Diagnostics
4.3 Diagnostics with the diagnostic repeater
PROFIBUS with STEP 7 V13
60
Function Manual, 12/2014, A5E03775446-AC
4.3
Diagnostics with the diagnostic repeater
Introduction
The diagnostic repeater is a repeater that can monitor two segments of a RS485-PROFIBUS
subnet (copper cable) during operation and signal cable faults to the DP master by sending a
diagnostic frame. Fault location and the cause of the fault can be displayed in plain text by
means of STEP 7 as well as operator control and monitoring devices (SIMATIC HMI).
With its cable diagnostics during operation, the diagnostic repeater allows you to detect and
localize cable faults early on. This means plant faults are detected early and plant downtimes
can be prevented.
Diagnostic functions
●
The diagnostic function provides the location and the cause of cable faults, such as wire
break or missing terminating resistors. The fault location is specified relative to the
devices present, for example "Break on signal line A and/or B".
●
Reading out the saved diagnostic and statistical information.
●
Monitoring of the isochronous PROFIBUS, e.g., violation of cycle time.
●
Providing identification data.
Additional information
Additional information on diagnostics with STEP 7 and for reading out the diagnostics with
the user program is available in the Diagnostic repeater for PROFIBUS DP
http://support.automation.siemens.com/WW/view/en/7915183
) manual.
Summary of Contents for SIMATIC ET 200AL
Page 2: ......
Page 143: ......
Page 218: ......
Page 250: ......
Page 296: ......
Page 337: ......
Page 365: ......
Page 392: ......
Page 419: ......
Page 451: ......
Page 483: ......
Page 597: ......
Page 648: ......
Page 702: ......
Page 739: ......
Page 781: ......
Page 804: ......
Page 828: ......
Page 853: ......
Page 880: ......
Page 906: ......
Page 996: ...Diagnostics ...
Page 1121: ......
Page 1565: ......