What is the product 6ES7241-1CH30-1XB0?

It is an industrial-grade serial communication board belonging to the Siemens S7-1200 PLC system used to achieve RS485 point-to-point serial data exchange.

How to correctly install and use the 6ES7241-1CH30-1XB0 communication board in an industrial field?

Snap it directly into the integrated expansion slot located on the front center of the S7-1200 CPU under power-off conditions without occupying extra side module space.

What is the interface type on the physical hardware of 6ES7241-1CH30-1XB0?

This module does not use a standard DB9 plug but instead provides a practical 5-pin removable terminal block as its physical wiring interface.

What are the core industrial application scenarios for 6ES7241-1CH30-1XB0?

It is primarily applied at the field control level to achieve short-distance serial networking between the PLC and variable frequency drives, temperature controllers, and other third-party smart instruments.

Which common serial communication protocols are supported by 6ES7241-1CH30-1XB0 at the software level?

This expansion hardware supports Freeport protocol, Modbus RTU master or slave configurations, and the USS drive control protocol through backplane instructions.

6ES7241-1CH30-1XB0

Name: 6ES7241-1CH30-1XB0
Brand: Siemens
SKU: 6ES7241-1CH30-1XB0

Communication Board

Product image is representative; revision or series may vary. Contact us to request a specific version.

Product Describe：

SIMATIC S7-1200
Communication Board CB 1241
RS485, terminal block
supports Freeport

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Technical specifications for 6ES7241-1CH30-1XB0

Manufacturer:

Siemens
Product Category:

PLC Systems
Spare Part Number:

6ES7241-1CH30-1XB0
Estimated shipping dimensions:

10x7.5x4cm
Weight:

0.12 kg
Tariff Code:

8537101190
Counliy of origin:

GERMANY
Input current:

50 mA
Power loss:

1.5 W
Transmission Rate:

Max. 115.2 kbit/s
Maximum Cable Length:

Max. 1,000 m (shielded twisted pair)
Connection Type:

Point-to-point connection
Operating Temperature:

-20 °C to +60 °C
Relative Humidity:

95% condensing or non-condensing, compliant with IEC 60068-2-30
Degree of Protection:

IP20 (Compliant with IEC 60529)
Input Voltage:

5 V DC
Current Consumption:

Max. 50 mA (from backplane)
Supply Voltage Source:

Derived directly from the S7-1200 CPU backplane
Industrial Safety:

CE mark, cULus, FM, RCM (formerly C-Tick), KC (Korea), Marine approvals

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Information

Overview Manuals Common Applications Product Precautions

The 6ES7241-1CH30-1XB0 mounts directly onto the PLC front for efficient RS485 serial communication over distances up to 1000 meters. It operates with a low 5V DC power consumption of 1.5W, supports horizontal or vertical mounting within an IP20-rated enclosure, and functions in industrial temperatures from -20°C to 60°C.

Zero-Space Cost-Saving Form Factor
Comprehensive Protocol Coverage
Cost-Effective Point-to-Point Solution

This compact communication board inserts directly into the dedicated signal board slot on the front of any SIMATIC S7-1200 CPU, ensuring zero additional space is consumed on the DIN rail. For physical field wiring, it features a removable terminal block that provides straightforward point-to-point connections, accommodating cable cross-sections from 0.14 to 0.5 square millimeters. The module relies on differential signaling over a shielded twisted-pair cable to successfully mitigate industrial electrical noise and common-mode voltage fluctuations across the network. It handles adjustable data transmission baud rates ranging from 300 to 115,200 bits per second, utilizing 7 or 8 data bits, odd, even, or no parity bit selection, and 1 or 2 stop bits to adapt to diverse field device configurations.

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.

Siemens 6ES7241-1CH30-1XB0 Communication Board Manuals, Datasheets, Drivers, Link

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.

HVAC & Smart Buildings

Connects and controls multiple chillers, temperature/humidity sensors, and damper actuators via Modbus RTU for centralized climate monitoring and constant temperature control.

Water & Wastewater Treatment

Reads serial data from field-distributed ultrasonic level meters, electromagnetic flowmeters, and water quality analyzers (pH, turbidity) while dispatching speed commands to chemical dosing pump drives.

Automotive Manufacturing

Connects to digital torque-wrenches at assembly stations, automatically acquiring final fastening torque metrics for trace-and-track quality databases.

Solar Power & Renewable Energy

Installed inside PV combiner boxes or inverter enclosures to poll active power output, DC voltage, and fault diagnostic records from multiple solar inverters via RS485.

Cement & Building Materials

Links to belt weigh-feeders and high-temperature flue gas analyzers to capture real-time raw material weights and adjust classifier motor speeds.

When using the 6ES7241-1CH30-1XB0, the board must be inserted or removed only when the CPU power is completely off to prevent hardware damage. Note that its RS485 interface lacks electrical isolation, making an external isolator mandatory for long-distance runs or environments with potential differences. Field wiring requires shielded twisted-pair cables with 120-ohm terminating resistors configured at both ends of the bus to suppress signal reflections, while serial parameters such as baud rate and parity bits in TIA Portal must precisely match the slave devices.

Alternative Names

6ES7241 1CH30 1XB0 6ES724I-1CH30-1XB0 6ES7241-ICH30-1XB0 6ES7241-1CH30-IXB0 6ES724I-ICH30-IXB0 6ES7241-1CH3O-1XBO 6ES724I-ICH3O-IXBO 6ES724I-1CH30-1XBO

Technical notes

The Siemens 6ES7241-1CH30-1XB0 operates as a compact CB 1241 RS485 point-to-point communication board within the SIMATIC S7-1200 controller family. This specific component features an embedded form factor that snaps directly into the dedicated signal board slot on the front of any S7-1200 CPU, ensuring that industrial serial capabilities are expanded without widening the control panel layout or taking up left-side system rail space. For physical layer connections, it provides a removable 5-pin terminal block supporting half-duplex asynchronous data transmission across adaptive baud rates ranging from 300 bps to 115.2 Kbps. On the software side through TIA Portal, it acts as a versatile serial interface handling Freeport, Modbus RTU master or slave protocols, and the USS drive interface protocol to bridge communications with motor drives and field process meters over distances reaching up to 1000 meters. The board operates under a minimal energy footprint by drawing only 50 mA of current from the 5 Vdc backplane line, resulting in a typical power loss of 1.5 W while maintaining strict operational resilience under standard plant temperatures.

FAQ View All FAQ

What is the product 6ES7241-1CH30-1XB0?

It is an industrial-grade serial communication board belonging to the Siemens S7-1200 PLC system used to achieve RS485 point-to-point serial data exchange.
How to correctly install and use the 6ES7241-1CH30-1XB0 communication board in an industrial field?

Snap it directly into the integrated expansion slot located on the front center of the S7-1200 CPU under power-off conditions without occupying extra side module space.
What is the interface type on the physical hardware of 6ES7241-1CH30-1XB0?

This module does not use a standard DB9 plug but instead provides a practical 5-pin removable terminal block as its physical wiring interface.

What are the core industrial application scenarios for 6ES7241-1CH30-1XB0?

It is primarily applied at the field control level to achieve short-distance serial networking between the PLC and variable frequency drives, temperature controllers, and other third-party smart instruments.
Which common serial communication protocols are supported by 6ES7241-1CH30-1XB0 at the software level?

This expansion hardware supports Freeport protocol, Modbus RTU master or slave configurations, and the USS drive control protocol through backplane instructions.

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