ATOM DTU NB CN是一款集成NB-IoT通信功能的可编程数据传输单元(DTU)。内置SIM7020C模组,覆盖多数Cat-NB频段,集成SMA外部天线接口,提升设备通信质量与信号的稳定性。与一般仅具备数据透传功能的DTU不同,ATOM DTU系列采用更为开放的架构设计。控制器ATOM LITE可根据实际业务随意修改程序,整机预留多种接口(RS485,I2C,自定义接口)供用户拓展,便于传感器与执行器的快速接入。自带导轨夹持结构,完美嵌入到各类工业控制现场。ATOM DTU NB CN非常适合应用在各种低延迟、低吞吐量应用场景(如远程控制、资产跟踪、远程监控、远程医疗、共享单车等)。
SIM7020C/适用于中国地区
RS485通信接口(带12V输入接口,内部集成DCDC降压5V)
Modbus Master/slave
信号接入能力强
AT指令控制
SIM卡类型: MicroSIM
外置天线:SMA天线接口
Grove拓展接口:
串行通信:UART 115200bps
自带导轨夹持
Cat-NB频段:
数据传输(kbps):
网络协议:
规格 | 参数 |
---|---|
通信模组 | SIM7020C |
支持Cat-NB频段 | B1/B3/B5/B8 |
网络协议 | TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/电信云/艾拉云* |
通讯方式 | UART 115200bps |
净重 | 32g |
毛重 | 40g |
产品尺寸 | 64 * 24 * 29mm |
包装尺寸 | 91 * 42 * 24.5mm |
ATOM | G22(TX) | G19(RX) | 5V | GND |
---|---|---|---|---|
SIMCOM7020C | RX | TX | VIN | GND |
ATOM | G23 | G33 | 5V | GND |
---|---|---|---|---|
RS485 | TX | RX | VIN | GND |
ATOM | G25 | G21 | 5V | GND |
---|---|---|---|---|
I2C | SDA | SCL | VIN | GND |
Init NB-IoT DTU
Power down module
Reset module
Set command echo mode
Check module status
Check single quality
Check network registration
Check GPRS network registration
Enable PDP context
CoAP connect ip port
CoAP GET url security
CoAP POST url payload content format security
CoAP PUT url payload content format security
CoAP destory
MQTT connect server port client id username password keepalive
MQTT disconnect
MQTT subscribe topic QoS
MQTT subscribe callback topic msg
MQTT unsubscribe topic
MQTT publish topic payload Qos
MQTT check connection
MQTT poll downlink message
RS485 write a line
RS485 write
RS485 write raw data create list with
RS485 read all
RS485 read characters
RS485 read line
Remain cache
Read coils slave address starting address coil qty
Read discrete inputs slave address starting address input qty
Read holding registers slave address starting address register qty signed
Read input registers slave address starting address register qty signed
Write single coil slave address output address output value
Write single register slave address register address register value signed
Write multiple coils slave address starting address output value
Write multiple register slave address starting address register value signed