PRP Adapter Diagnosis
The diagnosis of the PRP adapter is done via the "Parameters (Online)".
These parameters and values are based on the standard "IEC 62439-3:2018" from chapter 4.2.7, table 2 and 3.
Name | Type | Description |
|---|---|---|
LinkStatus | TcPrpAdapterLinkStatus | Specifies information about the network interface. See at TcPrpAdapterLinkStatus structure the subelements. |
NodeTableClear | BOOL | Allows emptying the "NodeTable". |
NodeCount | UDINT | Indicates the current number of entries in the "NodeTable". |
NodeTable | TcPrpNodeEntry[512] | Provides a table with information about all detected nodes in the network. See TcPrpNodeEntry structure for the details and subelements of this table. |
TcPrpAdapterLinkStatus structure
The diagnosis from the network interfaces to LAN-A and LAN-B is done by the following structure via the parameter "LinkStatus".
Name | Type | Description |
|---|---|---|
LinkSpeedA | UDINT | Specifies the transfer rate from the network interface to the LAN-A. |
LinkSpeedB | UDINT | Specifies the transfer rate from the network interface to LAN-B. |
bLinkA | BOOL | Indicates whether a connection was detected on the network interface to the LAN-A. |
bLinkB | BOOL | Indicates whether a connection was detected on the network interface to LAN-B. |
TcPrpNodeEntry structure
The diagnosis of the detected nodes in the network is done via the "NodeTable". This "NodeTable" consists of an array of structures with up to 1024 entries. A maximum of 64 entries are displayed in the TwinCAT XAE. The complete list can be retrieved via ADS. The current number of entries in this list is specified by the "NodeCount" parameter. The following describes the structure of the entries and its values.
Name | Type | Description |
|---|---|---|
MacAddress | MAC_ADDRESS | Specifies the MAC address to the entry of the node. |
bSanA | BOOL | Indicates whether the node was detected as a SAN (Single Attached Node) on the LAN-A. |
bSanB | BOOL | Indicates whether the node was detected as a SAN (Single Attached Node) on the LAN-B. |
CntReceivedA | UDINT | Specifies the number of frames received from LAN-A. |
CntReceivedB | UDINT | Specifies the number of frames received from LAN-B. |
CntErrWrongLanA | UDINT | Specifies the number of frames received from LAN-A indicating a wrong LAN indicator. |
CntErrWrongLanB | UDINT | Specifies the number of frames received from LAN-B indicating a wrong LAN indicator. |
CntDuplicateDiscardLanA | UDINT | Specifies the number of received duplicates and thus discarded frames from LAN-A. |
CntDuplicateDiscardLanB | UDINT | Specifies the number of received duplicates and thus discarded frames from LAN-B. |
CntSupervisionFrameLanA | UDINT | Specifies the number of PRP supervision frames received from LAN-A. |
CntSupervisionFrameLanB | UDINT | Indicates the number of received PRP supervision frames from LAN-B. |
CntRxErrLanA | UDINT | Specifies the number of errors when receiving frames from LAN-A. |
CntRxErrLanB | UDINT | Specifies the number of errors when receiving frames from LAN-B. |
CntTxErrLanA | UDINT | Specifies the number of errors when sending frames in LAN-A. |
CntTxErrLanB | UDINT | Specifies the number of errors when sending frames in LAN-B. |
TimeLastSeenA | UDINT | Specifies the time in milliseconds before which a frame was last received from these nodes on the LAN-A. |
TimeLastSeenB | UDINT | Specifies the time in milliseconds before which a frame was last received from these nodes on the LAN-B. |