Publication 1766-RM001A-EN-P - October 2008
146 Using High-Speed Outputs
PTOX Done (DN)
The PTOX DN (Done) bit is controlled by the PTO sub-system. It can be
used by an input instruction on any rung within the control program. The
DN bit operates as follows:
• Set (1) - Whenever a PTO instruction has completed its operation
successfully.
• Cleared (0) - When the rung the PTO is on is false. If the rung is
false when the PTO instruction completes, the Done bit is set until
the next scan of the PTO instruction.
PTOX Decelerating Status (DS)
The PTOX DS (Decel) bit is controlled by the PTOX sub-system. It can be
used by an input instruction on any rung within the control program. The
DS bit operates as follows:
• Set (1) - Whenever a PTO instruction is within the deceleration
phase of the output profile.
• Cleared (0) - Whenever a PTO instruction is not within the
deceleration phase of the output profile.
TIP
Forcing an output controlled by the PTO while it is running stops all output
pulses and causes a PTO error.
Sub-Element
Description
Address Data Format Range Type User Program
Access
DN - Done PTOX:0/DN bit 0 or 1 status read only
Sub-Element
Description
Address Data Format Range Type User Program
Access
DS - Decelerating Status PTOX:0/DS bit 0 or 1 status read only
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