Technical data

Table Of Contents
System Status Lists (SSL)
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
33-41
33.23 SSL-ID W#16#xy75 - Switched DP Slaves in the
H System
Purpose
If you read the partial list SSL-ID W#16#xy75, with CPUs of an H system in a
redundant H operating mode, you obtain the status information on the
communication between the H system and the switched DP slaves.
The partial list tells you in which rack the DP master system interface module
currently being used for communication with a DP slave is inserted.
Header
The header of partial list SSL-ID W#16#xy75 is structured as follows:
Contents Meaning
SSL-ID The SSL-ID of the partial list extract
W#16#0C75: Communication status between the H system and a
switched DP slave. You select the DP slave with the INDEX
parameter.
INDEX Diagnostic address of the DP slave interface module(s)
LENTHDR W#16#0010: One data record is 8 words long (16 bytes)
N_DR W#16#0001: Number of data records
Data Record
A data record of partial list ID SSL-ID W#16#xy75 has the following structure:
Name Length Meaning
adr1_bgt0 1 word First address section of the DP slave interface module
whose
DP master interface module is inserted in rack 0:
DP master system ID and station number
adr2_bgt0 1 word Second address section of the DP slave interface module
whose DP master interface module is inserted in rack 0:
Slot and submodule slot
adr1_bgt1 1 word First address section of the DP slave interface module
whose
DP master interface module is inserted in rack 1:
DP master system ID and station number
adr2_bgt1 1 word Second address section of the DP slave interface module
whose DP master interface module is inserted in rack 1:
Slot and submodule slot
Res 2 words Reserved
Logadr 1 word Diagnostic address of the DP slave interface module(s):
Bits 0 to 14: logical base address
Bit 15: I/O identifier (0 = input, 1 = output)