下表为以OSI为参考模型的Profibus的协议架构：
表 4.1. 以OSI为参考模型的PROFIBUS协议架构
| OSI-Layer | PROFIBUS | ||||
|---|---|---|---|---|---|
| 7 | Application | DPV0 | DPV1 | DPV2 | Management |
| 6 | Presentation | --- | |||
| 5 | Session | ||||
| 4 | Transport | ||||
| 3 | Network | ||||
| 2 | Data Link | FDL | |||
| 1 | Physical | EIA-485 | Optical | MBP | |
 |  |  |
| 4.1.1.2. Profibus PA |  | 4.1.2.1. 应用层 |
