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Gender Changer for COM1
You can convert the COM1/V24 / PLC port of the SIMATIC PC family into the
usual 25 pin male connector by means of the enclosed gender changer (25 pin / 25
pin). For this, you only have to plug the gender changer 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 SIMATIC Box PC 840 has the following pinout:
Figure 7-2 COM 2 Serial Port (Connector)
Pin No.
1
2
3
4
5
6
7
8
9
SIMATIC Box PC 840 Manual
A5E00085984-04
5
9
6
1
Designation
Description
DCD (M5)
Receiving signal level
carrier
RxD (D2)
Received data
TxD (D1)
Transmitted data
DTR (S1)
Terminal ready
GND (E2)
Functional ground
(reference potential)
DSR (M1)
Readiness for operation
RTS (S2)
Switch on transmitter
CTS (M2)
Ready to transmit status
RI (M3)
Incoming call
Hardware Information
Input / Output
Input
Input
Output
Output
-
Input
Output
Input
Input
7-11
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