Chapter 2 – Installation
Multi-Tech Systems, Inc. Serial-to-Ethernet Device Server User Guide (S000344E) 11
Pin Functions of the Female End Connector
The following tables explain the pin functions.
External Power Powered
Through Pin 6
Signal IN/OUT Signal IN/OUT
Pin 1 CD O Pin 1 CD O
Pin 2 TX O Pin 2 TX O
Pin 3 RX I Pin 3 RX I
Pin 4 DTR I Pin 4 DTR I
Pin 5 GND -- Pin 5 GND --
Pin 6 DSR O Pin 6* Power
Pin 7 CTS I Pin 7 CTS I
Pin 8 RTS O Pin 8 RTS O
Pin 9 RI O
Multi-Tech
MultiConnect
Female Connector
Pin 9 RI O
*Pin 6 Input Power Consumption
@ 5V DC: Typical 190mA Maximum 245mA
@ 10V DC: Typical 100mA Maximum 120mA
@ 15V DC: Typical 69mA Maximum 83mA
@ 20V DC: Typical 54mA Maximum 65mA
@ 25V DC: Typical 45mA Maximum 55mA
Warning:
When supplying power to the RS-232 connector, make sure the power
does not feed the DTE device.
Pin Functions of the Male End
The following table explains the pin functions.
RS-232
Signal IN/OUT
Pin 1 CD I
Pin 2 RX I
Pin 3 TX O
Pin 4 DTR O
Pin 5 GND -
Pin 6 DSR I
Pin 7 RTS O
Pin 8 CTS I
Pin 9 RI
I
Multi-Tech
Male Connector
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