Publication 1763-RM001C-EN-P - October 2009
Using High-Speed Outputs
137
•
Cleared (0) - Whenever a PTO instruction is not within the
acceleration phase of the output profile.
PTO Ramp Profile (RP)
The PTO RP (Ramp Profile) bit controls how the output pulses generated
by the PTO sub-system accelerate to and decelerate from the Output
Frequency that is set in the PTO function file (PTO:0.OF). It can be used
by an input or output instruction on any rung within the control program.
The RP bit operates as follows:
•
Set (1) - Configures the PTO instruction to produce an S-Curve
profile.
•
Cleared (0) - Configures the PTO instruction to produce a Trapezoid
profile.
PTO Idle Status (IS)
The PTO IS (Idle Status) is controlled by the PTO sub-system. It can be
used in the control program by an input instruction. The PTO sub-system
must be in an idle state whenever any PTO operation needs to start.
The IS bit operates as follows:
•
Set (1) - PTO sub-system is in an idle state. The idle state is defined
as the PTO is not running and no errors are present.
•
Cleared (0) - PTO sub-system is not in an idle state (it is running)
Sub-Element
Description
Address Data Format Range
Type
User Program
Access
RP - Ramp Profile
PTO:0/RP bit
0 or 1
control
read/write
Sub-Element
Description
Address Data Format
Range
Type
User Program
Access
IS - Idle Status
PTO:0/IS bit
0 or 1
status
read only
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