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Dealing with problems / error displays
7.1
Replacing a defective AS-i slave / automatic address programming
7.1.1
Automatic address programming after failure of one or more AS-i slaves (CP with
firmware version V3.1 or higher)
AS-i slave replacement with CP 343-2 (6GK7 343-2AH01-0XA0) and
CP 343-2 P (6GK7 343-2AH11-0XA0), product version 02/firmware version V3.1 or higher
The "Automatic address programming" function makes it particularly easy for you to
replace defective AS-i slaves.
Note
Automatic address programming:
You can use the automatic address programming function only if the CP is operating in
"protected mode" and one or more AS-i slaves have failed.
If several AS-i slaves have failed, the defective slaves must be uniquely identified in the
configuration by their slave profile (I/O configuration, ID code, ID2 code) and ID1 code. The
automatic address programming function does not work if two identical slaves have failed.
The automatic address programming function also supports slaves with the "CTT5" profile
(multi-address slaves) and AS-i devices which contain multiple internal slave addresses. A
precondition for support is that each internal slave is uniquely identified (I/O configuration,
ID code, ID2 code, ID1 code).
Examples of devices with multiple internal slave addresses which support automatic address
programming:
● K60 module with 8DI/2DO (3RK2400-1HQ00-0AA3)
● M200D motor starter AS-i standard (3RK1325- ...).
If no address has yet been assigned to these devices (setting in delivery state), only one
zero address is visible on the bus. The device automatically suppresses the other internal
zero addresses.
CP 343-2/CP 343-2 P AS-Interface Master for SIMATIC S7
Supplement to Operating Manual, 08/2010, A5E03006584020A-01
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