The 6ES7700-0AL00-0YA0 is a SIMATIC UD700 update device — a spare part for loading STEP7 and operator panel configurations onto SIMATIC C7 and S7 CPUs, specifically the 312IFM and 314IFM. It communicates via MPI over RS-485, the standard Siemens multi-point interface for programming and HMI connections on that generation of controllers.
Supply and approvals
Runs on 24 VDC nominal, with a permissible range of 15 V to 30 V DC. Typical current draw is 80 mA; maximum is 160 mA — light enough that a standard 24 VDC power supply can feed it without dedicated branch protection. Carries FM approval for Class I, Division 2, Groups A, B, C, D (hazardous locations), plus UL 1950 / CSA C22.2 No. 950. That FM stamp means it can sit in a Division 2 area without purging — relevant for oil/gas or chemical processing panels where the update device is mounted near the controller.
IP65 on the front face, IP20 on the housing. That front seal lets it mount in a panel door subject to washdown splashes or dusty environments — the operator-facing side is protected while the rear stays open to the cabinet interior. Operating range is -20 °C to 70 °C, with humidity tolerance up to 95 % at 25 °C (non-condensing). Panel cutout dimensions: 144 mm wide × 72 mm tall × 27 mm deep — shallow enough for a standard enclosure door.