Section 5. System Overview
• Edge timing
o Resolution — 540 ns
Note A period-averaging sensor has a frequency output, but it is connected to a
SE terminal configured for period-average input and measured with the
PeriodAverage() instruction (see section Period Averaging — Overview
(p. 70) ).
5.1.3.1 Pulses Measured
Pulse outputs vary. These variations are illustrated in the figure Pulse-Sensor
Output-Signal Types
(p. 69).
Figure 23. Pulse-Sensor Output-Signal Types
5.1.3.2 Pulse-Input Channels
Table Pulse-Input Channels and Measurements (p. 69) lists devices, channels and
options for measuring pulse signals.
Table 3. Pulse-Input Terminals and Measurements
Pulse-Input
Terminal
Input Type
Data Option
CRBasic
Instruction
P Terminal
• Low-level ac
• High-frequency
• Switch-closure
• Counts
• Frequency
• Run average
of frequency
PulseCount()
C Terminal
• Low-level ac
with LLAC4
(p.
646)
module
• High-frequency
• Switch-closure
• Counts
• Frequency
• Running
average of
frequency
• Interval
• Period
• State
PulseCount()
TimerIO()
69
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