The Siemens 6ES5541-8AA11 is a high-performance communication processor designed for the SIMATIC S5 family, specifically engineered to interface with PROFIBUS L2 (DP) networks. This CP 541 module enables seamless data exchange between S5 controllers and distributed I/O devices, drives, or other PLCs in demanding automation environments. With its robust RS-485 interface and support for both master and slave modes, the 6ES5541-8AA11 ensures deterministic communication with baud rates up to 12 Mbps. Ideal for legacy system upgrades or new installations requiring reliable fieldbus connectivity, this module is a critical component for maintaining or extending S5-based automation lines.
| Parameter |
Specification |
| Product Type |
Communication Processor (CP 541) |
| Model Number |
6ES5541-8AA11 |
| System Compatibility |
Siemens SIMATIC S5 (S5-115U, S5-135U, S5-155U) |
| Network Protocol |
PROFIBUS DP (L2) – EN 50170 |
| Interface Type |
RS-485, optically isolated |
| Max. Baud Rate |
12 Mbps |
| Max. Nodes per Segment |
125 (without repeater) |
| Operating Modes |
Master (Class 1), Slave (Class 2), or DP/M |
| Data Transmission |
Half-duplex, token passing with cyclic/acyclic services |
| Memory Capacity |
128 KB RAM for parameter/data buffering |
| Power Supply |
5 V DC via backplane bus; typical current 0.8 A |
| Power Dissipation |
4 W typical |
| Form Factor |
Single-width S5 module (approx. 40 mm wide) |
| Configuration Software |
COM 541 (version 2.0 or higher) for Windows/STEP 5 |
| Diagnostic Features |
LED indicators (BUS, ACT, ERR); bus status via software |
| Operating Temperature |
0 °C to +55 °C |
| Storage Temperature |
-25 °C to +70 °C |
| Humidity |
5% to 95% non-condensing |
| Protection Class |
IP20 (open-type device) |
| Weight |
Approx. 0.3 kg |
| Certifications |
CE, cULus, PROFIBUS Interoperability Tested |
| Shipping Information |
100% Original and New – Packed in anti-static packaging; global shipping available |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22