If you need to build a new serial cable like we did, a quick visit. Most of the older APC UPS units (like our handy BackUPS 500) have a serial port. Well, it may be proprietary (in the sense of it being a non standard pinout), but you can find pinout diagrams if you know what you are looking for, and if you have a few inexpensive tools, you can also make one. Newer APC units seem to be including USB cables. | NOTE: Solder a wire to the metal shell for use as a FRAME-GND |Īnd instead of using a PC with a serial port, I would advise simply getting one of the PL2303-based USB-to-serial adapter cables - they work well for managing serial console stuff with nearly every OS released within the last 10 years. | automatic or PNP cable identification by UPS software. Jumpered pins in the DB9F connector are for | | ordinary RS-232 serial protocol at 2400-8N1 with software | | Operation: The UPS communicates with the Computer via | | This information is verified and tested to be 100% correct.

| Black APC 940-0024C Smart Signalling UPS Cable Wiring Diagram | The documented pinout looks like a simple null-modem cable swapping the TX and RX pins: +-+ Having configured a number of SmartUPSes with AP9606 in my time, I do not remember ever having had the need for an 'APC-proprietary' serial cable.

OTOH, getting this APC cable would also mean I would have to find an antiquated computer that also has a serial port. However, I have here in hand a Cisco YC Cable that looks like it could work, but I am having hard time trying to find the wire configuration to see if they would match up. Because we inhereted the UPS unit, this smart-signalling cable is nowhere to be found. I don't have any way of telling if the card is just wnt bad, or if I really have to attempt the serial as these instructions. The only thing that seperates me from the UPS unit is 48p switch, so there shouldn't be any network filtering within the same subnet.

Ran WireShark while attempting previous steps to see if the NIC's MAC or IP appeared anywhere for ARP requests.

Hit the reset button, and the reattempted the previous step.

I did manual arp entry to reach out to as per these instructions.

Ever since, any attempt trying to make contact with the NIC fails. (Thanks to Clint Sare for the submission. All was good.įor whatever reason, when we reboot our machine that we had configured for auto-shutdown with our UPS unit, the NIC on the UPS seemingly just dropped it's IP configuration (still trying to figure that one out). Here are a couple of (fairly) common cables used for connecting Uninterruptible Power Supplies (UPSs) to PCs. Long story short, I was able to configure network adapter using telnet. The UPS unit uses an AP9606 network card, but also has what looks to be a serial port for terminal use (putty is awesome). We have a UPS unit for which we recently configured to work on our network. First, not sure if this question belongs here or SU, so please advice accordingly before wildly down-voting or blasting me.

Smart serial cable nut