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- Part number
- 6ES7241-1CH30-1XB0
- Model no
- CB 1241 RS 485
In stock · 50+
Dispatch
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· From Türkiye
0
SIMATIC S7-1200Siemens 6ES7241-1CH30-1XB0 SIMATIC S7-1200 CB 1241 RS485 Communication Board
SIMATIC S7-1200 CB 1241 RS485 communication board, Freeport, Modbus RTU, USS, up to 1000m.
Description
About the CB 1241 RS 485
About the CB 1241 RS 485
The Siemens 6ES7241-1CH30-1XB0 is a SIMATIC S7-1200 CB 1241 communication board that adds an RS485 port with terminal-block wiring for point-to-point serial links up to 1000m. It supports the Freeport, Modbus RTU master/slave, USS, and 3964(R) protocol drivers, drawing 50mA from the backplane bus at 1.5W power loss, and mounts onto the CPU's signal-board slot without using a side-rack position.
Certifications & Standards
- CE
- CSA
- UL
- cULus
- FM
- RCM
- KC
- Marine
Selection Notes
Built-in Modbus RTU master and device drivers let this board poll third-party serial devices or answer as a Modbus slave without an external gateway or a separate CM 1241 module on the rack side. It mounts on the CPU's signal-board slot, so it's the right choice when the application needs exactly one extra serial port and the side rack slots are needed for I/O instead — for a second independent RS485/RS232 port, add a CM 1241 communication module rather than stacking signal boards. The 1000m point-to-point run at RS485 levels covers longer field runs than the RS232 boards in the same family support.
Applications
Adds a Modbus RTU or Freeport serial link to a compact S7-1200 CPU for connecting VFDs, meters, or third-party instruments over RS485 without a rack-mounted communication module.
Specification
Full specification
General information 1
| Product type designation | CB 1241 RS 485 |
|---|
Input current 1
| from backplane bus 5 V DC, typ. | 50 mA |
|---|
Power loss 1
| Power loss, typ. | 1.5 W |
|---|
Show all 60 specifications ↓ Show less ↑57 more values in Identification, Interfaces, Protocols, Interrupts/diagnostics/status information, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Mechanics/material, Dimensions, Weights, Logistics.
Identification 10
| Part number | 6ES7241-1CH30-1XB0 |
|---|---|
| Type designation | CB 1241 RS 485 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 6940408100930 |
| ETIM class | EC001423 |
| eCl@ss | 27242208 |
Interfaces 6
| Point-to-point connection: Cable length, max. Integrated protocol driver | 1 000 m |
|---|---|
| Point-to-point connection: Freeport | Yes |
| Point-to-point connection: ASCII | Yes; Available as library function |
| Point-to-point connection: Modbus RTU master | Yes |
| Point-to-point connection: Modbus RTU device | Yes |
| Point-to-point connection: USS | Yes; Available as library function |
Protocols 7
| Integrated protocols Freeport: Telegram length, max. | 1 kbyte |
|---|---|
| Integrated protocols Freeport: Bits per character | 7 or 8 |
| Integrated protocols Freeport: Number of stop bits | 1 (Standard), 2 |
| Integrated protocols Freeport: Parity 3964 (R) | No parity (standard); even, uneven, mark (parity bit always 1); space (parity bit always 0) |
| Integrated protocols Freeport: Parity Modbus RTU master | No parity (standard); even, uneven, mark (parity bit always 1); space (parity bit always 0) |
| Integrated protocols Freeport: Address area | 1 through 49 999 (Standard Modbus addressing) |
| Integrated protocols Freeport: max. number of devices Modbus RTU device | 247; slave numbers 1 through 247, per MODBUS network segment maximum 32 devices, additional repeaters needed to expand the network to maximum configuration |
Interrupts/diagnostics/status information 1
| Diagnostics function | Yes |
|---|
Degree and class of protection 1
| IP degree of protection | IP20 |
|---|
Standards, approvals, certificates 8
| CE mark | Yes |
|---|---|
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | Yes |
Ambient conditions 13
| Free fall: Fall height, max. | 0.3 m; five times, in product package |
|---|---|
| Ambient temperature during operation: min. | -20 °C |
| Ambient temperature during operation: max. | 60 °C |
| Ambient temperature during operation: horizontal installation, min. | -20 °C |
| Ambient temperature during operation: vertical installation, min. | -20 °C |
| Ambient temperature during operation: permissible temperature change | 5°C to 55°C, 3°C / minute |
| Ambient temperature during storage/transportation: min. | -40 °C |
| Ambient temperature during storage/transportation: max. | 70 °C |
| Air pressure acc. to IEC 60068-2-13: Operation, min. | 795 hPa |
| Air pressure acc. to IEC 60068-2-13: Operation, max. | 1 080 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, min. | 660 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, max. | 1 080 hPa |
| Relative humidity: Operation at 25 ℃ without condensation, max. | 95 % |
Mechanics/material 1
| Enclosure material (front): plastic | Yes |
|---|
Dimensions 3
| Width | 38 mm |
|---|---|
| Height | 62 mm |
| Depth | 21 mm |
Weights 1
| Weight, approx. | 40 g |
|---|
Logistics 6
| Net weight | 0.031 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.531 kg |
| Ships from | Türkiye |
| Dispatch | 12 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7241-1CH30-1XB0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- CE mark
- CSA approval
- UL approval
- cULus
- FM approval
- RCM (formerly C-TICK)
- KC approval
- Marine approval
Quick answers
Questions about the CB 1241 RS 485
What is the HS code of CB 1241 RS 485 for customs?
The tariff (HS) code on file for CB 1241 RS 485 is 85176200.
What is the EAN of CB 1241 RS 485?
The EAN (GTIN) of CB 1241 RS 485 is 6940408100930.
Where does CB 1241 RS 485 ship from, and how fast?
CB 1241 RS 485 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
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Customer reviews
Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
