Allen-Bradley Logix5000

Rockwell Automation Publication 1756-RM003N-EN-P - October 2011 129
Timer and Counter Instructions (TON, TOF, RTO, TONR, TOFR, RTOR, CTU, CTD, CTUD, RES) Chapter 3
Timer On Delay with Reset
(TONR)
The TONR instruction is a non-retentive timer that accumulates time when
TimerEnable is set. This instruction is available in relay ladder as two separate
instructions:
· TON (See page 116
).
· RES (See page 153
).
Operands:
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Function Block
FBD_TIMER Structure
Variable Type Format Description
TONR tag FBD_TIMER Structure TONR structure
Operand Type Format Description
TONR tag FBD_TIMER Structure TONR structure
TONR(TONR_tag);
Input Parameter Data Type Description
EnableIn BOOL Function Block
If cleared, the instruction does not execute and outputs are not updated.
If set, the instruction executes.
Default is set.
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No effect. The instruction executes.
TimerEnable BOOL If set, this enables the timer to run and accumulate time.
Default is cleared.
PRE DINT Timer preset value. This is the value in 1ms units that ACC must reach before timing is finished. If
invalid, the instruction sets the appropriate bit in Status and the timer does not execute.
Valid = 0 to maximum positive integer
Reset BOOL Request to reset the timer. When set, the timer resets.
Default is cleared.
Output Parameter Data Type Description
EnableOut BOOL The instruction produced a valid result.
ACC BOOL Accumulated time in milliseconds.
EN BOOL Timer enabled output. Indicates the timer instruction is enabled.
TT BOOL Timer timing output. When set, a timing operation is in progress.
DN BOOL Timing done output. Indicates when the accumulated time is greater than or equal to the preset value.
Status DINT Status of the function block.
InstructFault (Status.0) BOOL The instruction detected one of the following execution errors. This is not a minor or major controller
error. Check the remaining status bits to determine what occurred.
PresetInv (Status.1) BOOL The preset value is invalid.