General
16
F-FEM-DDC — User’s Guide
2.3 Cascading
The F-FEM-DDC is part of a family of Front End Modules that operate together
in a network. An interface up to 400 MBaud IEEE1394 is used to connect them
for data transmission. The other members of this group are:
Because it has an RS485 interface, the FEM-P is an exception in this group. It is
therefore operated as a submodule of a F-FEM-AIS, -CAIS, -AIN, -CAIN. The
F-FEM-DIO is connected via a serial interface at F-FEMs of other types
(F-FEM-CON, -DAC, -CNT).
Several F-FEMs can be connected with the IEEE1394 interface to a bus. The
restrictions on the number of nodes, total sampling rate and number of channels
are dependent on the licence and version of the PUMA Open Software.
You will find further information in the corresponding F-FEM parameterizing
manual.
F-FEM-CON Controller with analog and digital input and
output, Counter outputs, frequency outputs
F-FEM-DAC for analog output
F-FEM-CNT for Counter input
F-FEM-AIF for analog measurements,
with bayonet locking
F-FEM-AIN for analog measurements without galv.
isolation, with bayonet locking
F-FEM-CAIS for analog measurements with galv. isola-
tion, with screw-type locking
F-FEM-CAIN for analog measurements without galv.
isolation, with screw-type locking
F-FEM-AIT for temperature measurements without galv.
isolation, with screw-type locking, reduced
accuracy and sampling rate
BASIS-FEM-AIN for analog measurements without galv.
isolation, with bayonet locking
BASIS-FEM-CON Controller with analog and digital input and
output, Counter outputs, frequency outputs
with reduced accuracy and sample rate
F-FEM-DIO for digital input and output
FEM-P for measuring pressure
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