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CIP API Functions ControlLogix Platform ♦ "C" Programmable
Developer's Manual Linux Application Development Module
Page 116 of 264 ProSoft Technology, Inc.
March 12, 2014
OCXcip_SetTagDbOptions
Syntax
int OCXcip_SetTagDbOptions (OCXHANDLE apihandle,
OCXTAGDBHANDLE tdbHandle,
DWORD optFlags,
WORD structAlign);
Parameters
apihandle
handle returned by previous call to OCXcip_Open
TagDbHandle
Handle created by previous call to OCXcip_CreateTagDbHandle
optFlags
Bit masked option flags field. Multiple options may be combined (with)
OCX_CIP_TAGDOPT_NORM_STRINGS:
Normalized strings are stored as <DATA><NULL> (instead of
<LEN><DATA>. OCXcip_GetSymbolInfo() and
OCXcip_GetStructMbrInfo() will report strings as having a datype of
OCX_CIP_TAGDB_DATYPE_NORM_STRING. The report eleSize will be
the size of the string data buffer including space for the NULL term
(OCX_CIP_STRING82s will have an eleSize of 83). The reported
hStruct will be zero(no a struct). When accessing normalized strings
(with OCXcip_AccessTagDataDb()), pass a daType of
PCX_CIP_TAGDB_DATYPE_NORM_STRING.
OCX_CIP_TAGDBOPT_NORM_BOOLS:
With this option, OCX_CIP_BOOL variables will be treated as bytes.
OCX_CIP_BYTE, OCX_CIP_WORD, OCX_CIPDWORD, and
OCX_CIP_LWORD types will be converted to arrays of OCX_CIP_BOOLs.
A normalized OCX_CIP_DWORD will be normalized to an array of 32
OCX_CIP_BOOL (which will occupy 32 bytes) for example. When
accessing arrays of BOOKs (with OCXcip_AccessTagDataDb()), any
number of array elements may be specified - masked and unmasked
controller reads/writes will be executed as required to complete the tag
access. Some OCX_CIP_BOOLs cannot be normalized. The
FUNCTION_GENERATOR structure has OCX_CIP_BOOLs that are
aliased into an OCX_CIP_DINT. Since the DINT base member is not
expanded into a BOOL array, the BOOL alias structure members cannot
be normalized. A special (and rarely used) data type has been created to
identify alias structure member OCX_CIP_BOOLS that could not be
normalized: OCX_CIP_TAGDB_DATYPE_NORM_BITMASK.
OCX_CIP_TAGDBOPT_STRUCT_MBR_ORDER_NATIVE: This option will
cause OCXcip_GetStructMbrInfo() to retrieve structure members in
native order (lowest offset to highest) instead of alphabetical order. This
is not a normalization option.
structAlign
Ignored if no normalization options are used. If normalization is enabled,
this may be 1, 2, 4, or 8 (4=recommended). Structure members will be
aligned according to the minimum alignment requirement. That is, if
structALign is 4, OCX_CIP_DINTs will be aligned on 4 byte boundaries,
but OCX_CIP_INTs will be aligned on 2 byte boundaries.
- MVI56E-LDM 1
- Your Feedback Please 2
- Warnings - MVI56E-LDM 2
- Contents 5
- 1 LDM Introduction 10
- In This Chapter 12
- 2.1 System Requirements 12
- 2.2 Package Contents - LDM 13
- 2.4.1 Setup Jumper - MVI56E 14
- telnetd file 20
- 2.8 Module Rescue 27
- 3 Development Environment 29
- 3.2 Using Eclipse 33
- 3.2.1 Building a Project 33
- python createimage.py 36
- 4.1 API Library - MVI56E 39
- 4.1.1 Header File 39
- 4.1.2 Sample Code 39
- 4.3 CIP API Functions 42
- 4.4 Backplane Device Driver 42
- 4.5 Sample Code 44
- 4.10 Sample Tutorials 51
- 4.11 Ethernet Sample 52
- 4.12 Serial Sample 55
- 4.13 Led_Sample 56
- 4.14 Backplane_Sample 57
- 4.15 Tag_Sample 59
- 4.16 Sample Applications 61
- 5 CIP API Functions 76
- OCXcip_Open 79
- OCXcip_OpenNB 80
- OCXcip_Close 83
- 5.2 Object Registration 85
- OCXcip_RegisterAssemblyObj 85
- OCXcip_UnregisterAssemblyObj 88
- OCXcip_RegisterFatalFaultRtn 90
- OCXcip_RegisterResetReqRtn 92
- 5.4 CIP Callback Functions 94
- 5.5 Connected Data Transfer 105
- OCXcip_WriteConnected 105
- OCXcip_ReadConnected 107
- OCXcip_ImmediateOutput 109
- OCXcip_WaitForRxData 111
- 5.6 Tag Access Functions 116
- OCXcip_AccessTagData 116
- OCXcip_CreateTagDbHandle 120
- OCXcip_DeleteTagDbHandle 121
- OCXcip_SetTagDbOptions 122
- OCXcip_BuildTagDb 125
- OCXcip_TestTagDbVer 127
- OCXcip_GetSymbolInfo 129
- OCXcip_GetStructInfo 132
- OCXcip_GetStructMbrInfo 135
- OCXcip_GetTagDbTagInfo 138
- OCXcip_AccessTagDataDb 141
- 5.7 Messaging 144
- OCXcip_GetDeviceIdObject 145
- OCXcip_GetDeviceICPObject 148
- OCXcip_GetDeviceIdStatus 151
- OCXcip_GetExDeviceObject 155
- OCXcip_GetWCTime 158
- OCXcip_SetWCTime 162
- OCXcip_GetWCTimeUTC 165
- OCXcip_SetWCTimeUTC 169
- 5.8 Miscellaneous Functions 172
- OCXcip_GetIdObject 173
- OCXcip_SetIdObject 175
- OCXcip_GetActiveNodeTable 177
- OCXcip_MsgResponse 179
- OCXcip_GetVersionInfo 182
- OCXcip_GetUserLED 184
- OCXcip_SetUserLED 186
- OCXcip_GetModuleStatus 188
- OCXcip_SetModuleStatus 190
- OCXcip_GetLED3 192
- OCXcip_SetLED3 194
- OCXcip_ErrorString 196
- OCXcip_SetDisplay 198
- OCXcip_GetDisplay 200
- OCXcip_GetSwitchPosition 202
- OCXcip_GetSerialConfig 204
- OCXcip_Sleep 207
- OCXcip_CalculateCRC 209
- OCXcip_SetModuleStatusWord 211
- OCXcip_GetModuleStatusWord 213
- 6 Cable Connections 215
- 6.3 RS-422 218
- 6.4.1 RS-485 and RS-422 Tip 219
- 7.2.1 Returning Any Product 221
- 7.3 LIMITED WARRANTY 223
- 7.3.8 No Other Warranties 229
- 7.3.9 Allocation of Risks 229
- 7.4 Open Source Licensing 230
- 7.5 GNU Public License 231
- 7.6 Eclipse Public License 245
- 7.7 Python Public License 251
- 7.8 GCC Public License 257
- 8 Glossary of Terms 260
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