
Programmable Field Bus Controller 750-833 • 85
Parameterization of the Controllers
WAGO-I/O-SYSTEM 750
Bus System
3.7 Parameterization of the Controllers
Before a data exchange can be performed between master and slave, a
parameterization is required in addition to configuration.
The extended parameters (Extended User_Prm_Data) are provided via GSD
files as selectable text in the configuration programs.
Description Value Meaning
Restart the internal bus after a
fault
Restart of the terminal bus following a fault,
such as, for example, no termination module
following
POWER ON RESET
*)
an interruption of the supply
AUTORESET immediately after overcoming the internal bus
fault
I/O module diagnostics The diagnostics information of all I/O modules
with a diagnostics capability, for which the
diagnostics is released are
released
*)
transferred to PROFIBUS DP master
locked not transferred to PROFIBUS DP master
Process value display Word or double word oriented process data, is
transferred to PROFIBUS DP master in:
INTEL „Little Endian Format“
MOTOROLA
*)
„Big Endian Format“
Behavior in case of a
PROFIBUS DP fault
In the case of a malfunction of the
PROFIBUS DP communication the status of the
connected output periphery can be influenced in
various ways:
Stop internal bus
transmission
The process data exchange on the internal bus is
stopped, all outputs drop out after a module
specific monitoring time of 100 ms
Set output image to zero all outputs are immediately reset
Freeze output image all outputs maintain the last status before the
malfunction
Write substitute values
*)
all outputs switch a parameterizable substitute
value
PFC fault strategy PFC takes over the control via the output image
Reaction to an internal bus fault
In the event of a malfunction of an internal
communication between field bus controller and
I/O modules, such as, for example no
termination module,
Stop PROFIBUS data
exchange
*)
the data exchange with the PROFIBUS master is
stopped.
Set input image to zero the input information is set to zero
Freeze input image the input information prevailing before the fault
is maintained
PFC-Mapping of binary I/O
modules
Using binary I/O modules containing redundant
data on the internal data bus side,
Process data and diagnostics
data
*)
all data of the internal data bus image are
mapped in the PFC image
only process data only the relevant data, that are connected to the
periphery (no diagnostics data), are mapped in
the PFC image
Projecting of virtual PFC
modules
When projecting PFC modules using the
PROFIBUS DP configuration tool, the modules
not possible
*)
cannot be parameterized as “not being
connected”
possible can be parameterized as “not being connected”
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