User guide

Using Basic Instructions
6–5
Output Energize (OTE)
Use an OTE instruction in your ladder program to turn On a bit when rung
conditions are evaluated as true.
An example of a device that turns on or off is an output wired to a pilot light
(addressed as O0:0/4).
OTE instructions are reset when:
• You enter or return to the REM Run or REM Test mode or power is restored.
• The OTE is programmed within an inactive or false Master Control Reset
(MCR) zone.
Note A bit that is set within a subr outine using an OTE instruction r emains set until the
subr outine is scanned again.
Output Latch (OTL) and Output Unlatch (OTU)
OTL and OTU are retentive output instructions. OTL can only turn on a bit, while
OTU can only turn off a bit. These instructions are usually used in pairs, with both
instructions addressing the same bit.
Your program can examine a bit controlled by OTL and OTU instructions as often
as necessary .
Under fatal error conditions, physical outputs are turned off. Once the error
conditions ar e clear ed, the contr oller r esumes operation using the data table
value of the operand.
Programming
Execution Times
(µsec) when:
True False
4.43 4.43
( )
False
4.97
Execution Times
(µsec) when:
True
3.16
OTL
4.97 3.16OTU
(L)
(U)