modbus tcp to rtu gateway, wifi modbus gateway

System Feature

• Adopted highly integrated industrial 32-bit ARM MCU
• Reliable performance with built-in double watchdog, 24×7 operation
• Dual digital filters for anti-noise
• Stable reconnection strategy for data transmit
• Update RTC automatically or manually, clock source support Sms, NTP, CwtIO Server
• Configurable action 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

• Relay drivable output(drive voltage=power supply voltage, Drive current≤500mA)
• on/off/pulse DO by remote control or local event
• 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
• Status memory function for 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)
• Any device alarm status can be sent by sending sms
• 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
• Support power lost sms alarm and recover sms(works with inside battery)

Wireless network communication

• With 2g, 3g, 4g, Wi-Fi version
• Support TCP/IP two-way communication with Max.4 servers(IP or domain)
• Support post or respond mode for data communication
• Communicate with server by optional Cwt_IO, Modbus TCP, http post protocol
• Support two-way data transparent transmission with RS485 or RS232

Modbus feature

• polling salve over RS485 with modbus rtu protocol
• As a RS485 I O module to be polled by modbus master
• As modbus to gprs/3g gateway