Stanley QB Expert User Manual

Supported Instructions and File Types
QB Expert Alpha Controller
160
Instructions Description
RTO
Retentive Timer
Use the RTO instruction to turn an output on or off after its timer has been on for a preset time
interval. The RTO instruction is a retentive instruction that begins to count millisecond intervals
when rung conditions become true. The RTO instruction retains its accumulated value when the
rung conditions become false. The Time Base must be 10 msec. The timer will not work in any
other Time Base.
This Bit Is Set When
And Remains Set Until One of
the Following
Timer Done Bit DN
(Bit 13)
accumulated value is equal to or
greater than the preset value
the appropriate RES instruction is
enabled
Timer Timing Bit
TT (Bit 14)
rung conditions are true and the
accumulated value is less than the
preset value
Rung conditions go false or when
the done bit is set
Timer Enable Bit
EN (Bit 15)
rung conditions are true
rung conditions go false or if
the timer is reset with the RES
instruction
SOR
Start of Rung
Marks the beginning of a new rung.
SUB
Subtract
Use the SUB instruction to subtract one value (source B) from another (source A) and place the
result in the destination.
TOF
Timer Off Delay
Use the TOF instruction to turn an output on or off after its rung has been off for a preset
time interval. The TOF instruction begins to count millisecond intervals when the rung makes
a true-to-false transition. As long as rung conditions remain false, the timer increments
its accumulated value (ACC) each millisecond until it reaches the preset value (PRE). The
accumulated value is reset when rung conditions go true regardless of whether the timer has
timed out. The Time Base must be 10 msec. The timer will not work in any other Time Base.
This Bit Is Set When
And Remains Set Until One of
the Following
Timer Done Bit DN
(Bit 13)
rung conditions go false and the
accumulated value is greater than
or equal to the preset value
rung conditions are true
Timer Timing Bit
TT (Bit 14)
rung conditions are false and the
accumulated value is less than the
preset value
rung conditions go true or when
the done bit is set
Timer Enable Bit
EN (Bit 15)
rung conditions are false rung conditions go true

Stanley QB Expert Specifications

General

Brand	Stanley
Model	QB Expert
Category	Controller
Language	English