Create a custom CIP Object

[eipstackgroup]

Create a custom CIP Object

[azoitl]

The only examples available are the implementations of the standard CIP objects needed for a generic communications adapter. An object where many of the neede functionality can be found is the TCPIP Interface object.

The general sequence for setting up such an object is:

1. Create a CIPObject:
   p_stTCPIPClass = createCIPClass(YOUR_OBJECT_CLASS_CODE, /Check CIP speck for valid ranges */
   0, / # class attributes_/
   0xffffffff, /_ class getAttributeAll mask keep it to all 1 so that the default get attribute all will work_/
   0, /_ # class services_/
   1, /_ # instance attributes_/
   0xffffffff, /_ instance getAttributeAll mask_/
   1, /_ # of additional instance services (getAttributeSingle and getAttributeAll are added per default_/
   1, /_ # instances which should already be create now_/
   "our obect name",
   1 /_revision of your object, 1 is here a good thing to start with */
   );

2. configure your instances:
   attributes should typically be put into the instances of your object

   pstInstance = getCIPInstance(p_stTCPIPClass, 1); /* bind attributes to the instance #1 that was
   created above*/

   insertAttribute(pstInstance,
   1, /* Atrtibute number /
   CIP_UINT, / data type of attribute _/
   (void ) &attributeMemory); /_a memory place for your attribute/

3. configure the instance services
   insertService(p_stTCPIPClass, CIP_SET_ATTRIBUTE_SINGLE,
   &setAttributeSingleMyObject, "SetAttributeSingle");

4. Implement the service:
   EIP_STATUS
   setAttributeSingleTCP(S_CIP_Instance pa_pstObjectInstance,
   S_CIP_MR_Request *pa_pstMRRequest, S_CIP_MR_Response *pa_pstMRResponse)
   {
   if (1 == pa_pstMRRequest->RequestPath.AttributNr)
   {
   / This is a request for our attribute one_/
   decodeData(CIP_UINT, &attributeMemory, &pa_pstMRRequest->Data);
   /_TODO if you have more instances: determine which instance the request was target to /
   pa_pstMRResponse->GeneralStatus = CIP_ERROR_SUCCESS;
   }
   else
   {
   / we don't have this attribute */
   pa_pstMRResponse->GeneralStatus = CIP_ERROR_ATTRIBUTE_NOT_SUPPORTED;
   }

   pa_pstMRResponse->SizeofAdditionalStatus = 0;
   pa_pstMRResponse->DataLength = 0;
   pa_pstMRResponse->ReplyService = (0x80 | pa_pstMRRequest->Service);
   return EIP_OK_SEND;
   }

I hope this helps.

[MartinMelikMerkumians]

As no further questions were posted to this topic I will close this issue.