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Modbus Poll reads, writes and simulates Modbus TCP devices from your iPhone or iPad. Connect to a PLC, power meter, drive or inverter on your network and watch every register update live. MASTER • Modbus TCP • Read coils, discrete inputs, input registers and holding registers • Write single and multiple coils and holding registers • Data types: INT16, UINT16, INT32, FLOAT32 and FLOAT64 • Word order AB CD, CD AB or BA DC; decimal, hex or binary display; 0- or 1-based addresses • Several read blocks per device, polled together • Modbus exception codes shown on the rows they affect SLAVE SIMULATOR • Run a Modbus TCP slave on your device • Device templates with live, changing values: Schneider Electric PM5560, SMA STP 60-US-10, Endress+Hauser Promag 10W, ABB AZL402, Emerson Daniel 1000 and a Raritan PDU • Lock a register to hold its value while the rest keep changing DIAGNOSTICS • Traffic log with every request and response decoded • Live trend chart for any register • Scan a subnet for devices listening on port 502 • Saved connection profiles Modbus TCP only: RTU and RS-485 serial are available in the Mac version. Voltrus Connect subscriptions renew automatically until cancelled in your Apple Account settings. Privacy Policy: https://voltrus.id/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/