Product Description
Key Features
- Product type: CM 1241 RS 232 communication module for SIMATIC S7-1200.
- Interface and connection: 1 RS 232C (V.24) interface with a 9-pole D-sub (pin) connection.
- Supply voltage: Rated supply: 24 V DC; permissible range: 20.4 V to 28.8 V DC.
- Protocol support: Supports Freeport, ASCII, Modbus RTU master, and Modbus RTU device; ASCII is available as a library function.
- Freeport data: Maximum telegram length: 1 kbyte; 7 or 8 bits per character; 1 (Standard), 2 stop bits.
- Protection: IP degree of protection: IP20.
Technical Summary
| Product type | CM 1241 RS 232 |
|---|---|
| Supply voltage | 24 V DC rated; permissible range 20.4 V to 28.8 V DC |
| Interface | 1 x RS 232C (V.24) |
| Connection | 9-pole D-sub (pin) |
| Protocol drivers | Freeport, ASCII, Modbus RTU master, Modbus RTU device |
| Current consumption, max. | 200 mA; From backplane bus 5 V DC |
| Power loss, typ. | 1.1 W |
| IP degree of protection | IP20 |
| Product lifecycle | Active Product |
Frequently Asked Questions
What order number should be confirmed for this CM 1241 module?
Confirm Siemens order number 6ES7241-1AH32-0XB0 and product type CM 1241 RS 232.
Which interface and connector does the module have?
It has 1 RS 232C (V.24) interface with a 9-pole D-sub (pin) connection.
What supply voltage does the module require?
The rated supply is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
Which protocols are supported?
It supports Freeport, ASCII, Modbus RTU master, and Modbus RTU device. ASCII is available as a library function.
What protection rating does the module have?
The IP degree of protection is IP20.
