3.4 COM2 serial port connection
The terminal has second serial port, which can be configured for RS232,
RS422 or RS485 data transmission standards. The serial port (COM2)
has a 9-pin female connector (see point 3 Figure 3.1 on page 1-17 ).
3.4.1 Connection of COM2 in RS232 configuration
For the connection of external devices, refer to the pinout diagram in
Figure 3.5 on page 1-23 :
Key
NC = Reserved - do not connect
RX232 = Data reception
TX232 = Data transmission
GND = Signal ground
Ri = Termination resistance
inside terminal
NOTE: the free pins are
reserved for RS422 - RS485
connection
Figure 3.5 - COM2 serial port connector (9-pin female D-type)
(log0004.gif)
CAUTION
The RS232 operating limits are indicated in par. 3.3 on page
1-22 .
D410
1-23
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