External Interface Specifications (Diagnostic Port); Figure 6- 2 Diagnostic Port Pinout - Webasto SVS100 Installation, Operation And Maintenance Manual

External Interface Specifications (Diagnostic Port)

7
Located on the charger side panel is a 4-pin RS232 connector that will allow devices such as
laptops to monitor the charger activity, data stream and charge history. As soon as the
application software is up and running communications can begin. The diagnostic port is
configured as a DCE device (Data Communications Equipment). Connect directly to a
standard PC RS-232 port (DTE) found on a PC. The port is a DSUB 9 pin female connector.
The serial port pin out is as follows:
Diagnostic
port pin
1
2
3
4
23435-W-03-01
SVS100 Installation, Operation and Maintenance Manual
Signal
Description Characteristics
GND Serial data ground
reference
TXD Serial data transmit
from charger
RXD Serial data receive to
charger

Figure 6- 2 Diagnostic port pinout

48
Signal Signal
Source
Common
Charger
Diagnostic
Webasto Charging Systems, Inc.
Signal
Destination
Common
Diagnostic
tool
Charger
tool