875
High-speed Counter/Pulse Output Instructions Section 3-21
Ladder Symbol
Variations
Applicable Program Areas
Operands C1: Control Data
The function of PRV2(883) is determined by the control data, C1.
Note The second digit of C (@) specifies the units and the third digit (*) specifies
the frequency calculation method.
C2: Pulses per Revolution
Specifies the number of pulses per revolution (0001 to FFFF hex).
D: First Destination Word
The PV is output to D or to D and D+1.
Operand Specifications
PRV2
C1
C2
D
C1: Control data
C2: Pulses per revolution
D: First destination word
Variations Executed Each Cycle for ON Condition PRV2(883)
Executed Once for Upward Differentiation @PRV2(883)
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification Not supported
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
C1 PRV2(883) function
0@*0 hex
(See note.)
Converts frequency to rotation speed.
0001 hex Converts counter PV to total number of revolutions.
C1
0
Conversion Type
0 hex: Frequency to speed
1 hex: Counter PV to total revolutions
(When Conversion Type is "Frequency to speed")
Pulse Frequency Calculation Method
0 hex: Standard calculation method
1 hex: High-frequency calculation method, 10-ms sampling (See note.)
2 hex: High-frequency calculation method, 100-ms sampling (See note.)
3 hex: High-frequency calculation method, 1,000-ms sampling (See note.)
(When Conversion Type is "Frequency to speed")
Speed Unit
0 hex: r/min
1 hex: r/s (See note.)
2 hex: r/h (See note.)
D
D+1
015
Conversion result (Rightmost 4 digits)
Conversion result (Leftmost 4 digits)
Area C1 C2 D
CIO Area --- CIO 0000 to
CIO 6143
CIO 0000 to
CIO 6142
Work Area --- W000 to W511 W000 to W510
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