24
Interface description
Purpose of the connectors/connections
Use and operation
In order to control the Terminal and transfer
data, the customer application (e.g. host
computer) is connected via the RS232 cable.
Signal
name
PIN I/O Description Parameters
DCD 1OThe functions
correspond to those
of a serial interface
on the basis of a
V.24 protocol.
active high >5V
low <–5V
RXD 2Ological 1=low <–5V
logical 0=high >+5V
TXD 3Iactive high >2.4V
low <1.8V
DTR 4Iactive high >2.4V
low <1.8V
GND 50V
DSR 6Oactive high >5V
low <–5V
RTS 7Iactive high >2.4V
low <1.8V
CTS 8Oactive high >5V
low <–5V
RI 9Oactive high >5V
low <–5V