Key Features
- Serial communications module: Communications module for serial connection RS-422 and RS-485.
- Protocol support: Supports Freeport, 3964 (R), USS, and MODBUS RTU master and slave.
- Operating temperature: -40…+70 °C, OT4 with ST1/2 (+85 °C for 10 minutes).
- Transmission rate: 115200 Kbit/s.
- Connection: 15-Pin D-sub socket.
- Mounting: Rail based.
Technical Summary
| Product type designation | CM PtP RS 422 / 485 HF |
|---|---|
| Based on | 6ES7541-1AB00-0AB0 |
| Serial connection | RS-422 and RS-485 |
| Protocols | Freeport, 3964 (R), USS, MODBUS RTU master, slave |
| Transmission rate, max. RS 485 | 115.2 kbit/s |
| Transmission rate, max. RS 422 | 115.2 kbit/s |
| Mounting | Rail mounting; S7-1500 mounting rail |
| Power consumption from the backplane bus | 0.65 W |
Applications
- RS-422 and RS-485 serial connection: Serial connection between RS-422 and RS-485 devices and systems.
- MODBUS RTU communication: MODBUS RTU master and slave communication.
Frequently Asked Questions
What is the exact Siemens model of this communications module?
6AG2541-1AB00-4AB0, a SIPLUS S7-1500 CM PTP RS422/485 TX rail module.
Which serial interfaces and protocols does 6AG2541-1AB00-4AB0 support?
It supports RS-422 and RS-485, with Freeport, 3964 (R), USS, and MODBUS RTU master and slave.
What are the maximum transmission rate and cable length for this module?
The maximum transmission rate is 115.2 kbit/s for RS 485 and RS 422, and the maximum cable length is 1 200 m for both.
What power and mounting details are specified for 6AG2541-1AB00-4AB0?
Power consumption from the backplane bus is 0.65 W, and mounting is rail mounting on an S7-1500 mounting rail.
