Siemens CP 243-1 - Page 128

Access from and to the S7-200
A.2 Access by CP 243-1 to S7-200/300/400
CP 243-1
128 Operating Instructions, 03/2012, C79000-G8976-C244-02
S7-200 with CPU222, CPU224, CPU 226/XM
Memory areas
INPUT RO RO RO
OUTPUT RO RO RO
BIT MEMORY RO RO RO
DATA BLOCK - - -
VARIABLES RO RO RO
ANALOG INPUT *
)
RO (WORD) RO (WORD) RO (WORD)
SPECIAL MEMORY RO RO RO
*
)
Read access possible only as WORD access.
Supported access to S7-200 using SIMATIC NET OPC
S7-200 with CPU222, CPU224, CPU 226/XM
CPU firmware version 1.2 1.21 >1.21
Data types
BOOL √ √ √
BYTE √ √ √
CHAR X RO √
WORD √ √ √
INT X RO √
DWORD √ √ √
DINT X RO √
REAL X RO √
Memory areas
INPUT √ √ √
OUTPUT √ √ √
BIT MEMORY √ √ √
DATA BLOCK - - -
VARIABLES *
)
√ √ √
ANALOG INPUT - - -
SPECIAL MEMORY - - -
*
)
The access to VBxx should be formulated as DB1.DBBxx (standard STEP 7).