Manual

2–11Command Word/Bit Descriptions
Publication 1771-6.5.126 – March 1998
HDC
Unselected Valve Set-output Values
When the module starts the Hold Profile, it:
• ignores the unselected value of the selected output
• uses ramp rates HDC17-20 and HDC25-28 to ramp unselected outputs
• sets its unselected outputs to the values listed below
Word Description
HDC09 Output #1 Set-output Value during Profile [19]
HDC10 Output #2 Set-output Value during Profile [19]
HDC11 Output #3 Set-output Value during Profile [19]
HDC12 Output #4 Set-output Value during Profile [19]
HDC13-16 RFU
Output Ramp Rates
The module uses the following ramp rates when moving its outputs
from setpoint to setpoint during the Hold Profile. The module
interprets a ramp rate of zero as a step function ramp (ramp disable).
Word Description
HDC17 Output #1 Acceleration Ramp Rate during Profile [20]
HDC18 Output #2 Acceleration Ramp Rate during Profile [20]
HDC19 Output #3 Acceleration Ramp Rate during Profile [20]
HDC20 Output #4 Acceleration Ramp Rate during Profile [20]
HDC21-24 RFU
HDC25 Output #1 Deceleration Ramp Rate during Profile [20]
HDC26 Output #2 Deceleration Ramp Rate during Profile [20]
HDC27 Output #3 Deceleration Ramp Rate during Profile [20]
HDC28 Output #4 Deceleration Ramp Rate during Profile [20]
HDC29-32 RFU
End of Profile Set-output Values
When the module completes the Hold Profile and HPC03-B08 is SET, it:
• sets status bit SYS22-B06
• uses ramp rates HDC17-20 and HDC25-28 when changing outputs
• sets its outputs to the following values
Word Description
HDC33 Output #1 Set-output Value at End of Profile [19]
HDC34 Output #2 Set-output Value at End of Profile [19]
HDC35 Output #3 Set-output Value at End of Profile [19]
HDC36 Output #4 Set-output Value at End of Profile [19]
HDC37-40 RFU