uC-Modbus源码指南.pdf_uc/modbus

modbus

Manual

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Micriµm

µC/Modbus

V2.13.00

(µC/Modbus-S and µC/Modbus-M)

User’s Manual

www.Micrium.com

µC/Modbus

Table of Contents

Revision History ................................................................................. 5

1.00 Introduction ......................................................................................... 6

1.01 Topologies .......................................................................................... 8

1.02 µC/Modbus Architecture ............................................................... 10

2.00 Directories and Files ........................................................................ 13

2.01 Directories and Files, Target Independent Source Code ................. 13

2.02 Directories and Files, RTOS Interface .............................................. 14

2.03 Directories and Files, Product Specific Files .................................... 15

2.04 Directories and Files, CPU and Compiler Specific Files ................... 15

3.00 Using µC/Modbus .......................................................................... 17

3.01 Using µC/Modbus, MB_CfgCh() .................................................... 20

3.02 Using µC/Modbus, MB_ChToPortMap() ........................................ 22

3.03 Using µC/Modbus, MB_Exit() ........................................................ 23

3.04 Using µC/Modbus-M, MBM_FC01_CoilRd() ................................. 24

3.05 Using µC/Modbus-M, MBM_FC02_DIRd() .................................... 26

3.06 Using µC/Modbus-M, MBM_FC03_HoldingRegRd() ..................... 28

3.07 Using µC/Modbus-M, MBM_FC03_HoldingRegRdFP() ................ 30

3.08 Using µC/Modbus-M, MBM_FC04_InRegRd() .............................. 32

3.09 Using µC/Modbus-M, MBM_FC05_CoilWr() ................................. 34

3.10 Using µC/Modbus-M, MBM_FC06_HoldingRegWr() ..................... 36

3.11 Using µC/Modbus-M, MBM_FC06_HoldingRegWrFP() ................ 38

3.12 Using µC/Modbus-M, MBM_FC08_Diag() ..................................... 40

3.13 Using µC/Modbus-M, MBM_FC15_CoilWr() ................................. 42

3.14 Using µC/Modbus-M, MBM_FC16_HoldingRegWrN () ................. 44

3.15 Using µC/Modbus-M, MBM_FC16_HoldingRegWrNFP() ............. 46

3.16 Using µC/Modbus, MB_Init() ......................................................... 48

3.17 Using µC/Modbus, MB_ModeSet() ................................................ 49

3.18 Using µC/Modbus-S, MB_NodeAddrSet() ..................................... 50

3.19 Using µC/Modbus-S, MB_WrEnSet() ............................................ 51

4.00 Configuring µC/Modbus ................................................................. 52

4.01 Configuring µC/Modbus, MODBUS_CFG_SLAVE_EN ................. 52

4.02 Configuring µC/Modbus, MODBUS_CFG_MASTER_EN .............. 52

4.03 Configuring µC/Modbus, MODBUS_CFG_ASCII_EN ................... 52

µC/Modbus

4.04 Configuring µC/Modbus, MODBUS_CFG_RTU_EN ..................... 53

4.05 Configuring µC/Modbus, MODBUS_CFG_MAX_CH ..................... 53

4.06 Configuring µC/Modbus, MODBUS_CFG_BUF_SIZE .................. 53

4.07 Configuring µC/Modbus, MODBUS_CFG_FP_EN ........................ 53

4.08 Configuring µC/Modbus, MODBUS_CFG_FP_START_IX ............ 53

4.09 Configuring µC/Modbus, MODBUS_CFG_FC01_EN .................... 54

4.10 Configuring µC/Modbus, MODBUS_CFG_FC02_EN .................... 54

4.11 Configuring µC/Modbus, MODBUS_CFG_FC03_EN .................... 54

4.12 Configuring µC/Modbus, MODBUS_CFG_FC04_EN .................... 54

4.13 Configuring µC/Modbus, MODBUS_CFG_FC05_EN .................... 54

4.14 Configuring µC/Modbus, MODBUS_CFG_FC06_EN .................... 54

4.15 Configuring µC/Modbus, MODBUS_CFG_FC08_EN .................... 55

4.16 Configuring µC/Modbus, MODBUS_CFG_FC15_EN .................... 55

4.17 Configuring µC/Modbus, MODBUS_CFG_FC16_EN .................... 55

4.18 Configuring µC/Modbus-S, MODBUS_CFG_FC20_EN ................ 55

4.19 Configuring µC/Modbus-S, MODBUS_CFG_FC21_EN ................ 55

4.20 Configuring µC/Modbus, RAM Memory Requirements ................. 56

5.00 µC/Modbus-S, Accessing application data .................................... 57

5.01 µC/Modbus-S, MB_CoilRd() .......................................................... 58

5.02 µC/Modbus-S, MB_CoilWr() .......................................................... 60

5.03 µC/Modbus-S, MB_DIRd() ............................................................ 62

5.04 µC/Modbus-S, MB_InRegRd() ...................................................... 64

5.05 µC/Modbus-S, MB_InRegRdFP() .................................................. 66

5.06 µC/Modbus-S, MB_HoldingRegRd() ............................................. 68

5.07 µC/Modbus-S, MB_HoldingRegRdFP() ........................................ 70

5.08 µC/Modbus-S, MB_HoldingRegWr() ............................................. 72

5.09 µC/Modbus-S, MB_HoldingRegWrFP() ........................................ 74

5.10 µC/Modbus-S, MB_FileRd() .......................................................... 76

5.11 µC/Modbus-S, MB_FileWr() .......................................................... 78

6.00 Board Support Package (BSP) ......................................................... 80

6.01 BSP, MB_CommExit() ...................................................................... 80

6.02 BSP, MB_CommPortCfg() ................................................................ 81

6.03 BSP, MB_CommRxTxISR_x_Handler() ........................................... 82

6.04 BSP, MB_CommRxIntEn() ............................................................... 83

6.05 BSP, MB_CommRxIntDis() .............................................................. 83

6.06 BSP, MB_CommTx1() ...................................................................... 83

6.07 BSP, MB_CommTxIntEn()................................................................ 84

6.08 BSP, MB_CommTxIntDis() ............................................................... 84

µC/Modbus

6.09 BSP, MB_RTU_TmrInit() .................................................................. 85

6.10 BSP, MB_RTU_TmrExit() ................................................................. 85

6.11 BSP, MB_RTU_TmrISR_Handler() .................................................. 85

7.00 RTOS Interface ................................................................................ 86

7.01 RTOS Interface, MB_OS_Init() ......................................................... 89

7.02 RTOS Interface, MB_OS_Exit() ........................................................ 90

7.03 RTOS Interface, MB_OS_RxSignal() ............................................... 91

7.04 RTOS Interface, MB_OS_RxWait() .................................................. 92

7.05 RTOS Interface, Configuration ......................................................... 93

8.00 No-OS Interface ............................................................................... 94

9.00 µC/Modbus Program Flow ............................................................. 97

9.01 µC/Modbus-S, ASCII Rx and Tx .................................................. 98

9.02 µC/Modbus-S, RTU Rx and Tx .................................................. 100

9.03 µC/Modbus-M, ASCII Rx and Tx................................................ 102

9.04 µC/Modbus-M, RTU Rx and Tx .................................................. 104

10.00 Acronyms, Abbreviations and Mnemonics ..................................... 106

Licensing 108

References 108

Contacts 108

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