Siemens SIMATIC S5 Manual page 20

2 Engineering
DB 113 (ComFetchDB)
DW0
DW1
DB 114 (ComWriteDB)
DW0
DW1
Note The data blocks for FETCH (ComFetchDB) and WRITE (ComWriteDB) access
operations must not be configured to "Optimized block access" in the S7-1500.
(Properties of the data block under Options > "Attributes").
Ethernet Communication (ISO on TCP) between SIMATIC S5 and
SIMATIC S7-1500 Controllers
Entry-ID: 109482475, V1.2,
:= "A1A1"
deletion identifier or
:= "1234"
data identifier
:= "0235"
current count value
:= "A1A1"
deletion identifier or
:= "1234"
data identifier
:= "0234"
current count value
07/2019
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