Elseta IOMOD HT, Руководство пользователя

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IOMOD HT has integrated 120Ω termination resistor which can be enabled or disabled over USB configuration. It is
recommended to use termination at each end of the RS485 cable. See typical connection diagram on Fig. 5.1.
Fig. 5.1.
IOMOD 8DI8DO has 1/8 Unit load receiver which allows to have up to 256 units on line (compared to standard 32
units). To reduce reflections, keep the stubs (cable distance from main RS485 bus line) as short as possible when
connecting device. Figure 5.2 shows explanation on device connection.
Fig. 5.2
Device connection