Bosch IO-BOX32 Manual page 32

5–6
Configuring
Cyclical useful data interchange
The DP configurator can be used to set the following I/O configurations:
Module
32DI/32DO
32DI, 8Diag/32DO, 8Dummy
32DI, 8Diag/32DO
If the parameters for the IO-BOX32-DP have been set and configured
without errors, the input and output data is transferred in cycles via
PROFIBUS to the PLC.
The following operating modes can be enabled by the DP master during the
cyclical useful data interchange:
D SYNC mode
The IO-BOX32-DP works in the SYNC mode when it receives a SYNC
command from the DP master. This freezes the outputs in the current
state. In the subsequent useful data transmission, the output data is
stored, but the output states remain unchanged. It is only when the next
SYNC command has been received that the saved output data is
switched through to the outputs. An UNSYNC command of the
DP master terminates the SYNC mode. This enables synchronisation of
the outputs of several DP slaves.
D Freeze mode
The IO-BOX32-DP works in the Freeze mode when it receives a Freeze
command from the DP master. This freezes the states of inputs in the
current state. The input data is only updated again when the DP master
has sent the next Freeze command. An Unfreeze command terminates
the Freeze mode. This enables synchronisation of the inputs of several
DP slaves.
D "Fail_Safe" mode
The IO-BOX32-DP supports the den "Fail_Safe" mode of the
PROFIBUS-DP standard. As long as the DP master keeps "Fail_Safe"
active, all the outputs of the bus connection are in a safe state ('0').
D Diagnosis
Insofar as the diagnosis messages have been enabled, diagnosis
information that arises is delivered to the DP master.
Inputs (bytes) Outputs (bytes)
4 4
4 +1 diagnosis byte 4 +1 blank byte
4 +1 diagnosis byte 4
1070 072 302-101 (01.06) GB