Technical data

Table Of Contents
System Status Lists (SSL)
System Software for S7-300/400 System and Standard Functions - Volume 2/2
33-4
A5E00739858-01
33.3 SSL-ID
SSL-ID
Every partial system status list has a number. You can output a complete partial list
or an extract from it. The possible partial list extracts are predefined and are
identified by a number. The SSL-ID consists of the number of the partial list, the
number of the partial list extract, and the module class.
Structure
The SSL-ID is one word long. The meaning of the bits in the SSL-ID is as follows:
1215 811 7 0
Module class
Number of the
partial list
extract
Number of the
partial list
Structure of the SCL_ID
Module Class
Examples of module classes:
Module Class Coding (Binary)
CPU 0000
IM 0100
FM 1000
CP 1100
Number of the Partial List Extract
The number of the partial list extracts and their meaning depend on the particular
system status list to which they belong. With the number of the partial list extract,
you specify which subset of a partial list you want to read.
Number of the Partial List
Using the number of the partial list, you specify which partial list of the system
status list you want to read.