Those in the following listed UTDs and FBs serve for "open communication" with otherEthernet capable communication partners via your user program. These blocks are partof the Siemens SIMATIC Manager. You will find these in the "Standard Library" at "Com-munication Blocks". Please consider when using the blocks for open communication thatthe partner station does not have to be configured with these blocks. This can be config-ured with AG_SEND / AG_RECEIVE or IP_CONFIG.UDTsFB Label Connection-oriented protocols: TCPnative as per RFC 793, ISO on TCP asper RFC 1006Connectionless protocol: UDP as perRFC 768UDT 65 TCON_PAR Data structure for assigning connectionparametersData structure for assigning parametersfor the local communications accesspointUDT 66 TCON_ADR Data structure for assigning addressingparameters for the remote partnerFBsFB Label Connection-oriented protocols: TCPnative as per RFC 793, ISO on TCP asper RFC 1006Connectionless protocol: UDP as perRFC 768FB 63 TSEND Sending dataFB 64 TRCV Receiving dataFB 65 TCON Establishing a connection Configuring the local communicationsaccess pointFB 66 TDISCON Terminating a connection Closing the local communications accesspointFB 67 TUSEND Sending dataFB 68 TURCV Receiving data8.11 NCM diagnostic - Help for error diagnosticThe VIPA PROFINET IO controller supports the Siemens NCM diagnostic tool. The NCMdiagnostic tool is part of the Siemens SIMATIC Manager. This tool delivers informationabout the operating state of the communication functions of the online CPs dynamically.The following diagnostic functions are available:n Check operating state at Ethernetn Read the diagnostic buffer of the PROFINET IO controllern Diagnostic of Siemens S7 connectionsHandling blocksSiemens NCM S7 diag-nosticVIPA System 300S+ Deployment Ethernet communication - productiveNCM diagnostic - Help for error diagnosticHB140 | CPU | 317-4PN23 | en | 18-01 127