Llessur Posted April 11, 2022 Share Posted April 11, 2022 I have an SM1500-2UC that I'm trying to connect to a Supermicro G-2U-X10DRU server. I first tried an RJ-45 to a DB-9 serial cable. I tried all the different combinations of cable on apcupsd to no avail. I then tried an RJ-45 to USB cable with apcupsd giving the same "LOst communications' error. Can someone help me get this figured out? Quote Link to comment
JonathanM Posted April 11, 2022 Share Posted April 11, 2022 Have you tried the USB or serial cable that came with it? AFAIK the RJ45 "serial" port uses a special circuit that generic cables won't work. Quote Link to comment
Llessur Posted April 12, 2022 Author Share Posted April 12, 2022 (edited) The RJ-45 connector is labled as "IOIOIOI". To me that looks like a serial connection, but I'll try getting a cable that's USB (APC side) to USB(server-side). There wasn't a cable that came with the UPS. Edited April 12, 2022 by Llessur Quote Link to comment
JonathanM Posted April 12, 2022 Share Posted April 12, 2022 2 hours ago, Llessur said: There wasn't a cable that came with the UPS. I was just going by the manual that shows 2 cables that come with it. https://download.schneider-electric.com/files?p_File_Name=SU+QS+990-5460C+MN01+EN.pdf&p_Doc_Ref=SPD_AHUG-A5Y9GY_EN&p_enDocType=Quick+start+guide 2 hours ago, Llessur said: The RJ-45 connector is labled as "IOIOIOI". To me that looks like a serial connection Oh, I'm positive it's a serial connection, but APC is notorious for not using industry standard pinouts to force you to buy their specific cables, or make your own. Quote Link to comment
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