The STREAMLUX SLS-720F stationary ultrasonic flowmeter supports Modbus RTU over an RS-485 physical connection. A working SCADA template cannot be defined from that fact alone: obtain the manufacturer’s register map and serial settings before creating tags or selecting data types.
Confirmed Interface and Open Parameters
| Item | Evidence status | Engineering decision |
|---|---|---|
| Device | STREAMLUX SLS-720F | Select the matching device documentation. |
| Protocol | Modbus RTU | Configure the SCADA channel as a Modbus RTU master. |
| Physical layer | RS-485 | Use an RS-485 interface or converter appropriate for the SCADA host. |
| Baud rate, parity, data bits, and stop bits | Not provided | Read the configured values from the device or its documentation. |
| Slave address | Not provided | Determine the device address before polling. |
| Register addresses, function codes, and data formats | Not provided | Use the manufacturer’s register map; do not infer these fields. |
Collect the Required Device Data
Before building the SCADA channel, record the SLS-720F slave address and every serial setting. Obtain the register map identifying each required measurement, its Modbus register type, address convention, supported function, word length, byte or word order, scaling, units, and access mode. Address notation matters because documentation and SCADA drivers may represent the same register with different offsets.
Configure the SCADA Connection
- Create a serial communication channel that uses Modbus RTU over the available RS-485 interface.
- Enter the SLS-720F serial settings exactly as configured in the instrument, including its slave address.
- Create tags only from documented register entries. Map each tag to the specified register type, address, function, data format, word order, scaling, and engineering unit.
- Group initial polling around a small set of required values. Expand the template only after those values decode correctly.
Verify Communication and Data Decoding
First confirm that the addressed device returns valid Modbus responses without timeout or exception indications. Then compare each decoded SCADA value with the corresponding value shown by the flowmeter. If communication succeeds but values are incorrect, recheck address offset, register type, data width, word order, and scaling. If no valid response arrives, recheck the RS-485 interface, serial settings, and slave address before changing tag definitions.
FAQ
Does the STREAMLUX SLS-720F support Modbus RTU?
Yes. The available evidence identifies Modbus RTU over RS-485 as the supported connection.
What settings are needed to connect an SLS-720F to SCADA?
Determine the slave address, baud rate, parity, data bits, and stop bits from the instrument configuration or manufacturer documentation. The available evidence does not provide those values.
Can I build an SLS-720F SCADA template without a register map?
No reliable template can be created without documented register addresses, functions, data formats, word order, scaling, and units. Obtain the SLS-720F register map before defining production tags.