10-27-2020, 01:46 PM
1. what's your KC868-H32 relay board's IP and Port?
2. Do you KC868-H32 relay board set the network work mode = "TCP Server"?
if you connect KC868-H32 with KC868-COL logical controller by RS232 , it's no problem. because KC868-H32 relay board can work by ethernet and RS232 at the same time. You Node-Red just send command by ethernet is ok.
At last ,make sure all your device and your PC and your Node-Red (maybe in Raspberry Pi) in one network with your router.
2. Do you KC868-H32 relay board set the network work mode = "TCP Server"?
if you connect KC868-H32 with KC868-COL logical controller by RS232 , it's no problem. because KC868-H32 relay board can work by ethernet and RS232 at the same time. You Node-Red just send command by ethernet is ok.
At last ,make sure all your device and your PC and your Node-Red (maybe in Raspberry Pi) in one network with your router.