Enfinity 1000TL - Page 31

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Figure 28: RS-232 communication cable and interface
RS-232PinDenition
Pin 1 2 3 4 5 6 7 8 9
Function NC TxD RxD NC Common (GND) NC NC NC NC
One inverter can only communicate with one PC at the same time through a RS-232 port. Thus this
method is generally used for communication with a single inverter when updating software or during
servicing or system testing.
2 RS-485Communication(severalinverters)
• Communication
RS-485isgenerallyformultiinverters’communication.Upto32inverterscouldcommunicateatthesame
time, but wire length should be ≤1,200m.
PIN 1
Figure 29: RS-485 interface of the Enfinity inverter
RS-485PinDenition
Pin 1 2 3 4
Function TX+ TX- RX+ RX-