MILESGO
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Industrial & ManufacturingS34

Legacy Equipment Connectivity

Il problema

Machines and instruments with RS-232 or RS-485 ports still run well but are invisible to modern systems, and replacing them only for connectivity is hard to justify.

Panoramica della soluzione

MILESGO gateways collect data from legacy RS-232 / RS-485 instruments, machine HMIs and CNC controllers, HART field transmitters, run/stop and fault dry contacts over Modbus RTU / HART, and deliver it to SCADA, MES, a cloud platform (MQTT) as Modbus TCP / MQTT / OPC UA. Field equipment keeps its own protocol and control logic; integration is done by configuration and point mapping, not custom code.

Typical scope

  • legacy RS-232 / RS-485 instruments
  • machine HMIs and CNC controllers
  • HART field transmitters
  • run/stop and fault dry contacts

Protocol path

Modbus RTU / HART → Modbus TCP / MQTT / OPC UA

Implementation checklist for the project manager

  • Collect register maps and protocol documents from every equipment vendor early; a missing map is the most common delay.
  • HART instruments are read through the HART converter; list device addresses and variables for each loop.
  • RS-485: shielded twisted pair, daisy-chain topology, termination at both ends, up to 32 nodes per segment without a repeater.
  • For hard-wired signals, list each DI/DO/AI/AO with its type (dry contact, 4–20 mA, 0–10 V, PT1000) and choose I/O modules accordingly.
  • Commission in read-only mode first; enable write / control points only after the client approves each one.
  • Build and simulate the configuration off site (FAT) before installation to shorten time on site.

Project deliverables

  • Signed point table and protocol mapping
  • Gateway configuration files and backups
  • IP address plan and network drawing
  • FAT and SAT test records
  • As-built documentation and operator training

Architettura del sistema

Field layer: legacy RS-232 / RS-485 instruments, machine HMIs and CNC controllers, HART field transmitters, run/stop and fault dry contacts, connected over Modbus RTU / HART. Edge and integration layer: MILESGO protocol gateways and edge controllers, mounted on DIN rail in existing panels, polling each device, time-stamping values and buffering them locally. Upper layer: SCADA, MES, a cloud platform (MQTT), which receives the data as Modbus TCP / MQTT / OPC UA. Remote access for maintenance runs over VPN rather than open internet ports.

Composizione del sistema

Field devices
legacy RS-232 / RS-485 instruments, machine HMIs and CNC controllers, HART field transmitters, run/stop and fault dry contacts
Edge / integration
MILESGO protocol gateways and edge controllers
Upper systems
SCADA, MES, a cloud platform (MQTT) (Modbus TCP / MQTT / OPC UA)
Tools and commissioning
Web-based configuration, point table import/export (Excel), off-site simulation and on-site diagnostic tools

Funzionalità software e IA

  • Point mapping assistance from uploaded register listsPilota

Fasi di realizzazione

  1. 1

    Site survey and point list

    Inventory devices, protocols, register maps, panel space, power and network paths.

  2. 2

    Design and point table sign-off

    Map every point to the target protocol and system; agree it with the client and the upper-system contractor.

  3. 3

    Configuration and FAT

    Build the gateway configuration off site, simulate it and test against the signed point table.

  4. 4

    Installation and wiring

    Mount gateways on DIN rail, wire RS-485 / I/O / Ethernet, apply the IP plan.

  5. 5

    SAT and alarm tests

    Verify values against local readings, test every alarm and command end to end.

  6. 6

    Handover and support

    Hand over configuration backups, point table and as-built documents; train operators.

Valore per il cliente

  • Monitoring added without changing existing control programs
  • Data ready for cloud platforms and analytics
  • Reliable trend data for optimisation and fault diagnosis
  • Open interfaces (BACnet, Modbus, OPC UA, MQTT, HTTP) avoid lock-in to one vendor

Altre soluzioni in Industrial & Manufacturing

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