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HIGH-SPEED COUNTER PV READ: PRV(881) Section 5-2
• Range comparison results.
• High-speed counter frequency for high-speed counter input 0.
• Pulse output frequency for pulse output 0 or 1 (CJ1M CPU Units with unit
version 3.0 or later only).
Ladder Symbol
Variations
Applicable Program Areas
Operands P: Port Specifier
P specifies the port to which the operation applies.
C: Control Data
The function of INI(880) is determined by the control data, C.
00@3 hex:
P = 0000 or 0001 hex: Reads the frequency of pulse output 0 or 1.
P = 0010 hex: Reads the frequency of high-speed counter input 0.
C = 0003 hex: Standard operation
C = 0013 hex: 10-ms sampling method for high frequency (supported only
by CJ1M CPU Units Ver. 3.0 or later)
PRV(881)
P
C
D
P: Port specifier
C: Control data
D: First destination word
Variations Executed Each Cycle for ON Condition PRV(881)
Executed Once for Upward Differentiation @PRV(881)
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
PPort
0000 hex Pulse output 0
0001 hex Pulse output 1
0010 hex High-speed counter 0
0011 hex High-speed counter 1
0100 hex Interrupt input 0 in counter mode
0101 hex Interrupt input 1 in counter mode
0102 hex Interrupt input 2 in counter mode
0103 hex Interrupt input 3 in counter mode
1000 hex PWM(891) output 0
1001 hex PWM(891) output 1
C PRV(881) function
0000 hex Reads the PV.
0001 hex Reads status.
0002 hex Reads range comparison results.
00@3 hex Reads the high-speed counter frequency for
high-speed counter input 0.
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