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
