Siemens SIMATIC S7-1200 - Page 1346

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15.14 Downloading in RUN mode
S7-1200 Programmable controller
1346 System Manual, V4.2, 09/2016, A5E02486680-AK
Instructions that might fail due to "Download in RUN mode"
The following instructions might experience a temporary error when download in run
changes are being activated in the CPU. The error occurs when the instruction is initiated
while the CPU is preparing to activate the downloaded changes. During this time, the CPU
suspends initiation of user-program access to the Load Memory, while it completes in-
progress user-program access to Load Memory. This is done so that downloaded changes
can be activated consistently.
Instruction
Response while Activation is Pending
DataLogCreate
STATUS = W#16#80C0, ERROR = TRUE
DataLogOpen STATUS = W#16#80C0, ERROR = TRUE
DataLogWrite
STATUS = W#16#80C0, ERROR = TRUE
DataLogClose
STATUS = W#16#80C0, ERROR = TRUE
DataLogNewFile
STATUS = W#16#80C0, ERROR = TRUE
DataLogClear
STATUS = W#16#80C0, ERROR = TRUE
DataLogDelete
STATUS = W#16#80C0, ERROR = TRUE
READ_DBL
RET_VAL = W#16#82C0
WRIT_DBL
RET_VAL = W#16#82C0
Create_DB
RET_VAL = W#16#80C0
Delete_DB
RET_VAL = W#16#80C0
RTM
RET_VAL = 0x80C0
In all cases the RLO output from the instruction will be false when the error occurs. The error
is temporary. If it occurs, the instruction should be retried later.
Note
You must not retry the operation in the c
urrent execution of the OB.