Technical data

Table Of Contents
System Status Lists (SSL)
System Software for S7-300/400 System and Standard Functions - Volume 2/2
33-10
A5E00739858-01
33.7 SSL-ID W#16#xy13 - Memory Areas
Purpose
If you read the partial list with SSL-ID W#16#xy13, you obtain information about the
memory areas of the module.
Header
The header of partial list SSL-ID W#16#xy13 is structured as follows:
Contents Meaning
SSL-ID The SSL-ID of the partial list extract
W#16#0113: data record for one memory area
You specify the memory area with the INDEX parameter.
INDEX Specifies a memory area (only with SSL-ID W#16#0113)
W#16#0001: work memory
LENTHDR W#16#0024: one data record is 18 words long (36 bytes)
N_DR Number of data records
Data Record
A data record of partial list SSL-ID W#16#xy13 has the following structure:
Name Length Meaning
Index 1 word Index of a memory area
W#16#0001: work memory
Code 1 word Memory type:
W#16#0001: volatile memory (RAM)
W#16#0002: non-volatile memory (FEPROM)
W#16#0003: mixed memory (RAM + FEPROM)
Size 2 words Total size of the selected memory (total of area 1 and area 2)
Mode 1 word Logical mode of the memory
Bit 0: volatile memory area
Bit 1: non-volatile memory area
Bit 2: mixed memory area
For work memory:
Bit 3: code and data separate
Bit 4: code and data together
Granu 1 word Always has the value 0
Ber1 2 words Size of the volatile memory area in bytes.
Belegt1 2 words Size of the volatile memory area being used
Block1 2 words Largest free block in the volatile memory area
If 0: no information available or cannot be ascertained.
Ber2 2 words Size of the non-volatile memory area in bytes
Belegt2 2 words Size of the non-volatile memory area being used
Block2 2 words Largest free block in the non-volatile memory area
If 0: no information available or cannot be ascertained.