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User's Manual
8.2.2 PC connect to a single UTE9800+ series via RS485
· The number in block diagram represents the pin number of DB9 interface.
· Use direct serial port line to connect PC and the RS232 to RS485 convertor.
· This connecting method is only support Modbus instruction.
As shown in the following figure.
8.2.3 PC connect to multiple UTE9800+ series via RS485
· The number in block diagram represents the pin number of DB9 interface.
· Use direct serial port line to connect PC and the RS232 to RS485 convertor.
· A , B port of the RS232 to RS485 convertor parallel connect to A , B port of multiple UTE9800+ series.
· This connecting method is only support Modbus instruction. The baud rate of the PC must be the same as that
of each UTE9800+ series, and the IP address of each UTE9800+ series must be different.
As shown in the following figure, connect to PC by using multiple UTE9802+.
PC
Instruments.uni-trend.com
PC
PC
RS232 to RS485 converter
RS232 to RS485 converter
UTE9800+ Series Smart Digital Power Meter
UTE9800+
UTE9800+#1
UTE9802+#1
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