5.0 MATRIX PIN HEADER PROGRAMMING
5-1.1 Example 1 Clearance Comparator
It is desired to measure the clearance between a given I.D. and O.D. In this example,
Air/Electronic modules will be used, but the same principles apply to any other module or com-
bination of modules previously discussed. The setup will require three Trendsetter™ columns.
Column 1 Air/Electronic E8023 - O.D. Measurement
Column 2 Air/Electronic E8023 - I.D. Measurement
Column 3 Sum/Difference E8026 - Clearance
Column 1 will measure and display the O.D. of the piece part using an air ring. Likewise, the I.D.
measurement will be displayed on column 2 using an air plug. Column 3 will subtract the I.D.
from the O.D. and display the difference. This will be defined as clearance.
The first step will be to program the E8023. Column 1 is to measure O.D. As the piece part size
increases, place the polarity pin head of the module, so as to cause the bargraph to move in a
positive or upscale direction.
It is assumed that the E8023 mag, and zero have been calibrated to masters, and the inch/mm
pin header is already set to the desired units. Because all of the ten I/O buss lines are unused,
the output of this module (O.D.), will be arbitrarily placed on buss line 1 by placing a program-
ming jumper over the matrix pin header stenciled with the number (1) and the center post
between (1) and (2).
Column 2 is measuring I.D. As the I.D. of the piece part increases, place the polarity pin header
so that the bargraph also moves is a positive upscale direction.
The I.D. signal of this module will be placed on buss 2 by placing a programming jumper over
(2) and the center post between (1) and (2).
The O.D. signal is now on buss 1 and the I.D. signal is on buss 2. All that is necessary is to pick
these signals off and route them to the proper input ports of the E8026 module.
Step 2
As stated in the above paragraphs, the I.D. will be subtracted from the O.D. The E8026 will be
placed in the (A-B) mode of operation. In this mode all “A” labeled ports (A1, A2, A3) will be
non-inverting. As a positive signal is injected into the port, the display will respond in a positive
or upscale direction. Likewise, all “B” labeled ports (B1, B2, B3) become inverted. If a positive
signal is injected into these ports, the display responds in a negative or downscale
direction.Therefore the O.D. signal on buss 1 will be routed to the A group, the I.D. signal on
buss 2 to the B group.
Since Air/Electronics are used, select high level inputs (A1) and (B6) to properly attenuate the
signal. Reverse program the matrix pin header by placing a jumper between (1) and the center
post of the group labeled A1. This programs the O.D. signal into port A1. Likewise, you are able
to reverse program the matrix pin header labeled B6 by placing a program jumper between (2)
and the center post. This places the I.D. signal into port B6. Leave unused pin headers in their
open positions. This last move avoids programming errors, and completes the programming.
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