Rockwell-automation 1772-LV Mini-PLC - 2/15 Programmable Controller (S Manual de usuario descargar pdf (Pagina 176)

Quick Reference Section

Appendix A

A7

Table A.D

Timer

Instructions

NOTE: The timer word address, XXX, is assigned to the timer accumulated areas of the data table. To determine which addresses are valid

accumulated areas, the most significant digit in the word address must be an even number.

The time base, TB, is user-selectable and can be 1.0, 0.1, or 0.01 second. Preset values, YYY, and accumulated values, ZZZ, can vary from 000

to 999.

Bit 15 is the timed bit. Bit 17 is the enable bit.

The word address displayed will be 3 or 4 digits long depending on the data table size. When entering the word address, ust a leading zero if

necessary.

Key Symbol Instruction Name 1770-T3 Display Rung Condition Status Bit

-(TON)- Timer On Delay XXX

-(TON)-

PR YYY

AC ZZZ

When the rung is true, the timer begins to

increment the accumulated value at a rate

specified by the time base.

When the rung is false, the timer resets the

accumulated value to 000.

When the rung is true:

Bit 15 - set when AC = PR

Bit 17 - set

When the rung is false:

Bits 15 and 17 - reset

-(TOF)- Timer Off Delay XXX

-(TOF)-

PR YYY

AC ZZZ

When the rung is true, the timer resets the

accumulated value to 000.

When the rung is false, the timer begins to

increment the accumulated value.

When the rung is true:

Bit 15 - set

Bit 17 - set

Whenthe rung is false:

Bit 15 - resets when AC = PR bit 17

reset

-(RTO)- Retentive Timer XXX

-(RTO)-

PR YYY

AC ZZZ

When the rung is true, the timer begins to

incremetn the acumulated value. When

false, the accumualted value is retained.

When the rung is true:

Bit 15 - set when AC = PR

bit 17 - set

When the rung is false:

Bit 15 - no ation is taken.

Bit 17 - reset

-(RTR)- Retentive TImer

Reset

XXX

-(RTR)-

PR YYY

AC ZZZ

XXX - Word address of the retentive timer it

is resetting.

The preset and accumulated values are

automatically entered by the industrial

terminal.

WHen the rung is true, the accumulated

value and status bits are reset.

When the rung is true:

Bit 15 and 17 - reset

When the rung is false:

No action is taken.

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Rockwell-automation 1772-LV Mini-PLC - 2/15 Programmable Controller (S Manual de usuario Pagina 176

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