, expert advice, and responsive customer service.
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At QTech Safety, we supply industrial sensors and instrumentation across Ireland, offering fast and reliable worldwide delivery. Through strong global logistics partnerships, we ensure efficient shipping and professional support for customers in Europe, North America, and Australia.
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