Siemens TC35 Terminal User Manual page 26

Signal PIN I/O
name
DCD 1
RXD 2
TXD 3
DTR 4
GND 5
DSR 6
RTS 7
CTS 8
RI 9
24
Interface description
Purpose of the connectors/connections
Description
O The functions
correspond to those
of a serial interface
O
on the basis of a
V.24 protocol.
I
I
O
I
O
O
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.
Parameters
active high >5V
low <–5V
logical 1=low <–5V
logical 0=high >+5V
active high >2.4V
low <1.8V
active high >2.4V
low <1.8V
0 V
active high >5V
low <–5V
active high >2.4V
low <1.8V
active high >5V
low <–5V
active high >5V
low <–5V