LS680-DA
Product Description
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Product Description
4.1
LS680-DA - Use and application
The optical data coupler serves as an optical link between two Ethernet devices;
typically one is mobile. The opening angle is optimized for operations in high rack
storage.
With the optical data coupler, devices with industrial Ethernet topologies, such as
PROFINET, Ethernet/IP and other Ethernet protocols, can be connected. The
physical transfer takes place protocol-free with 100 MBit/s full duplex. The
connection to a number of modules must be implemented using switches that
have been certified for use with the bus system in question. All layer 2 telegrams
(IEEE 802.3 Clause 25) are physically transported. There is no saving of
telegrams, so the transfer is not delayed at all.
Modules operating at a data rate of 10 MBit/s can be connected using a switch.
Isochronous real-time systems can also be driven to a certain extent on account
of the variable light propagation time.
The LS680 uses semiconductor lasers as optical transmitters. The dilation of the
light beam and the use of return map blocks guarantee the harmlessness of the
devices in accordance with laser class 1M. The transmitting beam must not be
viewed with telescopes or binoculars from distances of less than 20 m. At longer
distances, the limit values for laser class 1 are not exceeded, even when viewed
through a telescope with a 50 mm aperture.
