Product 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