1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

Using High-Speed Outputs 161PWMX Output (OUT)ElementDescriptionOUT - PWM OutputAddressPWMX:0.OUTData Range Type User Program AccessFormatword (INT) 2…4 status read onlyThe PWMX OUT (Output) variable defines the physical output that thePWM instruction controls. This variable is set within the function filefolder when the control program is written and cannot be set by the userprogram. The outputs are defined as O0:0/2, O0:0/3 or O0:0/4 as listedbelow:• O0:0.0/2: PWM modulates output 2 of the embedded outputs.• O0:0.0/3: PWM modulates output 3 of the embedded outputs.• O0:0.0/4: PWM modulates output 4 of the embedded outputs.PWMX Decelerating Status (DS)Element Description Address Data Format Range Type User ProgramAccessDS - Decelerating Status PWM:0/DS bit 0 or 1 status read onlyThe PWMX DS (Decel) bit is controlled by the PWM sub-system. It can beused by an input instruction on any rung within the control program. TheDS bit operates as follows:• Set (1) - Whenever a PWM output is within the deceleration phaseof the output profile.• Cleared (0) - Whenever a PWM output is not within the decelerationphase of the output profile.PWMX Run Status (RS)Element Description Address Data Format Range Type User ProgramAccessRS - PWM Run Status PWMX:0/RS bit 0 or 1 status read onlyThe PWMX RS (Run Status) bit is controlled by the PWM sub-system. Itcan be used by an input instruction on any rung within the controlprogram.Publication 1766-RM001A-EN-P - October 2008