The Schneider Electric VW3A58104 is a dedicated adapter and spare part within the Altivar range, built to link a PC's RS485 port to an RS232C serial interface for ATV 58 drives. This is the piece you need when you're commissioning or troubleshooting an older ATV 58 and your laptop only speaks RS232 — it handles the protocol and electrical conversion so the drive and the PC can talk without a fight.
The VW3A58104 carries a lifecycle stage of 'mature' and is listed as 'Active' in production status. For a shop-floor buyer paying out of pocket, that means you can still source this as a normal line item — no last-time-buy panic, no scavenger-hunt through surplus brokers. It's an established part, not a ghost.
What It Connects
This adapter sits between a variable speed drive from the Altivar family (specifically the ATV 58 series) and a PC running the drive's configuration software. The RS485 side hooks into the drive's communication port; the RS232C side presents a standard 9-pin D-sub that any older PC or serial adapter can handle. No extra power supply needed — it draws what it needs from the drive's serial line.