Wago 750-333 PROFIBUS DP/V1 FIELD BUSCOUPLER 12 MBaud 750-333 Datenbogen

94  •

2001-02-27

Before a data exchange can be performed between master and slave, a param-
eterisation is required in addition to configuration.

The extended parameters (Extended User_Prm_Data) are provided via the
GSD files as selectable text in the configuration programs.

Restart the internal bus after a
fault

Restart of the terminal bus following a fault,
such as, for example, no termination module

POWER ON RESET

*)

following an interruption of the supply

AUTORESET

immediately after overcoming the internal bus
fault

I/O module diagnosis

The diagnosis information of all I/O modules
with a diagnosis capability, for which the
diagnosis 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“

Behaviour 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 transmis-
sion

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 value

*)

all outputs switch a parameterisable 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 fieldbus controller and
I/O modules, such as, for example no termina-
tion 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

Default settings