Key Features
- CM 1241 RS 422 / 485: Product type designation: CM 1241 RS 422 / 485.
- RS 422 / 485 interface: Interfaces/bus type: RS 422 / 485 (X.27); number of interfaces: 1.
- Integrated protocol driver support: Freeport: Yes; ASCII: Yes; Modbus RTU master: Yes; Modbus RTU device: Yes; USS: Yes.
- 24 V DC supply: Rated value (DC): 24 V; permissible range: 20.4 V to 28.8 V.
- Physical configuration: Width: 30 mm; height: 100 mm; depth: 75 mm.
- Conformal coating: Conformal coating for high reliability; class 2 for high reliability; type 1 protection against fouling.
Technical Summary
| Product type designation | CM 1241 RS 422 / 485 |
|---|---|
| Based on | 6ES7241-1CH32-0XB0 |
| Rated voltage (DC) | 24 V |
| Permissible supply voltage, lower limit (DC) | 20.4 V |
| Permissible supply voltage, upper limit (DC) | 28.8 V |
| Current consumption, max. | 220 mA; From backplane bus 5 V DC |
| Power loss, typ. | 1.1 W |
| Interfaces/bus type | RS 422 / 485 (X.27) |
| Number of interfaces | 1 |
| IP degree of protection | IP20 |
Applications
- Modbus RTU communication: Communication over RS 422 / 485 using Modbus RTU master or Modbus RTU device functions.
- Freeport serial communication: Freeport communication with telegram lengths up to 1 kbyte over the RS 422 / 485 interface.
- ASCII and USS serial communication: Serial communication tasks using the integrated ASCII and USS protocol drivers.
Frequently Asked Questions
What is the exact Siemens model of this communication module?
6AG1241-1CH32-4XB0, Siemens SIPLUS S7-1200 CM 1241 based on 6ES7241-1CH32-0XB0.
Which interface does this CM 1241 module use?
It uses RS 422 / 485 (X.27) and has 1 interface.
What supply voltage does the module require?
Rated value (DC): 24 V. Permissible range: 20.4 V to 28.8 V.
Which protocol drivers are supported on this module?
Freeport, ASCII, Modbus RTU master, Modbus RTU device, and USS are supported.
What are the key physical dimensions of the module?
Width: 30 mm. Height: 100 mm. Depth: 75 mm.
