SUMMARY

• Latch and unlatch instructions will hold outputs on, even when the power is turned off.

• Timers can delay turning on or off. Retentive timers will keep values, even when inactive. Resets are needed for retentive timers.

• Counters can count up or down.

• When timers and counters reach a preset limit the DN bit is set.

• MCRs can force off a section of ladder logic.

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