Problem / solution guide
Modbus Register Data Logging
Collect and log Modbus register data from meters, sensors and controllers for remote monitoring projects.
Hardware in this guide
Product-family photos. See each product page for specifications and options.
Equipment selection, or help with the whole farm?
Send your country and a description of the equipment or problem. We can recommend a device, prepare a kit or plan the farm equipment and integration. Add technical details when available.
Compare ways to work with SunGene →Problem to solve
Many field devices expose data through registers, but the buyer still needs polling rules, storage intervals and a reliable export path.
Measurements that matter
- Register value
- Timestamp
- Polling success
- Alarm threshold or trend
Suggested hardware configuration
- RS485 data acquisition gateway
- Register map configuration
- Local buffer or export path
- MQTT, CSV or Modbus TCP handoff
Equipment in the system
Example equipment arrangement. Check compatibility and agree who handles software, PLC/SCADA programming and site installation.
Data destination
Customer platform or an agreed third-party service
Information needed before quotation
- Register map and data type
- Polling interval
- Storage or export requirement
- Network and power condition
Recommended next steps
- Review Modbus data acquisition
- Compare MQTT and HTTP upload
- Prepare a sample register map
Related pages
FAQ
What does SunGene need before quoting Modbus Register Data Logging?
For a quotation, send these details: Register map and data type; Polling interval; Storage or export requirement; Network and power condition. We use them to select sensors, gateways, power and the data connection.
What must the register list contain?
List the device address, function code, register address, data type, scale and unit for each value. Include word order where a value spans more than one register, and verify a reading against the local instrument.
How should gaps appear in the exported data?
Retain the timestamp and a quality or read-status field. Keep a failed read distinct from a measured zero, and agree the logging interval and retention period before starting collection.
What should I check before selecting equipment?
Record these site details: Register value; Timestamp; Polling success. Check the sensor output, receiving input, power supply and installation conditions together. Confirm any required approvals for the exact model and destination.