FSM4000 ELECTROMAGNETIC FLOWMETER | OI/FSM4000-EN REV. E 51
Behavior with power supply powered-up
After the power supply has been powered-up, DIP switch 8 is
polled:
The address defined by DIP switches 1
to 7 applies. The address
can no longer be changed via the bus once the device is in
operation, since DIP switch 8 is polled only once when the power
supply is powered
-up.
The transmitter uses the address stored in the FRAM of the
gateway. Upon shipment the address is set to 126 or to the
address specified by the customer.
Once the unit is in operation, the address can be changed via the
bus or directly on the unit using th
e keys on the display board.
The unit must be connected to the bus.
Unit behavior after replacing transmitter electronics
If the transmitter is located at the bus end and if the bus
termination is activated via both hook switches, the bus
termination is canceled when the transmitter plug-in unit is
removed. The bus is no longer terminated properly. To ensure
proper operation, the bus termination must be connected at
another location. If the transmitter plug-in unit is reinstalled, the
old bus termination can be used again.
Note
The factory default for the selector is ID no. 0x078C hex. The
following ID numbers can also be selected: 0x9700 or 0x9740.
Information on voltage/current consumption
The mean current consumption of the device is 10 mA. The
voltage on the bus line must lie in the range of 9 to 32 V DC
Note
The upper limit of the current is electronically limited. In the
event of an error, the FDEfunction (Fault Disconnection
Electronic) integrated in the device makes sure that the current
consumption cannot exceed a maximum of 13 mA.
System integration
Use of PROFIBUS PA profile B, B3.0 ensures interoperability and
interchangeability of units. Interoperability means that devices
from different manufacturers can be physically connected to a
bus and are communication-ready. In addition, third-party
devices can be interchanged without having to reconfigure the
process control system.
To support interchangeability, ABB provides three different GSD
files (equipment master data) that can be integrated in the
system.
Users decide at system integration whether to install the full
range of functions or only part.
Note
Units are interchanged using the parameter ID number selector,
which can only be modified on an acyclical basis.
The following table describes the available GSD files:
Number and type of function blocks
x AI; 1 x TOT
x AI; 2 x TOT; and all manufacturer-
The manufacturer-specific GSD file “ABB_078B” is available to
download from the ABB website http://www.abb.com/flow.
The standard GSD files PA1397xx.gsd are available for download
from the Profibus International homepage:
http://www.profibus.com
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