CWT m2m wireless communications system, m2m gateway solution
System Feature
- Cortex M3 32-bit ARM
- Reliable performance with built-in double watchdog, 24×7 operation
- Support signal fileter
- Support automatic network reconnection and data re-send
- Synchronize clock with multiple way, Sms, NTP, CwtIO Server
- Configurable action schedule(second, minute, day, week, month)
- Can automatically execute tasks according to preset Events
- Easy used GUI configure software for setting up to 100 parameters
- Optional inside lithium battery for power lost alarm and keep 8-20 hours working
DI feature
- Trigger dry contact(NO or NC)
DO(T) feature
- Transistor output(drive voltage=power supply voltage, Drive current≤500mA)
- Remote or local event activate DO on/off/pulse
- Remember status when power lost
DO(K) feature
- Relay NO output(load: 2A / 125VAC,220VDC)
- DO can be activated by remote or local schedule
- Remember status when power lost
AI feature
- Accept 4-20mA (option: 0-5V), Sampling frequency: 33Hz, 10-bit precision)
- Transduce 4-20mA(0-5V) to actual value
- Support offset and gain, alarm parameters, upload data setting
- Sensor disconnect alarm
SMS feature
- Preset 10 phone numbers (support distribute authority to receive sms)
- Send sms alarm when input is triggered or reach alarm level
- All alarm and recover sms text can be edited
- Query any IO channel’s status or value via sms command
- On/off/pulse output by sending sms
- Can set interval to report IO channel's status or value by sms
- Remote setting via sms commands
- Can query SIM card balance, sms forward
- Power lost and recover alarm by sending sms
- Wireless network communication
- With 2g, 3g, 4g, Wi-Fi version
- Support TCP/IP two-way communication with Max.4 servers(IP or domain)
- Events(e.g. alarm, timer) trigger upload data
- Communication protocol: Modbus TCP,http post, Cwt_IO(two-way communication)
- Transfer RS485 or RS232 Data to wireless network
Modbus feature
- Can work as a modbus master to poll salve over RS485
- Can be a I O module to be read/write by modbus master
- As modbus to gprs/3g gateway
TI feature
- Option temperature probe or temperature&humidity probe, support alarm, interlock, data communication
- Fahrenheit or centigrade units for temperature
- Support probe disconnect alarm
