Technical data

Table Of Contents
System Status Lists (SSL)
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
33-67
33.34 SSL-ID W#16#00B4 - Diagnostic Data of a DP Slave
Purpose
If you read the partial list SSL-ID W#16#00B4, you obtain the diagnostic data of a
DP slave. This diagnostic data is structured in compliance with EN 50 170
Volume 2, PROFIBUS. You select the module using the diagnostic address you
configured.
Header
The header of partial list SSL-ID W#16#00B4 is structured as follows:
Contents Meaning
SSL-ID W#16#00B4
INDEX Configured diagnostic address of the DP slave
LENTHDR Length of a data record. The maximum length is 240 bytes. For standard
slaves which have a diagnostic data length of more than 240 bytes up to a
maximum of 244 bytes, the first 240 bytes are read and the overflow bit is set
in the data.
N_DR 1
Data Record
A data record of partial list SSL-ID W#16#00B4 has the following structure:
Name Length Meaning
status1 1 byte Station status1
status2 1 byte Station status2
status3 1 byte Station status3
stat_nr 1 byte Master station number
ken_hi 1 byte Vendor ID (high byte)
ken_lo 1 byte Vendor ID (low byte)
.... .... Further diagnostic data specific to the particular slave
Information on Multicomputing (only S7-400)
All the partial lists only supply information on the modules which are assigned to a
CPU. In multicomputing mode you must therefore sample all the CPUs in order to
obtain the data of all the connected modules.