Hardware Information
7-10
SIMATIC Rack PC 840 Manual
A5E00104826-03
COM 1 Serial Port, X30*
The serial port (COM 1) on the Rack PC has the following pinout:
1
13
14
25
Figure 7-1 COM 1 Serial Port (Socket Connector)
Pin No.
Designation
Description
Input /Output
1
-
Shield
-
2
TxD (D1)
Serial transmit data
Output
3
RxD (D2)
Serial receive data
Input
4
RTS (S2)
Request to send
Output
5
CTS (M2)
Clear to send
Input
6
DSR (M1)
Data set ready
Input
7
GND (E2)
Functional ground
(reference potential)
-
8
DCD (M5)
Data carrier detect
Input
9
+TTY RxD
TTY receive
Input
10 - 17
-
Unassigned
-
18
+TTY TxD
TTY send
Output
19
+20mA
Isolated current source
-
20
DTR (S1)
Data terminal ready
Output
21
-TTY TxD
TTY send
Output
22
RI (M3)
Incoming call
Input
23-25
-
Unassigned
-
*
The line current (TTY) is an optional product feature.
Содержание SIMATIC Box PC 840
Страница 8: ...Preface viii SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Страница 179: ...B 1 SIMATIC Rack PC 840 Manual A5E00104826 03 Technical Specifications B ...
Страница 208: ...Glossary Glossary 22 SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Страница 212: ...Index Index 4 SIMATIC Rack PC 840 Manual A5E00104826 03 ...