S7 PLC HMI

S7 PLC HMI

Operate S7, LOGO! and Modbus

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Free
In-App Purchases

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Details

  • Released
  • Updated
  • September 3, 2026
  • September 18, 2026

Features

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About

S7 PLC HMI turns your iPhone and iPad into an operator panel for Siemens LOGO! and SIMATIC S7 PLCs. Connect directly over your local network — no cloud, no account, no gateway. LIVE MONITORING • Digital and analog values refreshed twice a second • Analog values with multiplier, decimal formatting and optional limits — out-of-range readings are highlighted • Level bars and value trends — tap a trend for a large chart with axes • Blinking alarms with acknowledge command • Connection state always visible CONTROL • Switches, push buttons, valves, motors and drives with start/stop commands • Pulse buttons and Off/Auto/Manual mode selectors • Object types with local-mode variants for equipment that can be switched to manual on site • Safe command sequence matching PLC expectations GRAPHIC MODE • Place objects on your own process diagram or a photo of the technology • Live states and values directly on the schema • Tap an object to control it, drag objects in the editor SIRI, SHORTCUTS AND WIDGETS • Five Shortcuts actions — read values, toggle switches, send pulses, check alarms, set values — by voice with Siri, in automations or via the Action button • Home and Lock Screen widgets: a single value or a whole PLC group at a glance • Control Center controls for switches and pulses (iOS 18) ADDRESSES WITHOUT MANUALS • LOGO! 8: built-in catalog of the VM map (I, Q, M, NI, NQ, AI, AQ, AM…) • SIMATIC S7: address builder for M, I, Q and DB areas — bits, bytes, words and reals with live preview AND MORE • PLC diagnostics: RUN/STOP state and CPU information • Backup and transfer of your configuration between devices (AirDrop, Files) • Built-in demo line — try everything without any hardware • Localized in 10 languages COMPATIBILITY • Siemens LOGO! 8 (0BA8 and newer) with enabled Ethernet communication • SIMATIC S7-1200/1500 with enabled GET/PUT and non-optimized data blocks • SIMATIC S7-300/400 • Direct connection over TCP port 102 (S7 protocol) on your local network FREE VERSION AND FULL VERSION The free version includes 1 PLC group and 3 objects per group — enough to try the app with your own PLC. A single one-time purchase unlocks unlimited groups and objects on iPhone and iPad. SAFETY NOTE Intended for qualified personnel. The app sends commands to real equipment — always follow the safety regulations applicable to your installation. Siemens, LOGO! and SIMATIC are trademarks of Siemens AG. This app is an independent product and is not made, endorsed, or supported by Siemens AG.
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What's New in S7 PLC HMI

1.4

September 18, 2026

Modbus TCP is here — and the app now runs on your Mac, too: one purchase covers iPhone, iPad and Mac. Reading got much faster as well: a 30-tag group that took 301 ms now reads in 11 ms on our S7-1200. MODBUS TCP • Connect to Modbus TCP devices alongside LOGO! and SIMATIC S7 — most PLCs, drives, meters and gateways speak it • Coils, discrete inputs, holding registers and input registers, with the data types you already use • Byte order per group and per object (ABCD/CDAB/BADC/DCBA), FC16/FC15 writes, optional 1-based addresses • Presets and address examples for Siemens, Schneider, Allen-Bradley and ABB — no digging through manuals • A ready-made sample set for the Siemens MB_SERVER example FASTER AND STEADIER • Block reading over all protocols — Modbus TCP, LOGO! and SIMATIC S7: a 30-tag group that 1.3 read in 301 ms now takes 11 ms on our S7-1200 (LOGO!: 21 ms → 2 ms) • Automatic reconnect after a dropped connection or a phone waking from sleep • Live value preview while you pick an address — you see what the PLC returns before you save • Duplicate an object to build rows like HR100, HR101, HR102 in seconds • Keep the screen awake while connected, for panel use on a stand

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Subscriptions & In-App Purchases

$5.99

Full version

Unlimited PLC groups and objects