Technical data

Table Of Contents
System Status Lists (SSL)
System Software for S7-300/400 System and Standard Functions - Volume 2/2
33-14
A5E00739858-01
33.10 SSL-ID W#16#xy19 - Status of the Module LEDs
Purpose
If you read the partial list with SSL-ID W#16#xy19, you obtain the status of the
module LEDs.
Note
If you want to read out the partial list W#16#16#xy19 for an H CPU, remember that
this is only possible in the non-redundant H operating modes.
Header
The header of partial list W#16#xy19 is structured as follows:
Contents Meaning
SSL-ID The SSL-ID of the partial system status list
W#16#0019 Status of all LEDs
W#16#0119 Status of one LED
LENTHDR W#16#0004: one data record is 2 words long (4 bytes)
N_DR Number of data records