Firmware

A program stored on silicon memory chips. This type of silicon chip is also known as Erasable Programmable Read-Only Memory (EPROM). There are different types of firmware:

• Logical firmware is designed to accept engineering values (Deg F, kPa, psi) for parameters in PPCL commands.
• Physical firmware is designed to accept values for parameters in PPCL commands derived from formulas and calculations.
• Unitary firmware that uses a subset of PPCL commands found in logical firmware.
• CM firmware used in Controller Modules.