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The ______________________________ light is on when the PLC processor detects an error in the ladder logic diagram.

The number of ______________________________ indicates the number of data patterns the sequencer instruction must step through.

Excessive pollution in the environment around a PLC can damage the PLC’s ____.

The following figure displays the operation of the ____.

The normally open contact R6:0/FD will close whenever the sequencer compare (SQC) instruction is enabled.

The normally open contact R6:0/DN will close whenever the sequencer output (SQO) instruction is enabled.

The ______________________________ register is an output group register that indicates the output terminals on which data is placed.

The ______________________________ light is on when the battery on the CPU board is low.

The number of outputs that are controlled by the sequencer system can be increased by connecting sequencers in ______________________________.

PLC manufacturers use the table-to-register or file-to-word instruction instead of the ______________________________ instruction.