TLM Series LoRa Modems and LoRaWAN EndNode Modems
TLM Series LoRaWAN EndNode Modems can create a link between field devices and LoRaWAN server.
Field devices with TCP/IP connectivity can be read via Modbus TCP protocol and data can be sent to LoRaWAN Server. Field devices with RS232/RS485 Serial interface can be read via Modbus RTU protocol and data can be sent to LoRaWAN Server as well. Up to 64 Modbus devices in the field can be connected to LoRaWAN Server via TLM Series LoRaWAN EndNode Modems. Modbus Query interval and LoRaWAN minimum data send interval can easily be configured for each query on TLM web interface and user can also configure Modbus Query for each device by selecting address, function code, data address, total number of data and time out interval.
Function codes
1: Read Coils Status
2: Read Input Status
3: Read Holding Registers
4: Read Input Registers are supported.
LoRaWAN Downlink messages can be used to send Custom Modbus Commands remotely to control field TCP/IP and RS232/RS485 devices from LoRaWAN Server Side. Function codes 1-2-3-4 are supported and additionally:
5: Force Single Coil
6: Preset Single Register are supported for remote control.
Transparent connection between field devices and applications and LoRaWAN server is also available. In this function, TCP/IP or RS232/RS485field devices can send data to LoRaWAN Server as it is.
The TLM Series LoRa RF Modems build a private radio network between Ethernet devices and RS232 / RS485 serial devices. Two or more modems exchange data over LoRa; each modem connects the radio network to its own Ethernet port or serial port. The data passes unchanged, so any protocol can be carried. For Modbus the modem can also convert between Modbus TCP and Modbus RTU. The web interface lists the other modems a TLM hears, with their signal levels, addresses and settings, and offers a remote ping, a link test and remote node information for installation. The 868 MHz models are TLM154, TLM254 and TLM655, the 2.4 GHz models TLM194, TLM294 and TLM695.
Four device functions, chosen on the Operating Mode page:
1. LoRa to TCP/UDP Server Gateway
2. LoRa to TCP/UDP Client Gateway
3. LoRa to SERIAL Device Gateway, optionally with Modbus TCP to RTU conversion, Modbus RTU master to TCP conversion or IEC 62056-21 Mode C baud switching
4. LoRa Repeater
Typical applications: automated meter reading, wireless networks, home, building and industrial automation, remote control, wireless sensors, telemetry, wireless alarm and security systems.
TLM655 and TLM695 add a BPL (Broadband Power Line) link that carries Ethernet over the power line. Devices on the power line network talk TCP/IP to each other as over a cable, without new cabling.
Documents: TLM Series User Manual (firmware 3.00.01) - TLM Series Datasheet (TLM-Series-Datasheet-3.00.01.pdf).
* TLM655 and TLM695 are also made with a 9 - 36 V DC power input (P-P data connection).
