Rockwell Automation 1771-QDC, D17716.5.85(Passport) MNL. PLASTIC MOLDING MODULE User Manual

Page 99

Advertising
background image

Load Initial Profile Values

Chapter 8

8-4

Injection Profile Block Identifier

(IPC01)
Bits 07-00 of this word identify it as the first word in a series used to
define the injection profile. These bits must be set to 00001001.

We recorded these bits on Worksheet 8-A.

Velocity Units

(IPC03)
The following bit determines units of measure for injection velocity values.

-BIT 14 selects units of measure.

0 = Percent velocity
1 = Inches or millimeters per second

We recorded B14 = 1 for units per second on Worksheet 8-A.

Profile Offset Sign

(IPC03)
Profile offsets let you shift the amplitude of entire profiles up or down, if
necessary. The offset sign determines the direction of shift.

-BIT 13 controls the direction of pressure profile offset.

0 = Pressure offset is positive (more pressure)
1 = Pressure offset is negative (less pressure)

We recorded B13 = 0 for positive offset on Worksheet 8-A.

-BIT 12 controls the direction of velocity profile offset.

0 = Velocity offset is positive (more velocity)
1 = Velocity offset is negative (less velocity)

We recorded B12 = 0 for positive offset on Worksheet 8-A.

Profile Algorithm

(IPC03)
The following bits determine the type of injection profile.

-BITS 01 and 00 select the algorithm for the injection profile.

00 = Velocity vs. Position
01 = Velocity vs. Position (pressure-limited)
10 = Pressure vs. Position
11 = Pressure vs. Time

We recorded B01 = B00 = 1 for pressure vs. time on Worksheet 8-A.

Important: All other bit selections in IPC03 should be zero.

Determine Bit Selections

for Worksheet 8ĆA

Advertising