Brand:Siemens Item No.:6AG1241-1CH30-5XB1 Product Origin:Germany Product Dimensions:38 × 62 × 21 mm Product Weight:0.033 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Siemens 6AG1241-1CH30-5XB1 Communication Module is part of the SIPLUS S7-1200 communication portfolio and is specifically designed for RS-485 serial communication.
As an industrial communication board, it provides a compact way to connect an S7-1200 controller to equipment that does not use PROFINET or Industrial Ethernet as its primary communication interface. This is particularly valuable in machine automation and retrofit applications where existing field devices already use RS-485.
The module is based on the 6ES7241-1CH30-1XB0 and incorporates conformal coating. The coating helps protect the electronic assembly against environmental influences that may be encountered in industrial applications. Siemens specifies operation from -40°C to +60°C, with startup possible at temperatures down to -25°C.
From a communication perspective, the 6AG1241-1CH30-5XB1 supports several common serial communication methods. Modbus RTU enables integration with widely used industrial instruments and automation equipment, while Freeport and ASCII communication provide additional flexibility for proprietary or application-specific serial protocols. USS support is useful when communicating with compatible drive systems.
Another important feature is its compact construction. Measuring just 38 mm wide, 62 mm high and 21 mm deep, the board is well suited to applications where the control cabinet has limited available space.
For engineers working with S7-1200 systems, the module can therefore provide a practical bridge between modern PLC control and legacy or specialized RS-485 field equipment.
Technical Specifications
Specification
Details
Product Model
Siemens 6AG1241-1CH30-5XB1
Product Type
SIPLUS S7-1200 CB 1241 RS-485 Communication Board
Based On
6ES7241-1CH30-1XB0
Communication Interface
1 × RS-485
Communication Type
Serial
Connection
Terminal block
Freeport
Yes
ASCII
Yes
Modbus RTU Master
Yes
Modbus RTU Device
Yes
USS
Yes, library-based
Typical Backplane Current
50 mA from 5 V DC
Typical Power Loss
1.5 W
Conformal Coating
Yes
Operating Temperature
-40°C to +60°C
Startup Temperature
Down to -25°C
Maximum Communication Distance
Up to approximately 1,000 m
Width
38 mm
Height
62 mm
Depth
21 mm
Dimensions
38 × 62 × 21 mm
Weight
0.033 kg
Weight in Pounds
0.07 lb
PLC Platform
Siemens S7-1200
Application
Industrial serial communication
Recommended Related Models
Model
Product Type
Main Function
Siemens 6ES7241-1CH30-1XB0
CB 1241 RS-485 Communication Board
Standard S7-1200 RS-485 communication
Siemens 6AG1241-1AH32-2XB0
SIPLUS CM 1241 RS-232
RS-232 serial communication
Siemens 6AG1241-1AH32-4XB0
SIPLUS CM 1241 RS-232
Enhanced-environment RS-232 communication
Siemens 6AG1241-1CH32-2XB0
SIPLUS CM 1241 RS-485
RS-485 serial communication
Siemens 6AG1241-1CH32-4XB0
SIPLUS CM 1241 RS-485
Enhanced-environment RS-485 communication
Siemens 6AG1278-4BD32-4XB0
SIPLUS S7-1200 Communication Module
Serial communication applications
Popular Related Models
For S7-1200 communication projects, the following models are commonly considered alongside the 6AG1241-1CH30-5XB1:
Siemens 6ES7241-1CH30-1XB0 – Standard CB 1241 RS-485 communication board
Siemens 6AG1241-1CH32-2XB0 – SIPLUS CM 1241 RS-485 communication module
Siemens 6AG1241-1CH32-4XB0 – SIPLUS RS-485 communication module for demanding environmental conditions
Siemens 6AG1241-1AH32-2XB0 – SIPLUS CM 1241 RS-232 communication module
Siemens 6AG1241-1AH32-4XB0 – SIPLUS CM 1241 RS-232 communication module with enhanced environmental protection
Siemens 6AG1278-4BD32-4XB0 – SIPLUS S7-1200 communication solution for serial applications
Applications
The Siemens 6AG1241-1CH30-5XB1 is a SIPLUS S7-1200 CB 1241 RS-485 communication board designed to add serial RS-485 communication capability to Siemens S7-1200 PLC systems. It is based on the standard 6ES7241-1CH30-1XB0 communication board and features conformal coating for improved resistance to demanding industrial environmental conditions.
