Manufacturing internet is not office internet. A factory floor has metal structures causing RF interference, high-power machinery creating electrical noise, temperature extremes, dust, and dozens of IoT devices, PLCs, and barcode scanners all competing for bandwidth. Getting industrial network design wrong means ERP drops during production runs, SCADA loses connectivity to PLCs, and scanners fail at the worst possible moment. This guide is for factory managers, production IT heads, and plant administrators planning network infrastructure in Karnataka.

Why Standard Office WiFi Fails on a Factory Floor

Office access points are designed for temperature-controlled, low-interference environments. Factory floors have: metal racks and machinery causing multipath interference, high temperatures near furnaces and ovens, dust and moisture damaging consumer-grade equipment, and forklifts and conveyors creating moving RF obstructions. Industrial-grade APs are built for these conditions — IP65-rated enclosures, wider temperature tolerance, and stronger antennas.

SCADA and PLC Connectivity — The Highest-Priority Requirement

SCADA (Supervisory Control and Data Acquisition) systems monitor and control production processes in real time. A SCADA communication failure can stop a production line, trigger safety shutdowns, or cause quality deviations. SCADA traffic must be isolated on a dedicated VLAN with the highest QoS priority — never competing with employee internet or CCTV. Low latency (under 10ms) and zero packet loss are mandatory for PLC polling.

Barcode Scanners and RFID — The Most Common Complaint

The most common complaint from manufacturing IT teams: barcode scanners dropping connection on the shop floor. Root cause is almost always one of three things: WiFi dead zones behind metal equipment, channel interference from too many APs on the same frequency, or slow roaming when a scanner moves between AP coverage zones. The fix is a professional heatmap survey followed by industrial AP placement with 802.11r fast roaming configured.

ERP Connectivity for Manufacturing — SAP, Oracle, and Local Systems

Manufacturing ERP systems (SAP, Oracle Manufacturing, or local ERPs) need consistent, low-latency connectivity for production orders, inventory tracking, and MES integration. For cloud-based ERP, this means reliable internet. For on-premise ERP, this means reliable LAN with internet for remote access. In either case, ERP traffic should be in the QoS priority chain, and the internet link should have an uptime SLA — not consumer broadband with no guarantee.

CCTV in Manufacturing — Coverage Beyond the Office

Factory CCTV is more complex than office CCTV: production lines need cameras at regular intervals for quality monitoring, outdoor yards and loading docks need weatherproof cameras, high-bay areas need cameras with IR for night vision, and remote monitoring from HQ requires reliable internet upload. Plan CCTV bandwidth separately from production network bandwidth — they should never share the same VLAN or QoS class.

Dual Internet Failover for Manufacturing Units

A production line that stops because the internet failed is an expensive problem. Modern manufacturing has cloud dependencies: ERP on Azure or AWS, SCADA with cloud historian, remote monitoring from HQ, and supplier portals. Each of these fails when the internet goes down. Dual last-mile failover — two separate internet connections on different physical routes — ensures production continues even when one ISP has an outage.