PROFIBUS DP-Master

The Application Interface 293/315
6.3.16 PROFIBUS_DL_CMD_SEND_FDL_STATUS_REQ/CNF – Obtain FDL
Status
This packet is used for obtaining the FDL status of a specific PROFIBUS-DP slave. According to the
PROFIBUS-DP specification, the FDL status is defined as “the token ring status of an FDL entity
conveyed in the FC field of the reply frames”. This also exactly represents the entry of this specific
slave in the life list.
Packet Structure Reference
typedef struct PROFIBUS_DL_SEND_FDL_STATUS_REQ_Ttag
{
TLR_UINT8 bDstAddr; /* Value to be set */
}
PROFIBUS_DL_SEND_FDL_STATUS_REQ_T;
typedef struct PROFIBUS_DL_PACKET_SEND_FDL_STATUS_REQ_Ttag
{
TLR_PACKET_HEADER_T tHead;
PROFIBUS_DL_SEND_FDL_STATUS_REQ_T tData;
}
PROFIBUS_DL_PACKET_SEND_FDL_STATUS_REQ_T;
Packet Description
structure PROFIBUS_DL_PACKET_SEND_FDL_STATUS_REQ_T
Type: Request
Area Variable Type Value / Range Description
tHead
tData
structure TLR_PACKET_HEADER_T
ulDest UINT32 0x20/
PB_DL_QUE
Destination Queue-Handle
ulSrc UINT32 0 ... 2 32 -1 Source Queue-Handle
ulDestId UINT32 ulDL0Id Destination End Point Identifier, specifying the final
receiver of the packet within the Destination Process.
Set to 0 for the Initialization Packet
ulSrcId UINT32 ulAPMS0Id Source End Point Identifier, specifying the origin of the
packet inside the Source Process
ulLen UINT32 1 Packet Data Length in bytes
ulId UINT32 0 ... 2 32 -1 Packet Identification as unique number generated by
the Source Process of the Packet
ulSta UINT32 See section 7.3 Error Codes of the DL-Task
ulCmd UINT32 0x132 PROFIBUS_DL_CMD_SEND_FDL_STATUS_REQ -
Command
ulExt UINT32 0 Extension not in use, set to zero for compatibility
reasons
ulRout UINT32 x Routing, do not touch
structure PROFIBUS_DL_SEND_FDL_STATUS_REQ_T
bDstAddr UINT8 Slave address whose status is to be requested
Table 179: PROFIBUS_DL_CMD_SEND_FDL_STATUS_REQ – Obtain FDL Status Request
PROFIBUS DP-Master |
DOC061001API12EN | Revision 12 | English | 2010-12 | Released | Public © Hilscher, 2006-2010