Modern grain storage plants cannot run at full efficiency without centralized monitoring of bin levels, temperature, moisture, and conveying lines. SCADA-based automation enables alarm management, reporting, remote intervention, and traceable records. Basut Silo projects plan PLC/SCADA architecture, field sensor networks, secure remote access, and commissioning documentation together. The guide below covers sensor networks through cybersecurity for commercial wheat, corn, and barley sites.
Sensor Network and Data Acquisition
Level (switch, radar), temperature cables, moisture probes, pressure sensors, and motor current metering are collected via Modbus RTU/TCP, OPC UA, or Ethernet/IP. Use edge gateways and local buffering to prevent data loss during outages—test communication-loss scenarios in PLC logic.
Calibrate sensors at least annually against reference instruments; moisture and temperature drift triggers incorrect ventilation decisions. Include tag lists and address maps in project delivery documentation.
Basut Silo provides standard tag lists, I/O lists, and sensor mounting diagrams on new plants.
- Level: switch, radar, load cell
- Temperature: cable, probe, regional profile
- Moisture: inline, cable sensor, calibration
- Energy: motor current, kWh metering
SCADA Screens and Alarm Management
Operator screens should visualize bin maps, trend charts, line status, and fill levels. Alarm thresholds can trigger SMS, email, or mobile alerts with priority classification (critical, warning, info).
Prevent alarm floods—define debounce and hysteresis logic in PLC. Archive alarm history for audit and insurance evidence.
Harvest-year comparison, moisture-temperature curves, and energy dashboards support management KPI tracking.
Remote Monitoring and Intervention
Remote intervention during off-shifts reduces hotspot risk. Fan start/stop, aeration scenarios, and alarm acknowledgment can run via mobile or web interface—critical safety interlocks remain at the field panel.
Historical data supports maintenance planning and harvest-year comparison. Retain data archives for at least one storage season.
Basut Silo can evaluate a secure cloud bridge for reporting and mobile access while keeping critical control local.
Basut Silo Automation Approach and Cybersecurity
New plants receive standard tag lists, PLC programs, SCADA screens, and commissioning checklists. Retrofit SCADA modules enable gradual digitization of existing panels.
Cybersecurity essentials: VPN, role-based access, OT network segmentation, and regular backups. Remote access should default to closed; enable MFA when opened.
Validate ESD, communication loss, and manual mode transitions through scenario testing.
Maintain an OT asset inventory—PLC firmware versions, sensor serial numbers, and network diagrams simplify troubleshooting after staff turnover.
- Protocols: Modbus, OPC UA, Ethernet/IP
- Security: VPN, segmentation, MFA
- Backup: PLC/SCADA configuration archive
- Testing: ESD, comm loss, interlock scenarios
Commissioning and Lifecycle Support
Deliver FAT/SAT test records with the SCADA project—include simulated hotspot, comm-loss, and overfill scenarios signed by operations staff.
Plan an annual SCADA review to update alarm limits after process changes such as new bins, higher fill rates, or added drying capacity.
Train backup operators on manual aeration and ESD recovery—SCADA uptime is high but harvest peaks coincide with storms and power events.
Frequently Asked Questions
Should SCADA be cloud or on-premise? Critical control stays local; a secure cloud bridge can serve reporting and mobile access. Local gateway buffering and field alarms continue during internet outages. Never expose PLC programming ports directly to the public internet.
Which protocols are used? Modbus RTU/TCP, OPC UA, and Ethernet/IP are common choices. Gateways or protocol converters are evaluated based on existing equipment. Standardize tag naming across bins before adding retrofit sensors.
How is cybersecurity handled? VPN, role-based access, OT network segmentation, regular backups, and update policies are essential. Protect remote access with MFA. Review vendor remote-support accounts after commissioning and disable unused credentials.