Holding! Heading 2 Title Sul 1. In rack based PLC system the I/O modules are always permanently attached to the rack. True False 2. The-- for a particular PLC is the decision making performed? Processor module Input module Output module Power supply module 3. In which module of the PLC is the decision making performed Processor module Input module Output module Power supply module 4. PLC modules exist that have both inputs and outputs? True False Please help. word English (United States