Impulse MAQ20-940 Configuration - Manual (Page 20)

MAQ
®
20 Configuration Software Tool User Manual
14
7.3 Special Function Panels:
Special functions operate using preset channels associated with one of two Timers: Channels 0, 1, 5 and
6 are associated with Timer 0 and Channels 2, 3, 7 and 8 are associated with Timer 1. Each of the two
timers can run any one of the seven special functions at any given time. The panel displays the special
functions selected for each of the two timers. Below is a description of the Special Functions that can be
run on the Discrete Input / Output Module.
7.3.1 Pulse / Frequency Counter Function
Uses input channel 5 for Timer 0 and input channel 7 for Timer 1.
Select rising or falling edge
Pulse Count = Number of pulses since last enable or last clearing of the counter
RPM
Specify ticks per revolution for use with RPM
Frequency
7.3.2 Pulse / Frequency Counter with De-bounce Function
Uses input channel 5 for Timer 0 and input channel 7 for Timer 1. The de-bounced signal
uses output channel 0 for Timer 0 and output channel 2 for Timer 1. The De-bounce
means that the signal must remain the specified length of time in the state before the
output will be toggled.
Select rising or falling edge
Specify length of time that input must remain high; time is in increments of 100µs
Specify length of time that input must remain low; time is in increments of 100µs
Can output de-bounced signal to third channel of the bank
Pulse Count = Number of pulses since last enable or last clearing of the counter
Frequency
7.3.3
Waveform Measurement Function
Uses input channel 5 for Timer 0 and input channel 7 for Timer 1.
Select rising or falling edge
Specify number of events to measure before stopping
Events measured counter
Specify timebase, from 1 second to 1µs
Provides Current as well as Average, Maximum and Minimum high time readings as a
function of the timebase
Provides Current as well as Average, Maximum and Minimum low time readings as a
function of the timebase
Frequency
Duty cycle
Period
7.3.4 Time Between Events Function
Uses input channels 5 and 6 for Timer 0 and input channel 7 and 8 for Timer 1.
Select rising or falling edge
Specify number of events to measure before stopping
Specify average weight
Specify timebase, from 1 second to 1µs
Provides Current as well as Average, Maximum and Minimum time between events as a
function of the timebase