21.1 ANALOG INPUTS 413

21.2 ANALOG OUTPUTS 418

21.3 CONTROLLOGIX HARDWARE 420

21.4 PLC-5 HARDWARE 422

21.4.1 PULSE WIDTH MODULATED (PWM) OUTPUTS 425

21.4.2 SHIELDING 427

21.5 DESIGN CASES 428

21.5.1 Process Monitor 428

21.6 SUMMARY 429

21.7 PRACTICE PROBLEMS 429

21.8 ASSIGNMENT PROBLEMS 430

21.1 PRACTICE PROBLEM SOLUTIONS 431