1 Introduction......................................................................................... 1
1.1 Ethernet POWERLINK................................................................ 1
1.2 Key Features................................................................................. 2
1.3 Supported object dictionary entries .............................................. 2
2 Application Programming Interface ................................................. 4
2.1 Software Structure........................................................................ 4
2.1.1 Directory Structure .......................................................... 5
2.1.2 Module Structure............................................................. 6
2.1.3 Header files ..................................................................... 7
2.1.4 Target dependant modules .............................................. 7
2.2 Data types ..................................................................................... 7
2.3 Functions .................................................................................... 14
2.3.1 EPL API Layer .............................................................. 14
2.3.1.1 Event callback function tEplApiCbEvent ...... 14
2.3.1.2 Sync callback function tEplApiCbSync......... 31
2.3.1.3 Function EplApiInitialize() ............................ 32
2.3.1.4 Function EplApiShutDown() ......................... 35
2.3.1.5 Function EplApiExecNmtCommand() .......... 36
2.3.1.6 Function EplApiMnTriggerStateChange() .... 37
2.3.1.7 Function EplApiReadObject() ....................... 38
2.3.1.8 Function EplApiWriteObject() ...................... 41
2.3.1.9 Function EplApiFreeSdoChannel() ............... 42
2.3.1.10 Function EplApiReadLocalObject() .............. 43
2.3.1.11 Function EplApiWriteLocalObject() ............. 44
2.3.1.12 Function EplApiLinkObject() ........................ 44
2.3.1.13 Function EplApiProcess() .............................. 45
2.3.1.14 Function EplApiProcessImageSetup() ........... 46
2.3.1.15 Function EplApiProcessImageExchangeIn() . 47
2.3.1.16 Function EplApiProcessImageExchangeOut()
........................................................................ 48
2.3.2 Edrv module .................................................................. 49
2.3.2.1 Callback Function tEdrvRxHandler() ............ 49
2.3.2.2 Callback Function tEdrvTxHandler() ............ 51
2.3.2.3 Function EdrvInit() ........................................ 52
2.3.2.4 Function EdrvShutdown().............................. 52
2.3.2.5 Function EdrvDefineRxMacAddrEntry() ...... 53
2.3.2.6 Function EdrvUndefineRxMacAddrEntry() .. 53
2.3.2.7 Function EdrvAllocTxMsgBuffer() ............... 54
2.3.2.8 Function EdrvReleaseTxMsgBuffer() ........... 54
2.3.2.9 Function EdrvSendTxMsg() .......................... 55
2.3.2.10 Function EdrvTxMsgReady() ........................ 55 openPOWERLINK: Ethernet POWERLINK Protocol Stack
© SYS TEC electronic GmbH 2008 L-1098e_2
2.3.2.11 Function EdrvTxMsgStart()........................... 56
3 Object Dictionary.............................................................................. 57
3.1 Fundamentals ............................................................................. 57
3.2 Structure of an OD, Standardized Profiles................................. 57
3.2.1 Communication Profile ................................................. 58
3.2.2 Device Profiles.............................................................. 58
3.3 Object Dictionary Structure ....................................................... 58
3.4 Object Dictionary Definition...................................................... 59
3.5 Example...................................................................................... 66
4 Configuration and Scaling ............................................................... 68
4.1 General configuration of the EPL stack..................................... 68
4.2 Ethernet driver............................................................................ 69
4.3 DLL module ............................................................................... 70
4.4 OBD module .............................................................................. 70
4.5 SDO modules ............................................................................. 71
4.6 Timer module ............................................................................. 71
4.7 EPL API Layer ........................................................................... 72
Glossary ...................................................................................................... 73
References................................................................................................... 75
2023-03-09 21:30:10
315KB
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协议栈白皮书2.0是基于协议栈白皮书1.0进一步研究协议栈架构和协议层
功能。这本白皮书针对工业物联网等主要应用场景，分析了新的协议栈架构和协
议层功能的优化，试图从中寻找更合适的解决方案。同时，现有网络中的问题，
如网络拥塞等，也是本白皮书试图用全新的协议栈解决的问题。白皮书中提供了
一些解决方案，引入新的自适应层或功能单元等。
2021-06-09 09:02:17
8.6MB