Allen-Bradley 1763-L16BBB - Page 146

Publication 1763-RM001C-EN-P - October 2009
146 Using High-Speed Outputs
PTO Jog Pulse (JP)
The PTO JP (Jog Pulse) bit is used to instruct the PTO sub-system to
generate a single pulse. The width is defined by the Jog Frequency
parameter in the PTO function file. Jog Pulse operation is only possible
under the following conditions:
• PTO sub-system in idle
• Jog continuous not active
• Enable not active
The JP bit operates as follows:
• Set (1) - Instructs the PTO sub-system to generate a single Jog Pulse
• Cleared (0) - Arms the PTO Jog Pulse sub-system
PTO Jog Pulse Status (JPS)
The PTO JPS (Jog Pulse Status) bit is controlled by the PTO sub-system. It
can be used by an input instruction on any rung within the control
program to detect when the PTO has generated a Jog Pulse.
The JPS bit operates as follows:
• Set (1) - Whenever a PTO instruction outputs a Jog Pulse
• Cleared (0) - Whenever a PTO instruction exits the Jog Pulse state
Sub-Element
Description
Address Data Format Range Type User Program
Access
JP - Jog Pulse PTO:0/JP bit 0 or 1 control read/write
Sub-Element
Description
Address Data
Format
Range Type User Program
Access
JPS - Jog Pulse Status PTO:0/JPS bit 0 or 1 status read only
TIP
The output (jog) pulse is normally complete with the JP
bit set. The JPS bit remains set until the JP bit is cleared
(0 = off).
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