With one RS-485 interface and support for Freeport, ASCII, Modbus RTU, and USS communication, the module is suitable for connecting S7-1200 controllers with drives, meters, sensors, third-party controllers, and other serial automation equipment.
Industrial installations exposed to dust, humidity, salt spray, or chemically active environments
The RS-485 interface can support communication over cable distances of up to approximately 1,000 m under suitable network conditions, making it useful for distributed equipment where Ethernet is not required.
Advantages
1. SIPLUS Environmental Protection
The 6AG1241-1CH30-5XB1 incorporates conformal coating designed for improved reliability in harsh industrial environments. Its specified operating temperature range is -40°C to +60°C, with startup capability down to -25°C.
2. Direct S7-1200 Integration
The communication board is designed specifically for the S7-1200 controller platform and can be installed directly on a compatible CPU. This avoids the need for a separate external communication gateway for many serial applications.
3. RS-485 Interface
The integrated RS-485 interface provides a practical solution for connecting industrial devices using serial communication technology. It is particularly useful when existing field devices communicate through RS-485.
4. Flexible Protocol Support
The module supports several communication approaches, including Freeport, ASCII, Modbus RTU and USS. This allows engineers to integrate both Siemens and third-party devices into the same control architecture.
5. Modbus RTU Capability
Modbus RTU master and device functionality makes the module suitable for connecting PLC systems with compatible meters, drives, instruments and controllers.
6. Compact Design
With dimensions of only 38 × 62 × 21 mm, the communication board occupies very little space inside a control system.
7. Low Weight
The module weighs only 0.033 kg (0.07 lb), making it suitable for compact S7-1200 installations where cabinet space and equipment weight are important considerations.
Technical FAQs
1. What is the Siemens 6AG1241-1CH30-5XB1?
The Siemens 6AG1241-1CH30-5XB1 is a SIPLUS S7-1200 CB 1241 RS-485 communication board. It adds an RS-485 serial communication interface to compatible S7-1200 PLC applications.
2. What type of communication interface does the 6AG1241-1CH30-5XB1 provide?
It provides one RS-485 interface for serial industrial communication.
3. Which protocols are supported?
The communication board supports Freeport, ASCII, Modbus RTU master, Modbus RTU device and USS functionality. Additional communication functions can be implemented depending on the Siemens software and libraries used by the application.
4. Can the 6AG1241-1CH30-5XB1 communicate with Modbus RTU devices?
Yes. The board supports Modbus RTU master and device operation, allowing an S7-1200 system to exchange data with compatible Modbus equipment.
5. Is the 6AG1241-1CH30-5XB1 suitable for USS drive communication?
Yes. USS communication is supported as a library-based function and can be used for communication with compatible Siemens drives and other equipment using the USS protocol.
6. What is the maximum RS-485 communication distance?
Under appropriate RS-485 network conditions, the communication distance can reach up to approximately 1,000 m. Actual distance depends on cable characteristics, baud rate, termination, grounding and electromagnetic conditions.
7. What temperature range can the module operate in?
The specified operating temperature range is -40°C to +60°C, with a startup temperature capability down to -25°C.
8. What is the difference between the 6AG1241-1CH30-5XB1 and a standard CB 1241 RS-485 board?
The 6AG1241-1CH30-5XB1 is a SIPLUS version based on the corresponding standard S7-1200 communication board. It incorporates conformal coating and enhanced environmental specifications, making it more suitable for demanding industrial installations.
9. How is the 6AG1241-1CH30-5XB1 connected to the S7-1200 system?
It is designed as a communication board that can be installed directly with a compatible S7-1200 CPU. The field-side RS-485 connection uses a terminal-block connection.
10. Can the module be used for third-party equipment?
Yes. Its RS-485 interface and Freeport, ASCII and Modbus RTU capabilities make it suitable for communication with compatible third-party meters, instruments, controllers, drives and other serial devices.
