Technical Summary
| Product type designation | CB 1241 RS 485 |
|---|---|
| Based on | 6ES7241-1CH30-1XB0 |
| Backplane bus input current, typ. | 50 mA |
| Power loss, typ. | 1.5 W |
| Freeport bits per character | 7 or 8 |
| Modbus RTU master max. number of devices | 247; slave numbers 1 through 247, per MODBUS network segment maximum 32 devices, additional repeaters needed to expand the network to maximum configuration |
| IP degree of protection | IP20 |
| Ambient temperature during operation, horizontal installation, max. | 60 °C; = Tmax; +70 °C for 10 min (OT1, ST1/ST2 acc. to EN 50155) |
Applications
Connect as a Modbus RTU master or Modbus RTU device.
Use the RS-485 point-to-point connection with cable length up to 1 000 m.
Key Features
CB 1241 RS 485 based on 6ES7241-1CH30-1XB0.
RS-485 with Freeport, ASCII, Modbus RTU master, Modbus RTU device and USS support.
Conformal coating for high reliability, with protection against fouling and PC2 protective coating for rolling stock.
-25…+55 °C, OT1 with ST1/2 (+70 °C for 10 minutes), horizontal mounting position and IP20.
Terminal block, diagnostics function Yes, and point-to-point connection cable length up to 1 000 m.
Frequently Asked Questions
What is Siemens 6AG2241-1CH30-1XB0?
It is a SIPLUS S7-1200 CB 1241 RS 485 rail module based on 6ES7241-1CH30-1XB0.
Which communication functions does 6AG2241-1CH30-1XB0 support?
It supports Freeport, ASCII, Modbus RTU master, Modbus RTU device and USS.
What is the maximum cable length for the point-to-point connection?
The maximum cable length is 1 000 m.
What protection and environmental data are supplied for this module?
It has IP20 protection, conformal coating, and an operating range of -25…+55 °C, with OT1/ST1/2 support up to +70 °C for 10 minutes.
