CP 243-1
Operating Instructions, 03/2012, C79000-G8976-C244-02
125
Access from and to the S7-200
A
Explanation of the symbols
The following tables summarize the access options from S7-300/400 to the S7-200 and from
the CP 234-1 to devices of the S7-200/300/400.
The symbols used in the tables have the following meaning:
Characte
r
Meaning
√ Is supported.
- Is not generally supported.
X Not possible if CPU with this firmware version is used.
RO Read-only access (read only).
A.1 Access from S7-300/400 to S7-200
Supported access by S7-300/400 clients to S7-200 using STEP 7
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 *
)
√ √ √
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