Kopplung Profibus Dp; Dpdiag Diagnostics Overview, Profibus Dp - Siemens FM 458-1 DP Manual

2.2

Kopplung PROFIBUS DP

2.2.1 DPDIAG Diagnostics overview, PROFIBUS DP

Symbol
DP module name.connector ― GV
Brief description
Mode of operation
Function Blocks - FM 458-1 DP
Edition 12.2004
DPDIAG
CTS
Enable ― BO EN
The task of the DPDIAG function block is to provide the following
information and data to the user program (i.e. the configured CFC
software):
• System diagnostics (an overview of which slave had signaled
diagnostics)
• Data transfer list (overview of with which slave data transfer took
place within the PROFIBUS-DP time frame)
• Master status (master-specification information such as the Stop,
Operate and Clear stati)
The PROFIBUS-DP interface is selected using connection CTS.
The function block only enters a communications error for errors, which
are detected during initialization. A communications error cannot be
acknowledged and this function block is only used for diagnostics. This
means, that in normal operation, a communications error is not entered.
Only the cause of the error is signaled at output YTS.
OK BO ― Diagnostics valid
DG1 DW ― Slave diagnostics; bits 0 to 31
DG2 DW ― Slave diagnostics; bits 32 to 63
DG3 DW ― Slave diagnostics; bits 64 to 95
DG4 DW ― Slave diagnostics; bits 96 to 127
DL1 DW ― Data transfer list; bits 0 to 31
DL2 DW ― Data transfer list; bits 32 to 63
DL3 DW ― Data transfer list; bits 64 to 95
DL4 DW ― Data transfer list; bits 96 to 127
MST BY ― Master status
ID W ― Identification number
QTS BO ― Block status
YTS W ― Status display
Communication blocks
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