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ControlLogix Platform ♦ "C" Programmable CIP API Functions
Linux Application Development Module Developer's Manual
ProSoft Technology, Inc. Page 111 of 264
March 12, 2014
daType
Data type code (OCX_CIP_DINT, etc).
eleSize
Size of a single data element (DINT=4, BOOL=1, etc).
opType
OCX_CIP_TAG_READ_OP or OCX_CIP_TAG_WRITE_OP.
numEle
Number of elements to read or write - must be 1 if not array
data
Pointer to read/write data buffer. Strings are expected to be
in OCX_CIP_STRING82_TYPE format. The size of the data is
assumed to be numEle * eleSize.
wrMask
Write data mask. Set to NULL to execute a non-masked
write. If a masked write is specified, numEle must be 1 and
the total amount of write data must be 8 bytes or less. Only
signed and unsigned integer types may be written with a
masked write. Only data bits with corresponding set wrMask
bits will be written. If a wrMask is supplied, it is assumed to be
the same size as the write data (eleSize * numEle).
result
Read/write operation result (output). Set to OCX_SUCCESS if
operation successful, else if failure. This value is not set if
the function return value is other than OCX_SUCCESS or opType
is OCX_CIP_TAG_NO_OP.
Return Value
OCX_SUCCESS
operation was successful
else
An access error occurred. Individual access result parameters not
set.
Example
OCXHANDLE Handle;
OCXCIPTAGACCESS ta1;
OCXCIPTAGACCESS ta2;
OCXCIPTAGACCESS * pTa[2];
INT32 wrVal;
INT16 rdVal;
int rc;
ta1.tagName = "dintArr[2];
ta1.daType = OCX_CIP_DINT;
ta1.eleSize = 4;
ta1.opType = OCX_CIP_TAG_WRITE_OP;
ta1.numEle = 1;
ta1.data = (void*) &wrVal;
ta1.wrMask = NULL;
ta1.result = OCX_SUCCESS;
wrVal = 123456;
ta2.tagName = "intVal";
ta2.daType = OCX_CIP_INT;
- 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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