With T100MD100, MD-EXP4040, and MD-HMI, are there any issues with usung 12 volt power. On the MD-HMI, the 15 watt resistor for backlight, should it be a different value?
The application is controlling a tri-fuel standby generator, and the backup PLC power will be the generator's 12 volt battery. Will brief interuptions in the PLC power , like when a relay (coil from 120 volt power) drops to the battery supply. The brief period of inactivity is not an issue as long as the PLC at worst resets and then continues. Is there a better way to handle the power change over?