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Output 1

14-8 MS-880 Industrial Long Range Scanner User’s Manual

14–Discrete I/0

Trend Analysis Mode

Mismatch

Noread

Reads per Trigger Threshold

Definition: Sets the trend condition (Mismatch, Noread, or Reads/Trigger) that

will activate the output.

Parameters associated with Trend Analysis Mode are Number To Out-

put On and Trigger Evaluation Period. The Number To Output On set-

ting allows the user to select the number of times that the selected trend

condition occurs before activating the output. Trigger Evaluation Period

sets the number of triggered events to evaluate for trend condition.

Example:

Trend analysis mode = Noread

Number to Output On =4

Trigger Evaluation Period=25

In this example, the scanner will activate the output when 4 noreads

occur within a period of 25 trigger events (read cycles).

Usage: Useful in cases in which the user doesn’t want to shut down for one

condition but wants to monitor quality and read conditions.

Serial Cmd: <K720,output on,active state,pulse width,output mode,trend analysis

mode,trigger evaluation period,number to output on,reads per trigger

threshold>

Default: Noread

Options: 0 = Mismatch

1 = Noread

2 = Reads/Trigger

Definition: Output will be activated when the number of Mismatches equals the

value entered for Number to Output On within the trigger window

selected in Trigger Evaluation Period.

Definition: The output will be activated when the number of noreads equals the

value entered for Number to Output On within the trigger window

selected in Trigger Evaluation Period.

Definition: The Reads/Trigger trend monitors the number of good reads per trig-

gered read cycle. If the number of Reads/Trigger falls below the

value entered in Reads per Trigger Threshold, a trend condition is

set. If this trend condition matches the number set in Number to Out-

put On, the output will be activated.

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Microscan MS-4X Manuel d'utilisateur Page 214