Modbus gateways, operator panels and accessories.
To bring measurements from energy meters and any Modbus slave onto the network, and to display and control them in the field.
BTR102
Product page →Connects your instruments' RS485 bus to the network: a PLC or SCADA reads every Modbus RTU slave as if it were on Modbus TCP. In the gateway versions it polls up to 20 requests, collects them in a register map and publishes them via web, MQTT and LoRa.
- Transparent bridgeEvery Modbus TCP request on port 502 is forwarded to the RTU bus.
- Up to 20 requestsTo RTU slaves on RS485 or TCP slaves on Ethernet, Wi-Fi STA and Wi-Fi AP.
- Ethernet and Wi-FiRJ45 10/100, Wi-Fi client and access point for configuration.
- SD and USB loggingBGM and BGML versions: CSV files, immediate or scheduled start. Firmware update from a USB stick.
- Display and touch keyInterface status at a glance, physical credential reset.
- SecurityHTTPS with TLS certificates, two access roles, Modbus TCP allowlist, security log.
Four versions, one hardware.
Choose according to what the device has to do: TCP ↔ RTU bridge only, gateway with data collection, cloud upload, LoRa communication.
| Function | BTR102.BBridge | BTR102.BGGateway | BTR102.BGMGateway + MQTT | BTR102.BGMLGateway + MQTT + LoRa |
|---|---|---|---|---|
| Transparent Modbus TCP ↔ RTU bridge | ||||
| Gateway: table of up to 20 RTU/TCP requests and register map | — | |||
| Cloud connection via MQTT | — | — | ||
| SD/USB logging, HTTPS API | — | — | ||
| LoRa expansion | — | — | — | |
| Order code | BTR102.B | BTR102.BG | BTR102.BGM | BTR102.BGML |
| Interfaces | |
|---|---|
| Ethernet | RJ45 10/100 Mb/s, static IP or DHCP |
| WiFi | Station (client) and access point |
| Modbus RTU | RS485, up to 256 nodes, 3-pole terminal, 3.5 mm pitch |
| Modbus TCP | Server, configurable port (default 502) |
| Storage | microSD and USB stick, FAT32 |
| Front panel | TFT display, capacitive key |
| Specifications | |
|---|---|
| Power supply | 10–36 Vdc, 2-pole terminal, 3.5 mm pitch |
| Maximum consumption | 1,6 W |
| RS485 common-mode voltage | 60 Vdc |
| Operating temperature | −20 … +60 °C |
| Humidity | max 95%, non-condensing |
| Form factor | 1 DIN module |
Diagram: all BTR102 communication paths
HMI07C
Product page →7" graphic terminal with capacitive touch and on-board I/O: in practice a complete PLC with a display. It fits into the customer's own housing or into the black panel-mount enclosure.
- 7" IPS display800×480, 65,536 colours, capacitive touch.
- On-board I/O5 PNP digital inputs, 2 relay outputs 5 A 230 Vac.
- CommunicationEthernet, Wi-Fi, BLE, 2 × RS485 (Modbus master and slave), USB A, NFC.
- MemorySD card up to 128 GB, 16 MB flash, 8 MB RAM.
- Easy developmentC/C++ code on FreeRTOS, with ready-made Modbus RTU/TCP, MQTT, graphics and FAT32 libraries.
- Custom applicationChronos can develop the application for you at short notice.
Order codes.
Board, enclosure and expansion are ordered separately.
| Code | Description |
|---|---|
HMI07C | HMI board with 7" capacitive display (board only, no enclosure) |
HMI07C_27-52_BLK | Black ABS enclosure for panel mounting |
HMI0xC_EXP_IO | Expansion board: 4 thermocouple inputs, 4 analogue inputs 0-10 V / NTC or 0-20 mA, 2 relay outputs 5 A 230 Vac |
For a complete panel-mount unit, order HMI07C + HMI07C_27-52_BLK. The 4G + GPS expansion shown in the brochure is not in the price list.
| Hardware | |
|---|---|
| Microcontroller | ESP32-S3 |
| Power supply | 9–36 Vdc from terminal, 5 Vdc from USB-C, < 4 W |
| On-board sensors | Temperature, humidity, buzzer |
| NFC | HF and LF reader 13.56 MHz |
| RTC | With backup battery |
| General specifications | |
|---|---|
| Operating temperature | 0 … +60 °C |
| Humidity | 10 … 90% non-condensing |
| Dimensions | 210 × 150 × 30 mm |
| Connections | Pluggable terminals, 3.5 and 5 mm pitch |
| Protection rating | to be defined |
T-BUS
1-module, 5-pole connector that fits into the DIN rail under the meter. By placing several connectors side by side, EMT13x meters share power and the RS485 bus without wiring each module.
- EMT132SELV 10–36 Vdc or 19–26 Vac supply and RS485 communication.
- EMT130RS485 communication only: the meter is powered from its voltage inputs.
- Less wiringOne power supply and one RS485 cable for the whole row of meters.
- 1 DIN module17.5 mm pitch, white.
Pinout to be supplied
Order code.
Order one connector for each meter in the row.
| Code | Description |
|---|---|
TBUS-17.5-5P | T-BUS DIN-rail connector, 1 module (17.5 mm), 5 poles, white |
Do you need a dedicated application?
We configure the BTR102 for your installation and develop a custom HMI07C interface.