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Control Module Configuration
5.3.4 Scan Analysis Mode Selection
The control module may be programmed, if desired, for any one or two of seven Scan
Analysis (measurement) Modes. Each selected mode may be assigned individually to
an output (see section 5.3.5 or 5.3.6). The beams in the array are numbered in
sequence, with beam #1 located at the cabled end of the emitter and the receiver.
"Beam Location" Modes
• First Beam Blocked (FBB): The control module identifies the location of the First
Beam Blocked.
• First Beam Made (FBM): The control module identifies the location of the First
Beam Made (unblocked).
• Last Beam Blocked (LBB): The control module identifies the location of the Last
Beam Blocked.
• Last Beam Made (LBM): The control module identifies the location of the Last
Beam Made (unblocked).
• Middle Beam Blocked (MBB): The control module identifies the location of the
Middle Beam Blocked, midway between the first and last beams blocked.
"Beam Total" Modes
• Total Beams Blocked (TBB): The control module totals the number of blocked
beams.
• Total Beams Made (TBM): The control module totals the number of made
(unblocked) beams.
• Contiguous Beams Blocked (CBB): The control module identifies the largest number
of consecutively blocked beams.
• Contiguous Beams Made (CBM): The control module identifies the largest number
of consecutively made beams.
• Transitions (TRN): The control module counts changes from blocked to clear and
clear to blocked. For instance, if beams 6-34 are blocked, then there is a clear-to-
blocked transition from beam 5 to beam 6, and a blocked-to-clear transition from
beam 34 to beam 35. Transition mode can be used to count objects within the array.
The Analysis Mode(s) programmed may be assigned to any one of the available
outputs (see Figure 5-18). Each output can be set for MEAS1, MEAS2, MEAS1
Inverted or MEAS2 Inverted.
5.3.5 Analog Output Configuration (Analysis Mode Assignment)
Analog outputs #1 and #2 may each be assigned to one of the analysis modes
described in section 5.3.4. When the selected Scan Analysis Mode involves first or
last beam blocked or made (unblocked), the assigned output will vary in proportion to
the beam number identified during a scan. When the Scan Analysis Mode involves
total beams blocked or made, that assigned output will vary in proportion to the total
beams counted during a scan.
Note that the pull-down menus used for assignment of the Scan Analysis Modes to
the analog outputs include two "Inverted" selections. When either MEAS1 Inverted or
MEAS2 Inverted is selected, that analog output will decrease as the measurement
mode value increases. An inverted output will be at full scale (Span value) when the
scan analysis value is zero; and at maximum scan analysis value, the output will be at
the Null value.
26
P/N 64118 rev. B
Figure 5-16. Scan Analysis Mode Selection
(PSF Configuration screen)
Receiver
Last Beam Made (LBM)
First Beam Made (FBM)
Emitter
48
In Last Beam Made mode,
40
last beam is #37 of 48
32
24
In First Beam Made mode,
16
first beam is #26 of 48
8
Receiver
Last Beam Blocked (LBB)
First Beam Blocked (FBB)
Emitter
48
In Last Beam Blocked mode,
40
last beam is #43 of 48
32
In First Beam Blocked mode,
24
first beam is #15 of 48
16
8
Receiver
Total Beams Made (TBM)
Total Beams Blocked (TBB)
Emitter
In Total Beams Made mode,
48
34 of 48 possible beams are
40
made
32
In Total Beams Blocked mode,
24
14 of 48 possible beams are
16
blocked
8
Figure 5-17. Examples of MINI-ARRAY scan
analysis modes
Figure 5-18. Assigning an Analysis Mode to
each Analog Output
(PSF Configuration screen)
Banner Engineering Corp.
Minneapolis, U.S.A.
•
www.bannerengineering.com • Tel: 763.544.3164
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