JUSTIFICATION FOR SOLE SOURCE (Simplified Acquisitions …

1. PLCs were originally designed as replacements for relay logic. ANS: 2. A PLC is capable of performing only relay switching tasks. ANS: 3. The term module refers to a replaceable electronic subassembly. ANS: 4. On micro PLC systems, the power supply module can also be used to power field devices. ANS: 5. Connection to PLC field devices are ... ................
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