The MM-42 is used for conversion between RS-422/485 and RS-232/V.24 signals. This device is often used in multidrop applications.
In 2-wire half duplex transmission (RS-485) the direction of the bus is controlled by handshaking signals. Transmission rates up to 115.2 kbit/s are possible and the unit meets the RS-422/485 standard allowing up to 32 nodes over a total distance of 1 200 metres. The unit can be supplied with either a 9 or 25 way connection cable.
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Conversion between RS-232/V.24 and RS-422/485 signals |
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Suitable for 2- and 4 wire systems |
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DIP switch selectable fail-safe and termination circuit |
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Total galvanic isolation |
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Protects connected units from lightning/ transients |
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Completely data transparent |
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Bus state controlled by RTS |
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Use to connect equipment on different earth potentials |
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Guarantees reliable long-distance communication |
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