Taidacent 2 Way Modbus Rtu Relay Module Switching Input and Output RS485/TTL Communication Modbus Controlled Modbus Relay Board

Description

Product parameters 1. Onboard mature and stable 8-bit MCU and MAX485 level conversion chip 2. Communication protocol: support standard Modbus RTU protocol 3. Communication interface: support RS485/TTL UART interface 4. Communication baud rate: 4800/9600/19200, default 9600bps, support power-down save 5. Optocoupler input signal range: DC3.3-30V (this input is not available for relay control) 6. Output signal: relay switch signal, support manual, flash word, flash mode, flash word / flash delay base is 0.1S, maximum can be set flash word / flash time is 0xFFFF * 0.1S = 65535 * 0.1 S=6553.5S 7. Device address: range 1-255, default 255, support power-down save 8. Onboard 1 channel 5V, 10A/250VAC 10A/30V DC relay, can continuously pick up 100,000 times, with diode effluent protection, short response time 9. Onboard relay switch indicator 10. Power supply voltage: DC7-24V with input anti-collision protection Pin descripton 1, VCC, GND: DC7-24V power input 2, DC3.3-30V optocoupler signal input: IN1: channel 1 positive IN2: channel 2 positive GND_IN: common terminal 3, A+, B-: RS485 communication interface, A+, B- respectively connected to the external control terminal A+, B- 4, relay 1 switch signal output NC1,: Normally closed end, shorted to COM1 before the relay is closed, suspended after suction; COM1: common end; NO2: normally open end, the relay is suspended before being sucked, and shorted after COM1. 5, relay 2 switch signal output NC2,: Normally closed, shorted to COM2 before the relay is closed, suspended after suction; COM2: common end; NO2: normally open end, the relay is suspended before being sucked, and shorted after connecting with COM2. 6, relay indicator: light up when the relay is closed 7, GND, RXD, TXD: TTL level UART communication interface, GND, RXD, TXD are connected to the external control terminal GND, TXD, RXD