4 Operation
KACO Gerätetechnik GmbH 7 Operator’s Instructions Powador
4.6 The Serial RS232-Interface
By means of an electrically isolated serial interface (2)
the operating data can be transmitted to a computer
(e.g. notebook) and processed individually with any
commercial spreadsheet program. To connect the
inverter to the PC you only need a commercially
available interface cable. The cable length should not
exceed 20 meters.
The inverter data is transmitted via the serial interface
as text only; there is no error check.
Powador Sub-D
male 9-pole
Meaning of
message on
PC
PC Sub-D
female 9-pole
2 TXD 2
3 RXD 3
4 RTS 4
5 GND 5
Table 4-1: Pin allocation of the RS232 Interface
The RS232 interface has the following parameters:
- Baud rate: 9600 Baud
- Data bits: 8
- Parity: None
- Stop bits: 1
- Protocol: None
Figure 4.7 shows an example of a transmission via
RS232 interface.
Data can be transmitted by means of any terminal
emulation
supplied together with all commercially available
operating systems, or by means of the KACOViso
visualization tool.
In connection with the Powador inverter, KACOViso
assumes the function of a data logger. It stores the
inverter data and displays it in different diagram types,
such as daily or monthly displays.
The PC has to remain switched on permanently in this
case. Therefore, this type of monitoring should be
limited to a certain period of time (e.g. troubleshooting)
due to energy reasons. For continuous system
monitoring we recommend the optional Powador-
Display, Powador-easyLOG or Powador-proLOG
accessories (see page 12).
The KACOViso visualization software is
available for download under
http://www.kaco-geraetetechnik.de
Using the optional accessories (see
page 13) you can also establish a
wireless data connection between the
inverter and your PC over a long
distance.
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