Timer And Counter Instructions - Allen-Bradley Logix5000 Reference Manual

If you want to
Time how long a timer is enabled
Time how long a timer is disabled
Accumulate time
Time how long a timer is enabled with built-in reset
in function block
Time how long a timer is disabled with built-in reset
in function block
Accumulate time with built-in reset in function block
Count up
Count down
Count up and count down in function block
Reset a timer or counter

Timer and Counter Instructions

(TON, TOF, RTO, TONR, TOFR, RTOR, CTU, CTD, CTUD, RES)
Topic
Timer On Delay (TON)
Timer Off Delay (TOF)
Retentive Timer On (RTO)
Timer On Delay with Reset (TONR)
Timer Off Delay with Reset (TOFR)
Retentive Timer On with Reset (RTOR)
Count Up (CTU)
Count Down (CTD)
Count Up/Down (CTUD)
Reset (RES)
Timers and counters control operations based on time or the number
of events.
Use this instruction
TON
TOF
RTO
TONR
TOFR
RTOR
CTU
CTD
CTUD
RES
The time base for all timers is 1 ms.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
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Relay ladder
Relay ladder
Relay ladder
Structured text
Function block
Structure text
Function block
Structured text
Function block
Relay ladder
Relay ladder
Structured text
Function block
Relay ladder
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