With CPU 315-2DP (MLFB: 6ES7 315-2AG10-0AB0) I can set the protocol
only to "DPV1". In the ET200X there then appears another
diagnostics address. What is displayed at this address?
With the DPV1 standard a difference is made between the actual
station and the header module for that station. Both components
receive their own diagnostics address.
With the additional diagnostics address you can, for example,
evaluate interrupts that only initiate from the interfacing (e.g.
BM 141). This is also the case with other DPV1 slaves (such as the
IM153-2 for the ET200M).
Likewise diagnostics is stored via the address if there is a module
plugged into the system which cannot store its own diagnostics
messages. If a problem is detected in this module, then diagnostics
is reported for this module by the header via this address.
Fig. 1: ET200X with DPV1 protocol
See Entry ID 7027576 for more information concerning this
topic and about the transfer from EN50170 to DPV1.
The diagnostics address is not displayed if the station has been
configured via a GSD file.