System Status Lists For Profinet Io - Siemens SIMATIC S7-400 Manual

PROFINET

6.5 System status lists for PROFINET IO

Detailed Information
For detailed descriptions of the individual blocks, refer to the manual
S7-300/400 System and Standard Functions
6.5 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 out, 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 6-4 Comparison of the System Status Lists of PROFINET IO and PROFIBUS DP
SSL-ID PROFINET IO
W#16#0591 Yes
Parameter adr1 changed
W#16#0C91 Yes
Parameter adr1/adr2 and
set/actual type identifier
changed
6-8
.
PROFIBUS DP
Yes
Yes
System Software for
Applicability
Module status information for the
interfaces of a module
Module status information of a module in
a central configuration or attached to an
integrated DP or PN interface, or an
external DP interface using the logical
address of the module.
S7-400 Automation System, CPU Specifications
Manual, 10/2006, 6ES7498-8AA04-8BA0