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