Modbus TCP Tools vs S7 PLC HMI

Modbus TCP Tool is a professional Modbus TCP client designed for engineers, technicians, and industrial automation professionals who require fast, reliable communication with Modbus devices. Designed for local network communication with a focus on performance, reliability, and ease of use. Main Features • Read Holding Registers (FC03) with configurable polling intervals. • Write Single Registers (FC06) with confirmation (Pro). • View register values in Decimal, Hexadecimal, Binary, or All formats. • High-performance polling for real-time monitoring. • Built-in Modbus TCP simulator for testing without external hardware. • Save connection profiles and favorite register ranges. • Register aliases for easier identification (Pro). • Bit-level register inspection (Pro). • Trend analysis with Min, Max and Average values (Pro). • Configurable register alarms (Pro). • Diagnostics with freeze snapshots, textual comparison and CSV/JSON export (Pro). • Dark interface optimized for industrial environments. Compatible with PLCs, gateways, HMIs, sensors, embedded devices, and any equipment implementing the Modbus TCP protocol, including devices from manufacturers such as Siemens, Schneider Electric, Allen-Bradley, and Modicon. Whether you're commissioning equipment, troubleshooting industrial networks, or monitoring production systems, Modbus TCP Tool provides a fast and intuitive way to interact with Modbus TCP devices.

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.