Manual for D18994

[rossko57]

Notes on D18994 linked here

[Solved] ModBus and cheap 4 relay module (D18994)

Hello ! I have a cheap relays module with ModBus support integrated. I`ve tested it with my debug scripts and it works well. Here is my short manual about it: link (russian lang). Relays on this card could not be accessed as coils and another scheme used instead. For example if i need to enable relay number 2 i should write value 0x0200 to holding register 2, and i should write 0x0100 if it need to be changed back to open state. My question is: how to use such kind of control scheme as reular…

If you plan on using this with openHAB you would need to adapt the configuration for v2 of Modbus binding.

[SOLVED] How to config Modbus 8 relay board

Hello every one! Begginner here This is my first question here. I have configured a SDM-630 watt metter and an EP-SOLAR charge controller over paper UI Now im trying to configure a Modbus Relay board.After 2 days trying to configure it over Paper UI, i stucked at a point of the transformations. I can read the relays state, i can turn it on by the switch on Paper UI but, it dont turn of in the switch I have read many tutorials and infos here about modbus binding, but really dont understand. M…