Analog input and output module is good or bad

analog input module: Give a standard signal, look up the value of the mining right.
analog output module: output a value, using the following multi-meter.
If the range is consistent with the input connected to the output measured on the country, the bus portion of the output module to burn, so other channels can not be used is a continuous analog signal input and output, such as 4-20ma, 0-5v or 0 -10v, etc., than the column adjusting solenoid valve opening or used for any other use!