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tMPC-04 - Pulse counter with Modbus interface
The tMPC-04 is a 4-input pulse counter with Modbus interface. Supported by LK4.
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The tMPC-04 is a 4-input pulse counter designed for use with any meters with pulse outputs. It communicates via Modbus RTU to provide pulse counts, calculated energy and estimated power. Other measures can also be measured, e.g. flows from water or gas meters. Conversion to these units is based on user-entered coefficients (e.g. pulses per kWh), the default is 1000 pulses per unit.
Technical specifications
| Power supply | 5 ÷ 12 V DC (connector) 5 V (USB) |
|---|---|
| Pulse inputs | 4 inputs |
| Entry level thresholds | Low = 0 ÷ 1.0 V, High = 1.3 ÷ 25 V |
| Maximum counting speed | ~2000 Hz (up to 4000 Hz without power estimation) |
| Interfaces | Modbus RTU (RS485), Serial (over USB; 115200 baud) |
| Dimensions | 74 x 40 x 30 mm (without DIN handle) |
| Weight | 44 g |
Default setup
Out of the box, the tMPC-04 is pre-configured with:
- Modbus Slave ID: 1
- Pulse Conversion Factor: 1000 pulses per unit (e.g., imp/kWh) for all 4 inputs
If these settings match your energy meters, the device is ready for immediate use.
More information about the device, usage, and custom Modbus module configuration for LK4/LK3.5+ is available at https://tinycontrol.pl/en/tmpc-04/.
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