Siemens SIMATIC S5-115U, User Manual

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Communications Capabilities S5-115U Manual
Example of How to Solve an Initiation Conflict
STX (02
H
)
STX (02
H
)
DLE (10
H
)
1st char.
.
.
.
nth char.
DLE (10
H
)
ETX (03
H
)
BCC
DLE (10
H
)
STX (02
H
)
DLE (10
H
)
Transmitter Receiver
CPU 944
with 3964R line
procedure
High priority
Low priority
Initializing the Parameter Set
The parameters required for data interchange are initialized in the parameter set. The location of
the parameter set is specified in system data word 48 (or 48 and 49) (see Table 12-14). Refer to
Table 12-17 for permissible values and defaults.
Note
The default values are used only when the parameter set was not defined or the
parameters could not be interpreted.
12-46
EWA 4NEB 811 6130-02b