Allen-Bradley MicroLogix 1400 User Manual

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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Allen-Bradley MicroLogix 1400 Specifications

General

Processor	32-bit
Expansion Modules	Up to 7 expansion I/O modules
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Communication Ports	Ethernet, RS-232/RS-485 combo port
Controller Type	Programmable Logic Controller (PLC)
Series	MicroLogix
Digital Outputs	12
Analog Inputs	6 (embedded)
Analog Outputs	2 (embedded)
High-Speed Counter	6 high-speed counters
Pulse Output	2 (embedded)
Ethernet Port	Yes