plc modbus rtu gateway, ethernet modbus rtu gateway
System Feature
- Cortex M3 32-bit ARM
- 24×7 working, soft and hardware Double watchdog
- Support signal fileter
- Stable reconnection strategy for data transmit
- Synchronize clock with multiple way, 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 battery that life is 8-20 hours, cellular module Intelligent sleep when power lost
DI feature
- Trigger dry contact(NO or NC)
DO(T) feature
- Relay drivable 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 contact output(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)
- Convert 4-20mA(0-5V) to physical value
- Support offset and gain, alarm parameters, upload data setting
- 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
- All alarm and recover sms text can be edited
- Query any IO channel’s status or value via 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
- Can query SIM card balance, sms forward
- Power lost and recover alarm by sending sms
Wireless network communication
- Option network: cellular(2g/3g/4g) or Wi-Fi
- TCP/IP connect at most 4 servers(support Static IP address or domain)
- Support post or respond mode for data communication
- 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 work as a modbus master to poll 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
