Technical Summary
| Product type designation | CM 1241 RS 232 / 422 / 485 |
|---|---|
| Interfaces/bus type | RS 232 (full duplex) / 422 / 485 |
| Number of interfaces | 1 |
| Input current from backplane bus 5 V DC, typ. | 170 mA |
| Power loss, typ. | 0.9 W |
| RS 232 Transmission rate, max. | 115.2 kbit/s |
| RS 485 Transmission rate, max. | 250 kbit/s |
| 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 |
Key Features
CM 1241 RS 232 / 422 / 485
Product type designation: CM 1241 RS 232 / 422 / 485.
Product type designation: CM 1241 RS 232 / 422 / 485.
1 interface
Interfaces/bus type: RS 232 (full duplex) / 422 / 485 with 1 interface.
Interfaces/bus type: RS 232 (full duplex) / 422 / 485 with 1 interface.
Modbus RTU support
Integrated protocol driver for Modbus RTU master and Modbus RTU device.
Integrated protocol driver for Modbus RTU master and Modbus RTU device.
Serial data options
Freeport supports 7 or 8 bits per character, 1 (Standard) or 2 stop bits, and parity settings including no parity (standard), even, odd, mark, and space.
Freeport supports 7 or 8 bits per character, 1 (Standard) or 2 stop bits, and parity settings including no parity (standard), even, odd, mark, and space.
Connection and diagnostics
Supplied with push-in terminal block and diagnostics function; DIAG LED is available for status of the outputs.
Supplied with push-in terminal block and diagnostics function; DIAG LED is available for status of the outputs.
Applications
Serial communication integration
Connection of RS 232 (full duplex), RS 422, or RS 485 serial communication.
Connection of RS 232 (full duplex), RS 422, or RS 485 serial communication.
Modbus RTU communication
Modbus RTU master and Modbus RTU device communication on a Modbus network segment.
Modbus RTU master and Modbus RTU device communication on a Modbus network segment.
Frequently Asked Questions
What is Siemens 6ES7241-1EA50-0XB0?
It is a SIMATIC S7-1200 G2 CM 1241 communication module.
Which interfaces does 6ES7241-1EA50-0XB0 support?
It supports RS 232 (full duplex) / 422 / 485.
Does the CM 1241 support Modbus RTU?
Yes. It supports Modbus RTU master and Modbus RTU device.
What are the maximum transmission rates for this module?
RS 232 supports up to 115.2 kbit/s and RS 485 supports up to 250 kbit/s.
What connection and protection details are listed for this model?
It has a push-in terminal block and IP20 degree of protection.
