Rockwell-automation 1747-PCIS API Software - Open Controller Uživatelský manuál Strana 105
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Hodnocené. / 5. Na základě hodnocení zákazníků
Publication 1747-UM002A-US-P - June 2000
Library of Routines 6-45
The MsgID member of the msgbuf structure will be one of the
following values:
The data returned in the
MsgData member array depends upon the
value in
MsgID:
Separate queues hold messages received from each source. The host
application must call OC_PollScanner periodically to read messages
from each enabled source to prevent messages from being discarded.
If a message queue is full when a new message is received, the oldest
message is discarded and the next call to OC_PollScanner results in a
return value of ERR_OCOVERRUN. The queue can hold as many as
five messages.
Return Value:
Considerations:
Supported in the DOS API library and the Windows NT API library
This value: Means:
OCMSG_NONE No message available
OCMSG_IOINIT I/O module interrupt message, see OC_SetModuleInterrupt
OCMSG_DIINT Discrete input interrupt message, see OC_ConfigureDII
OCMSG_EOS_DMDIN End-of-scan notification message from OC_DemandInputScan
command, see OC_EnableEOSNotify
OCMSG_EOS_DMDOUT End-of-scan notification message from OC_DemandOutputScan
command, see OC_EnableEOSNotify
OCMSG_EOS End-of-scan notification message for timed I/O scan, see
OC_EnableEOSNotify
This MsgID: Returns:
MsgID=OCMSG_IOINT
MsgData[0] slot number that generated the interrupt
MsgID=OCMSG_DIINT
MsgData[0] mask of last bit transition that generated the interrupt
MsgData[2] lowbyte of count of matches that generated
the interrupt
MsgData[3] highbyte of count of matches that generated
the interrupt
MsgID=OCMSG_EOS_DMDIN
MsgID=OCMSG_EOS_DMDOUT
MsgID=OC_EOS
MsgData[0] number of scans that occurred since the last
end-of-scan message of this type was read
Name: Value: Description:
SUCCESS 0 scanner was polled successfully
ERR_OCACCESS 2
handle does not have access to scanner
ERR_OCOVERRUN 16 a message has been discarded
- API Software for 1
- 1746 I/O PCI 1
- Interface and 1
- 1747-OC Open 1
- Controller 1
- Important User Information 2
- European Communities (EC) 3
- Directive Compliance 3
- Who Should Use this 5
- Terminology 5
- Reference Material 5
- Additional Open Controller 6
- Documentation 6
- Preface 3 7
- Preface 4 8
- Table of Contents 9
- Table of Contents ii 10
- Table of Contents iii 11
- Table of Contents iv 12
- Overview 13
- Interface API to 14
- API Software for Windows NT 15
- Understanding the 1746 I/O 16
- PCI Interface Architecture 16
- Understanding the Open 16
- Controller Architecture 16
- Controller Architectures 17
- Scanner Modes 18
- Checking LED Indicators 19
- Installing the DOS API 20
- Installing the 20
- Windows NT API 20
- Installation Details 21
- 1-10 Overview 22
- Using the API 23
- Programming Conventions 24
- Windows NT Considerations 25
- Tools to Use 26
- << 30
- 2-10 Using the API 32
- Developing Applications 33
- Access the scanner 34
- Initialize the scanner 34
- Configure the scanner 35
- Control scanner operation 36
- Scan I/O 36
- Programming Example 37
- Access the 38
- Initialize the 39
- Configure 41
- Control scanner 41
- Programming Example for 43
- Windows NT 43
- Handling Interrupt 49
- Messages 49
- Handling Errors 49
- Determining Partition Sizes 50
- Using the API Structures 53
- Configuring I/O Modules 55
- Using M0-M1 Files 57
- Supported I/O Modules 58
- Library of Routines 61
- OC_ClearFault 62
- OC_CloseScanner 63
- OC_ConfigureDII 64
- OC_CreateIO 66
- Configuration 66
- OC_DemandInputScan 67
- OC_DemandOutputScan 68
- OC_DownloadIO 69
- OC_EnableEOSNotify 70
- OC_EnableForces 72
- OC_EnableSlot 73
- OC_ErrorMsg 74
- OC_ExtendedErrorMsg 75
- OC_GetBatteryStatus 77
- OC_GetDeviceInfo 78
- OC_GetExtendedError 79
- OC_GetInputImage 80
- UpdateCounter 80
- OC_GetIOConfiguration 81
- OC_GetLastFaultCause 82
- OC_GetMeasuredScan 84
- OC_GetResetCause 85
- OC_GetScannerInitInfo 86
- OC_GetScannerStatus 87
- OC_GetScanner 89
- WatchdogCount 89
- OC_GetStatusFile 90
- OC_GetSwitchPosition 94
- OC_GetTemperature 95
- OC_GetUserJumper 96
- OC_GetUserLEDState 97
- OC_GetVersionInfo 98
- OC_InitScanner 99
- Example: 100
- Description: 100
- Return Value: 100
- Considerations: 100
- OC_OpenScanner 101
- OC_PetHostWatchdog 103
- OC_PollScanner 104
- OC_ReadHostRetentive 106
- OC_ReadInputImage 107
- OC_ReadIOConfigFile 109
- OC_ReadModuleFile 110
- OC_ReadOutputImage 111
- OC_ReadSRAM 112
- OC_ResetScanner 114
- OC_SetForces 115
- OC_SetHostWatchdog 116
- Parameters: 117
- Description 117
- OC_SetInputUpdate 118
- OC_SetIOIdleState 119
- OC_SetModuleInterrupt 120
- OC_SetOutputUpdate 121
- OC_SetScanMode 123
- OC_SetScanTime 124
- OC_SetUserLEDState 125
- OC_SetupPowerFail 126
- OC_WaitForDII 128
- OC_WaitForEos 129
- OC_WaitForEosDmdIn 130
- OC_WaitForEosDmdOut 131
- OC_WaitForExtError 133
- OC_WaitForIoInt 134
- OC_WriteHostRetentive 135
- OC_WriteIOConfigFile 136
- OC_WriteModuleFile 137
- OC_WriteOutputImage 138
- OC_WriteSRAM 140
- Error Codes 143
- Extended Error Codes 144
- Error Codes A-3 145
- A-4 Error Codes 146
- Testing Function Calls 147
- Header File 149
- C-2 Header File 150
- Header File C-3 151
- C-4 Header File 152
- Header File C-5 153
- C-6 Header File 154
- Header File C-7 155
- C-8 Header File 156
- Header File C-9 157
- Windows NT Header File 158
- Header File C-11 159
- C-12 Header File 160
- Header File C-13 161
- C-14 Header File 162
- Header File C-15 163
- C-16 Header File 164
- Header File C-17 165
- C-18 Header File 166
- 2 Index 168
- Index 3 169
- 4 Index 170
- Allen-Bradley 171
- Publication Problem Report 171
- BUSINESS REPLY MAIL 172
- Back Cover 174
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