Siemens S5-135U/155U User Manual
Page 240
5-100
System Manual
C79000-G8576-C199-06
A maximum of 19200 bps is permissible for data transmission with the V.24
submodule.
The following table shows the pin assignments of the 25-pin subminiature
D-type connector in the front plate of the V.24 submodule:
Pin
Des. to
DIN
66020
Des. to
CCITT
V.24
Int. Abbre-
viation
Input/
Output
Remarks
25
13
1
Shield
25
2
D1
103
TxD
Output
3
D2
104
RxD
Input
4
S2
105
RTS
Output
5
M2
106
CTS
Input
6
M1
107
DSR
Input
7
E2
102
GND
8
M5
109
DCD
Input
18
PS3
141
Output
Not supported
14
1
20
S1.2
108.2
DTR
Output
1
22
M2
125
RI
Input
23
S4
111
Output
25
PM1
142
Input
Not supported
The signal numbering complies with DIN 66020 (V.24/RS 232C); the signal
designations are the abbreviations used internationally (RS 232C).
Data Transmission
Rate
Pin Assignments
of the V.24
Submodule
CPUs, Memory Cards, Memory Submodules, Interface Submodules