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Pulse Outputs Section 5-3
HIGH-SPEED COUNTER
PV READ: PRV(881)
In addition to its interrupt and high-speed counter functions, PRV(881) can be
used to read the pulse output PV or pulse output status information.
The status of the following flags is read as status information:
• Pulse Output Status Flag
• PV Underflow/Overflow Flag
• Pulse Output Amount Set Flag
• Pulse Output Completed Flag
• Pulse Output Flag
• No-origin Flag
• At Origin Flag
• Pulse Output Stopped Error Flag
Note This section explains the functions related to pulse outputs only. For details on
the PRV(881) instruction’s high-speed counter or interrupt functions, refer to
5-1 Interrupt Functions or 5-2 High-speed Counters.
PRV(881)
P
C
D
P: Port specifier
C: Control data
D: First destination word
Operand Contents
P Port specifier #0000: Pulse output 0
#0001: Pulse output 1
#0002: Pulse output 2
#0003: Pulse output 3
#1000: PWM output 0
#1001: PWM output 1
C Control data #0000: Read the PV.
#0001: Read the status.
#0003: Read the pulse output frequency.
#0013: Read the frequency for 10-ms sampling.
#0023: Read the frequency for 100-ms sampling.
#0033: Read the frequency for 1-s sampling.
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