Manufacturing OT
EtherNet/IP, PROFINET, Modbus, OPC UA and MQTT: how machines talk, and how to get their data out without destabilizing control.
Modern machines commonly use EtherNet/IP, PROFINET or Modbus TCP over Ethernet. Older equipment still uses serial fieldbus such as Modbus RTU, DeviceNet or PROFIBUS. To get data from these systems to ERP and reporting safely, we use OPC UA or MQTT brokers as a translation and isolation layer, so business systems read from the broker instead of polling controllers directly.
Machine communication
EtherNet/IP, PROFINET, Modbus and serial fieldbus are translated into OPC UA and MQTT, so ERP and reporting get data without talking directly to controllers.
Industrial protocols are often chatty and sometimes broadcast-heavy. A misconfigured DHCP server, a duplicate IP, or a device leaking multicast traffic can stop a deterministic network. IGMP snooping, VLANs, QoS and careful IP planning are not optional once the machine count grows.
We never let ERP or BI talk directly to a PLC. Data flows from the controller to an HMI or SCADA, then to a historian or OPC UA/MQTT broker in the industrial DMZ, and from there to business systems. The return path is blocked.
Common questions
Yes, with protocol gateways that convert serial to Ethernet or Modbus TCP to OPC UA. The gateway is placed in the right zone and configured to expose only the data required.
No, if it is separated. MQTT is for telemetry, not control. It sits on a separate network path or VLAN, so production messages keep their priority.
We review your network, security posture, cloud tenant and recovery plan, then hand you a plain-language report of what we found and what it means for the business.
