Smart Dual Interface RS485 To NB-IoT Universal Data Collector For
AMI Solution
DCNL12-RDK150 G2AY collector (V2.06) (DTU) (uplink NB-IoT, downlink
RS485) is a universal protocol product what based on edge computing
on the directional protocol collector. The collector is suitable
for all communication protocols of the RS485 interface standard.
The collector is convenient and easy to use, and only needs to
install the collector in the area where covered by the NB-IoT
signal. It can read the terminal’s data automatically, and upload
to the COAP cloud platform. DCNL12-RDK150 G2AY collector has strong
adaptability. There is no requirement for the communication
protocol of the downlink terminals. Only the baud rate of the RS485
bus is the same, and the communication addresses are different. It
can automatically collect data from multiple terminal devices.
Main Features:
1. Active Upload / Two-way Transparent Transmission:
The collector applies edge computing technology and has strong data
storage, processing and control capabilities.
Through the local configuration of RS485 port and remote NB-IoT
wireless port, the collector's task list and upload cycle time can
be set to realize automatic reading and active upload functions.
Professional interface data control technology, which
preferentially processes terminal transparent transmission
instruction frames and collector parameter setting instruction
frames issued by the IoT platform to realize the direct control of
the terminal by the master station.
2. Any Protocol / Hybrid Collection:
There is no requirement for the communication protocol of the
downstream terminal devices. It is compatible with all
communication protocols of the RS485 interface standard. Only the
baud rate of the RS485 bus is the same and the communication
address of the same type of terminal is different.
Automatically detect and process the data stream of the NB-IoT
wireless port, effectively divide the data when merging and sending
the data receiving subframes, and send the data in frames to
achieve the function of receiving / transmitting big data;
effectively overcome the NB -Limit of IoT single frame data volume
less than 512 bytes.
3. Cascade 32 Terminal / Rail Installation
Supports downlink RS485 interface (the baud rate can be set), which
can realize 1 or up to 32 terminals to actively upload the
collected data.
Using 2P rail type installation, small size and good stability.
4. AC / DC Power Supply
Working voltage AC 220V or DC12V-36V.
Collector status indications are abundant, and the status indicator
can be used to determine the working status of the collector on
site. The parameters configured when the module is powered off can
be saved and automatically restored when it is powered on again.
5. Isolated Power Supply / Tool Software
Isolation power supply: Applying the company's patented technology,
has the functions of active isolation, anti-lightning, anti-drying,
anti-high voltage, etc., effectively protecting the normal
operation of the power supply and the RS485 interface.
The set-up tool software of the PC-based collector can be used to
read / write multiple operating parameters of the collector through
the local RS485 interface. The collector has the download function
of the copying task list of the downlink terminal device,
eliminating the need for the collector to download. Multi-layer
management of terminal equipment files and tasks simplifies the
workload and operational difficulty of on-site parameter
configuration.
Main Technical Parameters
1. Electrical Parameters:
Working voltage: AC 220V+-120% 50Hz; or DC12V/24V two power supply
modes;
485 idle voltage: DC 5V;
485 load capacity: Up to 32 RS485 terminal devices (800 meters);
Power consumption: Active power ≤ 3W, Apparent power ≤ 5VA.
2. Wireless Performance Parameters:
Frequency: Telecom / Mobile / China Unicom;
Network protocol: TCP / UDP / CoAP;
Maximum output power: 23dBm ± 2dB;
Receiving sensitivity: -129dBm ± 1dB;
Antenna shape: holding antenna, optional external suction cup
antenna, equipped with standard SMA connector; built-in spring /
PCB antenna, improve the safety protection of the device
Safety Performance:
Impact voltage: 2kV;
Working pressure: 2kV.
Electromagnetic Compatibility:
Electrostatic discharge: 4kV;
Electrical fast transient: 2kV (power supply loop), /2kV (signal
loop);
Surge voltage: 2kV (differential-mode)
Application Environment:
Temperature: -20℃～+60℃;
Humidity: relative humidity ≤ 95%.
Protocol Interface
Protocol interface: Standard RS485;
Local setting port 2400bps;
Downlink terminal communication port: Baud rate can be set (eg:
1200bps, 2400bps, 4800bps, 9600bps, 19200bps).
