SIMATIC S7-1200 Communication Board CB 1241 (6ES7241-1CH30-1XB0)

The SIMATIC S7-1200 CB 1241 is a compact and efficient communication board designed for automation applications.

Key Specifications:

• Rated Voltage: 24V DC

• Rated Current: 50 mA

• Power Loss: 1.5 W

• Dimensions (L × W × H): 38 × 62 × 21 mm

• Weight: 40 g

• Operating Temperature: -20°C to +60°C

• Humidity Tolerance: Up to 95%

• Frequency: 50/60 Hz

• Mounting: DIN rail

• Protection Level: IP20

• Color: Black

Features:

• Compact and lightweight for easy installation

• Reliable operation in challenging industrial environments

• Energy-efficient design with minimal power loss

• Durable construction with IP20 protection

• Sleek black finish for professional aesthetics

This communication board delivers efficient, reliable, and precise performance for industrial automation systems.

SIMATIC S7-1200 CB 1241

Product Code: 6ES7241-1CH30-1XB0
Type: Communication Board, RS485, Terminal Block
Supports: Freeport

General Information

• Product Type: CB 1241 RS 485

• Backplane Bus Current: Typ. 50 mA

• Power Loss: Typ. 1.5 W

Interfaces

• Point-to-Point Connection

  • Max Cable Length: 1,000 m

• Integrated Protocol Drivers:

  • Freeport

  • ASCII (Library Function)

  • Modbus RTU Master

  • Modbus RTU Device

  • USS (Library Function)

Protocols

• Freeport:

  • Max Telegram Length: 1 kByte

  • Bits per Character: 7 or 8

  • Stop Bits: 1 (Standard), 2

  • Parity: None (Standard), Even, Odd, Mark, Space

• 3964(R):

  • Max Telegram Length: 1 kByte

  • Bits per Character: 7 or 8

  • Stop Bits: 1 (Standard), 2

  • Parity: None (Standard), Even, Odd, Mark, Space

• Modbus RTU Master/Device:

  • Address Area: 1–49,999

  • Max Devices per नेटवर्क Segment: 32 (repeaters needed for more)

Diagnostics & Status

• Diagnostics Function: Yes

Protection

• IP Rating: IP20

Standards & Approvals

• CE Mark, CSA, UL, cULus, FM, RCM, KC

• Marine Approvals

Ambient Conditions

• Operation Temperature: -20 to 60 °C (Horizontal), -20 to 50 °C (Vertical)

• Storage Temperature: -40 to 70 °C

• Relative Humidity: Max 95 % (non-condensing)

• Air Pressure: 795–1,080 hPa (Operation), 660–1,080 hPa (Storage)

• Max Fall Height: 0.3 m (5x in product package)

• Permissible Temperature Change: 5–55 °C, 3 °C/min

Mechanics / Material

• Front Material: Plastic

• Dimensions (W × H × D): 38 × 62 × 21 mm

• Weight: 40 g 

Technical Details 

FAQs of SIMATIC S7-1200, Communication Board CB 1241, 6ES7241 1CH30 1XB0: