Owner's manual

18 Rockwell Automation Publication 1756-UM536A-EN-P - April 2012
Chapter 2 Module Operation
Figure 5 illustrates the input tag values returned when the Up/Down Count
function is tied to an input via a hardware input.
Figure 5 - Example of Up/Down Count Function
Up/Down Control Sensor
Count Up
Count Down
1756-LSC8XIB8I
Counter x
Counter Control
Hardware Input x
Counting Sensor
Counter Control Hardware Input
+
–
3
0
1
2
Counting Sensor
1
2
Count Total in Counter[x].Count Tag
Frequency in Counter[x].Frequency Tag
Count Direction in Counter[x].Direction Tag
Pulse Width in Counter[x].PulseWidth Tag
New Frequency
Value
New Frequency
Value
New Frequency
Value
New Frequency
Value
New Frequency
Value
New Frequency
Value
1 1 0
0
0
1
New Pulse
Width Value
New Pulse
Width Value
New Pulse
Width Value
New Pulse
Width Value
New Pulse
Width Value