Hardware Information
7-11
SIMATIC Rack PC 840 Manual
A5E00104826-03
Adapter for COM1
You can convert the COM1 port of the SIMATIC PC family into the usual 25 pin
male connector by means of the enclosed adapter (25 pin / 25 pin). For this, you
only have to plug the adapter onto the COM1 socket and secure it with the two
hexagon head screws.
The V24 and TTY interfaces for COM1 can be alternately used.
COM 2 Serial Port (V24/Mouse), X31
The serial port (COM 2) on the Rack PC has the following pinout:
1
5
6
9
Figure 7-2 COM 2 Serial Port (Connector)
Pin No.
Designation
Description
Input / Output
1
DCD (M5)
Receiving signal level
carrier
Input
2
RxD (D2)
Received data
Input
3
TxD (D1)
Transmitted data
Output
4
DTR (S1)
Terminal ready
Output
5
GND (E2)
Functional ground
(reference potential)
-
6
DSR (M1)
Readiness for operation
Input
7
RTS (S2)
Switch on transmitter
Output
8
CTS (M2)
Ready to transmit status
Input
9
RI (M3)
Incoming call
Input
Summary of Contents for SIMATIC Box PC 840
Page 8: ...Preface viii SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Page 179: ...B 1 SIMATIC Rack PC 840 Manual A5E00104826 03 Technical Specifications B ...
Page 208: ...Glossary Glossary 22 SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Page 212: ...Index Index 4 SIMATIC Rack PC 840 Manual A5E00104826 03 ...