Rockwell-automation 1747-PCIS API Software - Open Controller Bedienungsanleitung Seite 112
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Publication 1747-UM002A-US-P - June 2000
6-52 Library of Routines
Return Value:
Considerations:
Supported in the DOS API library and the Windows NT API library
Example:
HANDLE Handle;
WORD outputdata[2];
int retcode;
retcode = OC_ReadOutputImage( Handle, NULL, 6, 0, 2,
outputdata );
/* Read slot 6 data, first 2 words, directly from the output
image */
/* table to outputdata buffer */
OC_ReadSRAM
OC_ReadSRAM reads data from the battery-backed user memory.
Syntax:
int OC_ReadSRAM(HANDLE Handle, BYTE *bufptr,
DWORD offset, DWORD length);
Description:
The battery-backed memory may be used to store important data that
needs to be preserved in the event of a power failure. The size of the
available memory in bytes may be obtained using OC_GetDeviceInfo.
handle must be a valid handle returned from OC_OpenScanner.
bufptr points to a buffer to be receive the data. offset specifies
Name: Value: Description:
SUCCESS 0 output image was read successfully
ERR_OCACCESS 2
handle does not have access to scanner
ERR_OCPARAM 8 parameter contains invalid value
ERR_OCSCANCFG 14 scanner has not been configured
ERR_OCSLOT 12 slot number is invalid
IMPORTANT
It is recommended that the integrity of data stored in
the user memory be verified by some means. The
OC_CalculateCRC function may be used to generate
a 16-bit CRC that may be used for this purpose.
- 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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