Control & Measurement EUPP Features The EUPP system has the following features, not all feature are available in all configurations; * PIC16F877 micro-controller, clocked at 20 MHz. * Customer application stored in 8K non volatile Flash memory, no need to reload program after a power supply interruption. * 368 bytes of RAM. * 256 bytes of EEPROM data memory, program can read and write to this memory with data retention of greater than forty years. * Wide input voltage on board power supply (7V to 30V) * Up to five analogue inputs (10 bits), precision analogue input mode where up to two analogue inputs can be allocated to on board voltage reference to provide very accurate analogue readings. * RS232 port with hardware handshaking to provide communication link to computers, or other equipment such as weighing scales or can be used to link EUPP systems together to create more complex systems. * Up to 6 fast response digital inputs which can be used to generate instant interrupts, to immediately get the system to respond to changes in plant status. * Up to 16 general purpose digital inputs. * All digital inputs are protected by opto-isolators, whose input circuit is tailored to individual customers input voltage ranges. * 34 element LED display which can be used to drive various types of LED arrays or a standard 4 digit display made up of four 0.8 inch 7 segment LED displays. This standard off the shelf display also includes additional LED's (one red and one green) which can be used to indicate plant status. * Up to 24 digital outputs, where switching is provided via FET transistors and are capable of switching 30V up to 8A (depending on digital output board used and where necessary additional heat sinking). A standard digital output board is available for general purpose switching. If full isolation is required an isolated digital output board with it's own power supply which develops on board control voltages from a plant side DC supply.       *   Pulse wave modulated (PWM) output, suitable for use as motor speed control or light brightness control. The PWM     output is provided via a FET Transistor. If full isolation is required an isolated PWM board with it's own power supply   which develops on board control voltages from a plant side DC supply.