Technical data

Table Of Contents
System Status Lists (SSL)
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
33-17
Data Record
A data record of the partial list with SSL-ID W#16#xy1C has the following structure:
INDEX = W#16#0001
Name Length Meaning
Index 1 word For a standard CPU and the partial list extract W#16#011C: component
ID: W#16#0001
For H CPUs and the partial list extracts W#16#021C and W#16#031C:
Byte 0: bits 0 to 2: rack no.; bit 3: 0 = reserve CPU, 1 = master CPU; bits 4
to 7: 1111
Byte 1: component ID: B#16#01
Name 12 words Name of the PLC
(max. 24 characters; when using shorter names, the gaps are filled with
B#16#00)
Res 4 words Reserved
INDEX = W#16#0002
Name Length Meaning
Index 1 word For a standard CPU and the partial list extract W#16#011C: component
ID: W#16#0002
For H CPUs and the partial list extracts W#16#021C and W#16#031C:
Byte 0: bits 0 to 2: rack no.; bit 3: 0 = reserve CPU, 1 = master CPU;
bits 4 to 7: 1111
Byte 1: component ID: B#16#02
Name 12 words Name of the module
(max. 24 characters; when using shorter names, the gaps are filled with
B#16#00)
Res 4 words Reserved
INDEX = W#16#0003
Name Length Meaning
Index 1 word For a standard CPU and the partial list extract W#16#011C: component
ID: W#16#0003
For H CPUs and the partial list extracts W#16#021C and W#16#031C:
Byte 0: bits 0 to 2: rack no.; bit 3: 0 = reserve CPU, 1 = master CPU;
bits 4 to 7: 1111
Byte 1: component ID: B#16#03
Tag 16 words Plant identification of the module
(max. 32 characters; when using a shorter plant identification the gaps are
filled with B#16#00)