Siemens CP 243-2 - Manual (Page 38)

Interface to the User Program in the S7-200 CPU
2-12
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
2.4 Meaning of the Data in the Analog Module
Overview
The analog module of the CP 243-2 consists of four areas:
S
Identification register, 8 bits (I/O module identifier)
S Error register, 8 bits
S 8 analog input words (8 AI)
S 8 analog output words (8 AO)
The most important functions handled via these areas are shown in the diagram
below:
CP 243-2
User program Digital module
(8DI/8DO)
S7-200 CPU
НН
НН
НН
НН
НН
ОО
ОО
ОО
ОО
ОО
AS-i master
AS-i cable
Analog module (8AI/8AO)
S
Binary input/output data of the AS-i slaves
S
Analog input/output data of the
AS-i slaves
S
AS-i diagnostic information (delta list)
S
AS-i commands and response data
Figure 2-3