Publication 1763-RM001C-EN-P - October 2009
130 Using High-Speed Outputs
– Jog Pulse (JP) bit must be off
– Jog Continuous (JC) bit must be off
– Enable Hard Stop (EH) bit must be off
– Normal Operation (NS) bit must be off
– The output cannot be forced
• The rung it is on must transition from a False state (0) to a True state
(1).
Momentary Logic Enable Example
In this example, the rung state is a momentary or transitional type of
input. This means that the false-to-true rung transition enables the PTO
instruction and then returns to a false state prior to the PTO instruction
completing its operation.
If a transitional input to the PTO instruction is used, the Done (DN) bit
turns on when the instruction completes, but only remains on until the
next time the PTO instruction is scanned in the user program. The
structure of the control program determines when the DN bit goes off. So,
to detect when the PTO instruction completes its output, you can monitor
the Done (DN), Idle (ID), or Normal Operation (NO) status bits.
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive
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