Operation of the DP/PA Link and the Y Link
8-9
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
8.5 Identification data
Identification data is the information that is stored in a module and that supports
the user in the following tasks:
Eliminating errors in a system
Checking the system configuration
Locating hardware changes in a system
The identification data can be used to positively identify modules online.
Reading the identification data
You can access the identification data via “Read record”. The data is accessed in
two steps:
1. A directory stored in record 248 lists the record numbers corresponding to the
various indexes.
2. Part of the identification data is found under the respective index.
The identification data is assigned to the indexes as specified in Table 8-6.
In non-redundant operation, STEP 7 provides a convenient means of reading
identification data.
Table 8-6 Identification data
Identification data
Access Default setting Explanation
Index 1 (record 234)
Manufacturer Read
(2 bytes)
2A hex (= 42 dec) The name of the manufacturer is
stored here.
(42 dec = Siemens AG)
Device name Read
(20 bytes)
6ES7 157-0AA82-0XA0 Module order number
Device serial number Read
(16 bytes)
Depends on product
release
The module serial number is stored
here. This allows positive identification
of the module.
Hardware version Read
(2 bytes)
Provides information on the product
release of the module. Is incremented if
the product release and/or the firmware
of the module changes.
Software version Read
(4 bytes)
Provides information on the firmware
version of the module. If the firmware
version is increment, the product
release (hardware version) of the
module also increases.
Statistical
version no..
Read
(2 bytes)
– Provides information on parameterized
changes on the module. The statistical
version no. is incremented after each
change.
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