1MRS 750107-MUM
Serial LonTalk
Adapter
Technical Reference Manual
SLTA Option Card
ABB Automation
7
There is also a LED for the RS232 receiver. This LED flashes when a message is
received.
3.3.
Fibre-optic interface
The SLTA option card is equipped with a single fibre-optic transceiver pair. This
fibre-optic pair can be from a choice of two different types of fibre-optic interfaces.
These are not interchangeable and are defined by the user in the order. For ordering
information, please see chapter 9.
The SLTA option card also contains a LED for the fibre-optic receiver. This LED
flashes when a message is received.
The fibre-optic interface in the SLTA option card has a built-in support for collision
detection.
The speed of the fibre-optic channel is 1.25 Mbit/s only.
3.4.
LTS-20 core module
The Echelon LTS-20 core module contains the core electronics and firmware
required to implement an SLTA.
In addition, the LTS-20 core module contains parameters required for the
communication to the L
ON
W
ORKS
network (address information, etc.).
