Siemens SIMATIC NET CP 343-2, Руководство пользователя

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1 Technical Description
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CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04
1.9 Addressing the CP 343-2 in the S7 Automation System
The CP 343-2 can be addressed by the PLC like an analog module with 16 input
bytes and 16 output bytes. The CP occupies 16 input bytes and 16 output bytes in
the I/O address space of the S7 automation system (analog area on the AS).
Of the 16 bytes I/O address area of the CP 343-2, 31 x 4 bits are used for the
binary data of the AS-i standard slaves or A slaves. The remaining four bits are
reserved for later applications.
The base address n of this address area is fixed as follows by the slot of the
CP 343-2.
Rack 0
Module PS CPU IM CP CP CP CP CP CP CP CP
Slot number 1 2 3 4 5 6 7 8 9 10 11
Base address 1 2 3 256 272 288 304 320 336 352 368
Rack 1
Module IM CP CP CP CP CP CP CP CP
Slot number 3 4 5 6 7 8 9 10 11
Base address 384 400 416 432 448 464 480 496
Rack 2
Module IM CP CP CP CP CP CP CP CP
Slot number 3 4 5 6 7 8 9 10 11
Base address 512 528 544 560 576 592 608 624
Rack 3
Module IM CP CP CP CP CP CP CP CP
Slot number 3 4 5 6 7 8 9 10 11
Base address 640 656 672 688 704 720 736 752
Note
In most CPUs (for example, the CPU 315-2DP, 318), the slot-oriented addressing
can be modified with STEP 7 configuration (HW Config).
In particular, with the freely configurable CPUs, it is possible to address the
standard AS-i slaves or the A/B slaves with A addresses from the extended
address area via the process image of the inputs and outputs.