Balluff BTL7-V50D-M Serie Notice D'utilisation page 30

BTL7-V50D-M _ _ _ _ -A/B/Y/Z(8)-C003
Transducer — Rod Style
3
Construction and function (continued)
3.2 Function
The BTL7 transducer contains the waveguide which is
protected by an outer stainless steel tube (rod). A magnet
is moved along the waveguide. This magnet is connected
to the system part whose position is to be determined.
The magnet defines the position to be measured on the
waveguide.
An internally generated INIT pulse interacts with the
magnetic field of the magnet to generate a torsional wave
in the waveguide which propagates at ultrasonic speed.
The component of the torsional wave which arrives at the
end of the waveguide is absorbed in the damping zone to
prevent reflection. The component of the torsional wave
which arrives at the beginning of the waveguide is
converted by a coil into an electrical signal. The travel time
of the wave is used to calculate the position.
This information is transferred via the EtherNet/IP interface.
EtherNet/IP is an industrial bus system based on the
physical layer of the Ethernet (see www.odva.org).
The transducer can detect and process up to 16 magnets.
The maximum number of magnets depends on the
nominal length. The position and velocity of each magnet
can be output.
Implementation is based on the ODVA device profile 22
hex, encoder device.
The following functions are also available:
– Number of magnets can be parameterized. A fixed
number from 1 to 16 or flexible (FMM). In FMM, the
number of magnets corresponds to the number of
magnets detected, with a maximum of 16.
– Setting the resolution of the position and velocity
output
– Reversal of the measuring direction
– Setting presets
– Temperature sensor. Read out current, minimum, and
maximum temperature.
Supported EtherNet/IP functions:
– DHCP
– BOOTP
– ACD
– DLR V2 (ring topology)
– CIP Sync
– Integrated Switch
– Reset Services, Identity Object Service Type 0/1
– UCMM
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