Siemens TC35 User Manual page 25

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 > 5 V
low < –5 V
logical 1 = low < –5 V
logical 0 = high > +5 V
active high > 2.4 V
low < 1.8 V
active high > 2.4 V
low < 1.8 V
0 V
active high > 5V
low < –5 V
active high > 2.4 V
low < 1.8 V
active high > 5 V
low < –5 V
active high > 5 V
low < –5 V