Siemens SIMATIC NET CP 243-2, Manual

Page: 44 / 150

Interface to the User Program in the S7-200 CPU
2-18
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
2.5.1 Analog Input Area
Assignment of the Input Areas
The input area of the analog module of the CP 243-2 is mapped to the analog
inputs of the user program using bank selection as shown below:
Binary inputs
slave 1 to 31 or
slave 1A to 31A
Memory
assignment
Bank 0
S7-200 CPU CP 243-2
reserved
BS5...BS0
Bank 1
Bank 2
Bank 30
Bank 15
Bank 16
Bank select bits
⋅
⋅⋅
Analog inputs
Binary inputs
slave 1B to 31B
Analog inputs
slave 1 to 31
reserved
Bank 31
Bank 32
Bank 47
Bank 48
*) The address area depends on
the slot of the CP 243-2 (see
Section 2.2)
8 AIW
e.g. AIW0..AIW14
*)
⋅⋅
⋅⋅
Bank 63
⋅⋅
⋅⋅
Response data
AS-i diagnostics
(Delta list)
Figure 2-4
The bank select bits are set in the control byte of the digital module by the user
program (see Section 2.3.4).
Bank 0: Binary input data of the AS-i slaves 1 to 31 or 1A to 31A
With this analog input words, you can access the binary inputs of the standard
slaves or A slaves (slaves with extended addressing mode).
The structure of the input data is described in Section 3.1.