B+GE-TECH DS100 (grid)
The B+GE-TECH DS100 is a MID-certified, bidirectional three-phase active energy meter for DIN-rail installation, used at grid connection points in buildings, sub-distributions, and energy management systems. This template reads the meter over Modbus RTU and exposes per-phase voltages (L1, L2, L3), per-phase currents, per-phase active power, total active power, and cumulative energy. With these registers in your ModbusCloud portal you can track grid consumption and export in real time, detect phase imbalances, and build a full energy audit trail for a site.
- Protocol
- Modbus RTU
- Connection
- RS485
- Registers
- 11, read only
- Brand
- B+GE-TECH
- Last updated
Registers (11)
11 read, 0 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| power | W | Read | |||
| energy | Wh | Read | |||
| currents_a | A | Read | |||
| currents_b | A | Read | |||
| currents_c | A | Read | |||
| voltages_a | V | Read | |||
| voltages_b | V | Read | |||
| voltages_c | V | Read | |||
| powers_a | W | Read | |||
| powers_b | W | Read | |||
| powers_c | W | Read |
Loading registers…
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If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Monitor total and per-phase active power to detect load imbalances across L1, L2, and L3 in real time.
- Track cumulative energy at a sub-distribution board to produce tenant or cost-centre billing reports.
- Alert on unexpected total-power spikes to identify unauthorised loads or faulty equipment quickly.
- Compare per-phase currents over time to verify that three-phase loads remain balanced after changes.
- Report grid import and export trends across multiple sites from the ModbusCloud multi-site overview.
Installation
Enable Modbus RTU on the B+GE-TECH DS100 by entering the configuration menu on the meter's front panel, then set the desired unit ID, baud rate (default 9600), and data format to 8N1 under the communication settings.
Wire the DS100 RS485 terminals (A+, B-) to the corresponding RS485 terminals on the ModbusCloud Gateway using a twisted-pair cable; keep the run under 1000 m and add a 120-ohm termination resistor at each end of the bus if the meter is the last device.
In the ModbusCloud portal, add a new Gateway, select the RS485 port, match the baud rate and unit ID to the values set on the meter, then import the B+GE-TECH DS100 template with one click and assign it to the correct unit ID.
Verify the connection by opening the live register view in the portal and confirming that voltages_a, voltages_b, and voltages_c show plausible line voltage values; if any register reads zero or an error, cross-check the unit ID and baud rate settings on the meter.
Things to watch for
Why do all register reads return zero or an error?
The most common cause is a mismatch between the unit ID configured on the DS100 and the unit ID set in the portal. Enter the meter's configuration menu, note the slave address, and update the ModbusCloud template assignment to match. Also confirm the baud rate on both sides is identical.
Values appear but look wrong or are off by a factor of 100 or 1000. Why?
The DS100 returns signed 32-bit integers with implicit decimal scaling. For example, energy is delivered in hundredths of a unit so a raw value of 374 means 3.74. Check the scaling factor documented in the OpenEMS template; the ModbusCloud template applies the correct factor automatically, but a manually configured connection may not.
The gateway connects to the RS485 bus but no data arrives. What should I check?
First verify RS485 polarity: A+ on the meter must connect to A+ on the Gateway and B- to B-. Swapped wires cause silent failures. Also check that no other device on the same bus has the same unit ID as the DS100, and that the termination resistor is present at the physical ends of the cable run.
Readings appear intermittent when multiple DS100 meters share one RS485 bus.
Each DS100 on a shared bus must have a unique unit ID. Access the configuration menu on each meter in turn and assign sequential IDs. Also ensure the baud rate is the same on every device. The DS100 supports 9600, 19200, 38400, and 115200 baud; pick one rate and configure all devices and the Gateway to match.
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