Systech Corporation RCS/5000, Hardware Manual

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Connecting EIA-232 Devices 14
pin 1
Figure 2-10 RJ-45 to RJ-45 Crossover Cable
RCS/6000
The RCS/6000 port server uses an EIA-232 data terminal equipment (DTE) pinout on the
DB-9 serial ports. Table 2-2 lists the pinouts of the DB-9 ports used for EIA-232 serial
communications.
DB-9
Pin
Number
RS-232
Name
Direction Signal Function
1 DCD I Signals module that remote device has a valid
connection
2 RX I Serial data in, from remote device to RCS
3 TX O Serial data out, from RCS to remote device
4 DTR O Signals remote device that RCS is attached and
powered on
5 GND Signal ground
6 DSR I Signals module that remote device is attached and
powered on
7 RTS O Flow control, to enable remote device to send data
8 CTS I Flow control, to enable RCS to send data on TX
9 RI I Ring Indicator
Table 2-2 EIA-232 DB-9 Pinouts