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9 pin D-SUB female connector layout
9 pin D-SUB female connector
part# VIC-23/2. Works with PowerFLAG software
Signal Name
DB-9 Male
(UPS end)
DB-9 Female
(PC end)
Signal Name
RxD 1 3 TxD
TxD 2 2 RxD
GND 5 5 Common ground


According to 6 reports in our database (2 positive and 4 negative) the Invertomatic-Victron (IMV) UPS intelligent (serial communication) cable pinout may be incorrect.

Is this pinout
Invertomatic-Victron (IMV) UPS intelligent (serial communication) cable visual pinout:click to enlarge
Source(s) of this and additional information: UPS FAQ in russian
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