GPRS modbus RTU modem, rs485 modbus rtu gateway
System Feature
- Adopted highly integrated industrial 32-bit ARM MCU
- 24×7 working, soft and hardware Double watchdog
- With signal filtering mechanisms
- Stable reconnection strategy for data transmit
- Update RTC automatically or manually, clock source support Sms, NTP, CwtIO Server
- Automatically execute preset task by schedule(second, minute, day, week, month)
- Event-based linkage programming, e.g. alarm linkage output
- Provide console utility for visual programming over 100 parameters
- Optional inside lithium battery for power lost alarm and keep 8-20 hours working
DI feature
- Monitor dry contact(NO or NC)
DO(T) feature
- Open-collector output(drive voltage=power supply voltage, Drive current≤500mA)
- Remote or local event activate DO on/off/pulse
- Remain down status when power lost
DO(K) feature
- Relay NO output(load: 2A / 125VAC,220VDC)
- on/off/pulse DO by remote control or local event
- Remain down status when power lost
AI feature
- Accept 4-20mA (option: 0-5V), Sampling frequency: 33Hz, 10-bit precision)
- Convert 4-20mA(0-5V) to physical value
- Can set parameters for value processing, alarm, data transmission
- Detect connect or disconnect to alarm
SMS feature
- Can add 10 administrator numbers for alarm and remote control
- Any device alarm status can be sent by sending sms
- All alarm and recover sms text can be edited
- Remote get device status or value by sending sms command
- Control output via sms command
- Can set interval to report IO channel's status or value by sms
- Remote setting via sms commands
- Forward simcard overdue sms to admin
- Sms alar for power lost and recover
Wireless network communication
- Option network: cellular(2g/3g/4g) or Wi-Fi
- Support TCP/IP two-way communication with Max.4 servers(IP or domain)
- Events(e.g. alarm, timer) trigger upload data
- Communicate with server by optional Cwt_IO, Modbus TCP, http post protocol
- Can forward data between wireless network with RS485 or RS232
Modbus feature
- Can be modbus master read/write salve over RS485
- As a RS485 I O module to be polled by modbus master
- Support Modbus RTU to TCP convert over Ethernet or GPRS/3G
