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LamaPLC: XTM35SC Modbus communication
- VE EMDIN02
The XTM35SC is an inexpensive current meter that can be purchased (e.g. on Amazon). It measures consumption, voltage and current on one phase. It does not require an external measuring ring. Suitable for home automation and smaller equipment. Of course, it is not MID compliant. The measurement results can also be queried remotely via Modbus RTU communication.
Description:
- 35 mm standard rail mounting according to the DIN EN50022 standard.
- Bipolar width (module 17.5mm), conforms to the DIN43880 standard
- Standard configuration 5 + 1 digit display (9999999.1kWh) LCD. Function can be selected (display voltage current, power, frequency, power factor).
- Setup measurement single-phase two-wire active energy consumption. It's nothing to do with the direction of load current flow. Compliance with GB / T17245.321-2008 standard.
Specification:
- Power supply: 230V, 1 phase
- Current: 5 (80) A
- Accuracy class: 1.0
- Frequency: 50/60Hz
- Display mode: LCD 5+1 digits = 99999.9 kWh
- Power Consumption: ⇐0.4W (8VA)
- Temperature range: -20 to 65 °C
- LED: 1 flashing / pulsing
- Pulse output: 1000 imp/kWh
- Voltage: 12 to 27V
- Current: 27mA
- Pulse value: 90 ms
- Model: XTM35SC
- Accuracy: Class 1
- Voltage: 220V
- Current: 5(30A 15/15(60A Optional (optional)
- Insulation performance: AC voltage 4kv for 1 minute, 1.2/50us waveform pulse voltage 6kv
- Size: 80 x 65 x 35mm / 3.15 x 2.56 x 1.38inch
Wiring
Modbus maps
RS485 communication interface, MODBUS RTU protocol:
- Baudrate: 9600 Baud
- Parity: Even
- Databits: 8
- Stopbits: 1
32 bit (2 words) input registers
The registers are read-only.
Register Nr | 32 bit address | Description | Note |
---|---|---|---|
30000 | 0 | Voltage (V) | |
30008 | 4 | Current (A) | |
30018 | 9 | Power (W) | |
30026 | 13 | Volt-ampere reactive (var) | |
30042 | 21 | Power factor - Leistungsfaktor (pf - W/VA) | |
30054 | 27 | Frequency - Frequenz (Hz) | |
30256 | 128 | Energy - Energie (kWh) |
32 bit (2 words) holding registers
The registers are read / write.
Register Nr | 32 bit address | Description | Note |
---|---|---|---|
40000 | 0 | Baudrate | Default value: 9600 |
40008 | 4 | - | - |
40012 | 6 | - | - |
40016 | 8 | Modbus RTU Address | Default value: 45 |
40024 | 12 | - | Default value: 1000 |
40032 | 16 | - | - |
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