PROFINET
8.4 System status lists for PROFINET IO
S7-400H
System Manual, 03/2012, A5E00267695-11
101
8.4 System status lists for PROFINET IO
Introduction
The CPU makes certain information available and stores this information in the "System
status list".
The system status list describes the current status of the automation system. It provides an
overview of the configuration, the current parameter assignment, the current statuses and
sequences in the CPU, and the assigned modules.
The system status list data can only be read, but not be changed. The system status list is a
virtual list that is compiled only on request.
From a system status list you receive the following information via the PROFINET IO
system:
● System data
● Module status information in the CPU
● Diagnostic data from a module
● Diagnostic buffer
Compatibility of the new system status lists
For PROFINET IO, some new system status lists were created, among other things,
because larger configurations are now possible with PROFINET.
You can also use these new system status lists with PROFIBUS.
You can continue to use a known PROFIBUS system status list that is also supported by
PROFINET. If you use a system status list in PROFINET that PROFINET does not support,
an error code is returned in RET_VAL (8083: Index wrong or not permitted).
Comparison of the system status lists of PROFINET IO and PROFIBUS DP
Table 8- 4 Comparison of the system status lists of PROFINET IO and PROFIBUS DP
SSL-ID PROFINET IO PROFIBUS DP Applicability
W#16#0591 Yes
Parameter adr1 changed
Yes Module status information for the
interfaces of a module
W#16#0C91 Yes, internal interface
Parameter adr1/adr2 and
set/actual type identifier
changed
No, external interface
Yes, internal interface
No, external interface
Module status information of a module in
a central configuration or at an integrated
DP or PROFIBUS interface, or at an
integrated DP interface using the logical
address of the module.
W#16#4C91 No No, internal interface
Yes, external interface
Module status information of a module
attached to an external DP or
PROFIBUS interface using the start
address.
To Next Page
Loading...
