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CIP API Functions ControlLogix Platform ♦ "C" Programmable
Developer's Manual Linux Application Development Module
Page 90 of 264 ProSoft Technology, Inc.
March 12, 2014
Return Value
The connect_proc routine must return one of the following values if reason is
OCX_CIP_CONN_OPEN:
Note: If reason is OCX_CIP_CONN_OPEN_COMPLETE or OCX_CIP_CONN_CLOSE, the return value
must be OCX_SUCCESS.
OCX_SUCCESS
connection is accepted
OCX_CIP_BAD_INSTANCE
instance is invalid
OCX_CIP_NO_RESOURCE
unable to support connection due to resource limitations
OCX_CIP_FAILURE
connection is rejected: extendederr may be set
Extended Error Codes
If the open request is rejected, extendederr can be set to one of the following
values:
OCX_CIP_EX_CONNECTION_USED
The requested connection is already in use.
OCX_CIP_EX_BAD_RPI
The requested packet interval cannot be supported.
OCX_CIP_EX_BAD_SIZE
The requested connection sizes do not match the
allowed sizes.
Example
OCXHANDLE Handle;
OCXCALLBACK connect_proc( OCXHANDLE objHandle, OCXCIPCONNSTRUCT
*sConn)
{
// Check reason for callback
switch( sConn->reason )
{
case OCX_CIP_CONN_OPEN:
// A new connection request is being made. Validate the
//parameters and determine whether to allow the connection.
//Return OCX_SUCCESS if the connection is to be established,
//or one of the extended error codes if not. See the sample
//code for more details.
return(OCX_SUCCESS);
case OCX_CIP_CONN_OPEN_COMPLETE:
// The connection has been successfully opened. If
// necessary,
// call OCXcip_WriteConnected to initialize transmit data.
return(OCX_SUCCESS);
case OCX_CIP_CONN_NULLOPEN:
// New configuration data is being passed to the open connection.
//Process the data as necessary and return success.
return(OCX_SUCCESS);
case OCX_CIP_CONN_CLOSE:
// This connection has been closed - inform the application
return(OCX_SUCCESS);
}
}
- 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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