APC backup USB vs RS232

RouterOS General
1

Hi all,

My APC Backup Pro 500 works fine with MT using USB cable. But when I use serial cable delivered with the APC, it does not work. There is a pin diagram of the serial cable with two DB9 connectors, but APC is using cable with DB9 connector on side of PC and R52 (ISDN linke) connector. How it should be connected?

2

The pin layout is the following (AFAIK):

DB9F --> RJ45-8
RxD 2 --> 1 TxD Send
TxD 3 --> 7 RxD Receive
GND 5 --> 6 Ground
FG Shield --> 3 Frame Ground


seandsl

3

Thanks, I will try…