The Analog Output block receives values from its upstream block and sends them to its I/O driver or OPC server. One way you might use this capability is to adjust the temperature of a tank heater by converting the heater's temperature with a Calculation block and sending the converted value to an Analog Output block. Once the value is received, the Analog Output block sends it to its I/O driver, which writes the value to the heater's I/O controller. You could also enter a value in the Initial Value field to output a temperature set point during database initialization. The following figure illustrates how to use an Analog Output block in a chain.
Another way you might use the Analog Output block is as a stand-alone block to allow an operator, other blocks, or the initialization of the database to control the values sent to the heater. The following figure shows how to use an Analog Output block as a stand-alone block.
