24
8. COMPUTER INTERFACE
8.1 communication interface
The communication interface (DB9 port) on the back of the UPS may be
connected to a host computer. The port provides communicating with the
computer like below.
Supply RS-232 for monitoring software of
UPSilon 2000
The UPS communicates with the computer by sending out RS-232 data
streams to one of the serial ports. By this method the user is able to monitor
the following parameters.
Input Voltage
Indicates the present input voltage to the UPS
system when AC power is present.
Output Voltage
Indicates the present output voltage of the UPS.
AC Frequency
Indicates the actual output frequency of the UPS.
Battery Voltage
Indicates the present DC voltage of the UPS
battery.
Temperature Indicates
the
actual temperature inside the UPS.
25
8.2 DB9 Interface Connector
DB9 PIN Assignment
PIN 2: RS232 RXD
PIN 3: RS232 TXD
PIN 5: GND
The other PINs have no function.
DB9 INTERFACE CONNECTOR
