NMT » Historie » Version 1
Maximilian Seesslen, 11.07.2023 13:50
| 1 | 1 | Maximilian Seesslen | h1. NMT |
|---|---|---|---|
| 2 | |||
| 3 | h2. Actuator introduction |
||
| 4 | |||
| 5 | When introduction is requested by system command, each device must send Its UID (function code "NMT introduce") and an description. |
||
| 6 | The NodeId may conflict due to an network error. But the master can detect different UUIDs with same NodeId. |
||
| 7 | |||
| 8 | h2. |
||
| 9 | |_. Size |_. Decription |_. Examples | |
||
| 10 | | 2 | Object | Object | |
||
| 11 | | 6 | MAC/Unique ID| 48Bit | |
||
| 12 | |||
| 13 | h3. Objects |
||
| 14 | |||
| 15 | |_. Size |_. Decription | |
||
| 16 | |1 | Request intoruction | |
||
| 17 | |2 | MAC low | |
||
| 18 | |3 | MAC high | |
||
| 19 | |4 | Protocol versions | |
||
| 20 | |5 | Firmware version | |
||
| 21 | |6 | Product Code | |
||
| 22 | |7 | Node-Id | |
||
| 23 | |||
| 24 | |||
| 25 | h3. Protocol versions |
||
| 26 | |||
| 27 | |_. Size |_. Decription | |
||
| 28 | |1 | TDT Major | |
||
| 29 | |1 | TDT Minor | |
||
| 30 | |1 | NMT Major | |
||
| 31 | |1 | NMT Minor | |
||
| 32 | |1 | Blob Major | |
||
| 33 | |1 | Blob Minor | |
||
| 34 | |||
| 35 | h2. Usecase: Setting Node-ID |
||
| 36 | |||
| 37 | Two nodes may have the same Node-ID. When scanning the network, the nodes will overwrite the counterparts information. |
||
| 38 | The "NMT-Introduce"-function code is used by the nodes to send theyr complete UID. NMT can then send |
||
| 39 | The new NodeID can not be part of the CAN-ID because the device may be filtering it out. (The whole NMT ) |