Siemens SIMATIC Distributed I/O System DP/ASi Link Manual de servicio Pagina 23

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The AS-i Masters
2-5
SIMATIC NET AS-Interface Introduction and Basic Information
C79000-G8976-C089/03
CP 343-2 (Extended AS-i Master)
The CP 343-2 is an extended AS-i master for S7-300 series controllers and the ET
200 M distributed I/O system.
The CP 343-2 occupies 16 input and 16 output bytes in the analog area of the
controller via which the AS-i standard slaves and AS-i A slaves can be addressed.
AS-i B slaves have an additional I/O area that is accessible using SFCs.
When using an FC, in addition to the I/O data exchange, it is also possible to
execute master calls from within the control program. The FC is supplied on a
diskette along with the manual for the CP 343-2.
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