m2m wireless communications system, sim machine to machine

System Feature

• Cortex M3 32-bit ARM
• Double watchdog to ensure stability
• With signal filtering mechanisms
• Network-reconnect and retransmission to ensure data accurately transmit
• Automatically or manually update interior clock by sms or NTP or server
• Automatically execute preset task by schedule(second, minute, day, week, month)
• Support Interlock programming, Event trigger
• Easy used GUI configure software for setting up to 100 parameters
• Optional exterior rechargable battery for 8-20 hours working when power lost

DI feature

• Accept NO or NC dry contact

DO(T) feature

• Transistor output(drive voltage=power supply voltage, Drive current≤500mA)
• Remote or local event activate DO on/off/pulse
• Status memory function for power lost

DO(K) feature

• Relay output(NO, contact load: 2A / 125VAC,220VDC)
• DO can be activated by remote or local schedule
• Status memory function for power lost

AI feature

• 4-20mA (option: 0-5V) in, Sampling frequency: 33Hz, 10-bit precision)
• Transduce 4-20mA(0-5V) to actual value
• Can set parameters for value processing, alarm, data transmission
• Detect connect or disconnect to alarm

SMS feature

• Preset 10 phone numbers (support distribute authority to receive sms)
• Send sms alarm when input is triggered or reach alarm level
• Customizable sms messages, like alarm, receove, report
• Can send sms command to request any channel status or value
• Activate output by sending sms
• Sms report any IO channel’s status or value on schedule
• Remote update parameters by sms
• Can query SIM card balance, sms forward
• Power lost and recover alarm by sending sms

Wireless network communication

• Optianal onboard GPRS, 3g, 4g, Wi-Fi module
• TCP/IP connect at most 4 servers(support Static IP address or domain)
• Support post or respond mode for data communication
• Support http post, Modbus TCP, CWT protocol over cellular or Wi-Fi
• Support two-way data transparent transmission with RS485 or RS232

Modbus feature

• Can be modbus master read/write salve over RS485
• Can work as a modbus slave to be read/write by master(HMI, SCADA etc.)
• Support Modbus RTU to TCP convert over Ethernet or GPRS/3G