Load Initial Profile Values
Chapter 8
8-12
Pack/Hold Profile Block Identifier
(HPC01)
Bits 07-00 of this word identify it as the first word in a series used to
define the pack/hold profile. These bits must be set to 00001100.
We recorded these bits on Worksheet 8-B.
Profile Offset Sign
(HPC03
)
Profile offsets let you shift the amplitude of entire profiles up or down, if
necessary. The offset sign determines the direction of shift.
-BIT 15 selects the profile offset sign for hold ram (screw) pressure.
-BIT 14 selects the profile offset sign for hold cavity pressure.
-BIT 13 selects the profile offset sign for pack ram (screw) pressure.
-BIT 12 selects the profile offset sign for pack cavity pressure.
0 = positive offset (more pressure)
1 = negative offset (less pressure)
We recorded these bits = 0 for positive offset on Worksheet 8-B.
Logical Bridges
(HPC03)
Logical bridges control the action taken by the QDC module when it
completes a profile or movement.
The following bits of HPC03 determine whether the QDC module stops or
continues when entering and/or leaving the pre-decompression movement.
-BIT 09 determines if the QDC continues to the plastication profile
after the pre-decompression movement, or stops and sets outputs.
-BIT 08 determines if the QDC continues to the pre-decompression
movement after the hold profile, or stops and sets outputs.
0 = continues to next phase
1 = stops and sets outputs
We recorded these bits = 1 on Worksheet 8-B to stop and set outputs.
Determine Bit Selections
for Worksheet 8B