Error module: If the pump loses its connection to the BUS
module (as soon as the BUS module is removed or if communica‐
tion between the BUS module and pump is interrupted for other
reasons, for example), the error symbol and the symbol
appear.
3.3.3
LEDs on the PROFIBUS
®
module
Signal Cause
Off The module has no supply voltage or connection.
Green The module and the master are exchanging informa‐
tion.
Green flashing The module has been initialised.
Red flashing Error in pump parametrisation
Red flashing, double Error in PROFIBUS configuration
Signal Cause
Off The module has not been initialised.
Green The module has been initialised.
Green flashing The module has been initialised and there are diag‐
nostic messages.
Red Serious exception error
3.3.4 Using the metering monitor
The "Metering monitor" socket must be assigned to use the
metering monitor in PROFIBUS
®
operation. The pump then trans‐
mits
‘available’
for the "Flow" status bit. The metering monitor can
be switched on and off using the PROFIBUS
®
using the
‘Metering
monitor’
and
‘FlowControl’
parameters.
If the metering monitor is set to
‘Active’
, DFXa reports a problem
as a warning or error.
3.4 Installation
All devices that are members of the bus system must be connected
in a line. Up to 32 stations are possible (master, slaves, repeaters).
At both the beginning and end of the cable, the bus must be termi‐
nated with a terminating resistor.
Use a screened, twisted-pair cable in conformity with EN 50170
(cable type A) for the PROFIBUS
®
cable.
LED 1 (left) - module operating status
LED 2 (right) - module status
Bus installation
Plugs and cables
Supplementary operating instructions for PROFIBUS
®
49
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