RS485 8 kanalų 12V DC relių Modbus RTU modulis su DIN laikikliu

DC 12V power supply
Standby current (all relays closed) 12MA, 1 relay open 40MA, 2 relays open 68MA, 3 relays open 94MA,4 relays open 122MA,5 relays open 148MA,6 relays open 174MA, 7 relays open 198MA,8 relays open 224MA
"open" "close" "Momentary" "Self-locking" "Interlock" "Delay" 6 Commands
Two instruction-control mode : MODBUS RTU command and AT command
Under the "Delay" command ,the maximum delay is 255 seconds;
Under the AT command ,the maximum delay is 9999 seconds
MODBUS commands can be made serial HyperTerminal (serial assistant) OR "Modbus Poll" Enter; AT commands can be made serial HyperTerminal (serial assistant) Enter;
Under the MODBUS command mode, it can support up to 64 devices in parallel
The default baud rate is 9600BPS. The baud rate can be selected through jumpers: 2400 4800 9600 19200BPS
Size: 120 * 88* 42mm(with Din Rail Box)
Weight: 198g(with Din Rail Box)
Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC

DIN rail Box parameters:
Product model: UM72
Color: green
Width: suitable for PCB board width UM72(72mm)
Insulation grade: flame-retardant VO grade
Backplane length: suitable for 100 mm PCB boards
Net weight: 72g
Installation: DIN35 and C45 rail

Glossary:
NO : Relay normally open contact
COM : Relay common contact
NC : Relay normally closed contact
Open : NO connection COM, NC disconnect COM
Close : NO disconnect COM, NC connection COM
Momentary : Enter the Momentary command, the Rreceiver Relay is Open, delay of 0.5 seconds after, Relay is Close;
Toggle : Enter the Toggle command, the Rreceiver Relay is Open, Enter the Toggle command again, Relay is Close;

Latched : Enter the Channel 1 Latched command, the receiver Channel 1 is Open, the Channel 2 is Close.
Enter the Channel 2 Latched command the receiver Channel 2 is Open, the Channel 1 is Close.
Enter the Channel 3 Latched command the receiver Channel 1 is Close, the Channel 2 is Close.

Delay : Enter the Delay command, the Rreceiver Relay is Open, delay of 0-9999 seconds(MODBUS command is 0-255 seconds )after, Relay is Close;
During the delay, Eter the Close command, immediately close the relay

Slave ID: A0-A5 is the slave ID, you can choose 64 different slave ID.
Under the MODBUS command mode,the slave ID must be correct

This version has 2 Command modes, MODBUS RTU Command and AT Command. 2 The default Command is the MODBUS RTU Command, compatible with older versions.
Switch to AT command by shorting the M0 pad.
The default baud rate is 9600BPS. You can also select the baud rate by shorting the M1 and M2 pads.

When controlling a module, you can use the MODUBS RTU instruction or the AT instruction. In AT command mode, the dial switch (slave address) is invalid and can only control one module at a time.

MODBUS command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control

"LOAD" may be camera, LED lights, fans, motors and other DC 12V or AC 1-250V equipment. (Note: If not DC 12V load, need another DC 12V power supply).

See Github for demo app and other info: https://github.com/Erriez/R421A08-rs485-8ch-relay-board/releases

TLDR: address: 40001-8, value: ON=256(0x0100), OFF=512(0x0200), TOGGLE(on 1sec)=768(0x300), LATCH=1024(0x400), MOMENT=1280(0x500), OFF_TIMER=1537-1791(0x0601-0x06FF)1-255sec

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