Flashcards

PLC Timers

Orlando Banks Electrical Inglês 13 flashcards

Flashcards do conjunto (13)

1advantage PLC timers instead of relay-based timing methodsEase of making settings changes.
-Ease of expansion.
High degree of accuracy and repeatability.
2Control Logix How many bits32 bit
3accumulated time value (.ACC)accumulated count of the timing function when its rung is in a true state.
4upper byte contains three control bitsEN
TT
DN
5Word 0 is the control wordLower byte is reserved for internal use by the PLC.
6Enable (EN) bitbit is true whenever the rung of the timer instruction is true. It is low whenever the rung is false.
7Timer-timing (TT) bitbit is true whenever the timer’s accumulated value is changing.
8Done (DN) bitFor TON and RTO this bit is true
whenever the accumulated value reaches the preset value
9time basetime base is used to determine the interval at which the timer will time-out
10TON instructionchanging its “contacts” after a preset duration after “energizing.
11TON instructionnon-retentive timer
12TOFwill begin its timing function whenever the input conditions to the instruction becomes false
13TOF TIMERThe done bit (DN) will remain true until the .ACC value reaches the .PRE value.

Descrição: Electrical (Programming timers) FlashCards sobre PLC Timers, criado por Orlando Banks em 31-01-2017.
Criado por: Orlando Banks
Visualizações: 4
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