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3. Instructions
CS/CJ/NSJ Series Instructions Reference Manual (W474)
High-speed Counter/Pulse Output Instructions
3
PRV
C: Control Data
D: First Destination Word
z Operand Specifications
Flags
C PRV(881) function
0000 hex Reads the PV.
0001 hex Reads status.
0002 hex Reads range comparison results.
00 3 hex
P = 0000 to 0003: Reads the output frequency of pulse output 0 to 3.
C = 0003 hex: Standard operation
P = 0010: Reads the frequency of high-speed counter input 0 (high-speed counter 0 only).
C = 0003 hex: Standard operation
C = 0013 hex: 10-ms sampling method for high frequency (supported only by CJ1M CPU Units with unit version 3.0 or
later or CJ2M CPU Units)
C = 0023 hex: 100-ms sampling method for high frequency (supported only by CJ1M CPU Units with unit version 3.0 or
later or CJ2M CPU Units)
C = 0033 hex: 1-s sampling method for high frequency (supported only by CJ1M CPU Units with unit version 3.0 or
later or CJ2M CPU Units)
Area
Word addresses
Indirect DM/EM
addresses
Con-
stants
Registers Flags
Pulse
bits
TR
bits
CIO WR HR AR T C DM EM
@DM
@EM
*DM
*EM
DR IR
Indirect
using IR
TK CF
P, C --- --- --- --- --- --- --- --- --- --- OK
--- ---
---
--- --- --- ---
D OKOKOKOKOKOKOKOK OK OK --- OK
Name Label Operation
Error Flag P_ER • ON if the specified range for P or C is exceeded.
• ON if the combination of P and C is not allowed.
• ON if reading range comparison results is specified even though range comparison is not being executed.
• ON if reading the output frequency is specified for anything except for high-speed counter 0.
• ON if specified for a port not set for a high-speed counter.
• ON if executed for a port not set for an input interrupt in counter mode.
• For a CJ2M CPU Unit, ON for any function that uses I/O on the Pulse I/O Module even if a Pulse I/O Module is not
mounted.
• OFF in all other cases.
Carry Flag
(CJ2M CPU Units
Only)
P_CY • ON if a high-frequency method is specified for reading the frequency of high-speed counter 0 and the data could
not be read dependably within the sampling time because the counter value was reset.
• OFF in all other cases.
D
D+1
0
15
DPV
0
15
Lower word of PV
Upper word of PV
2-word PV
Pulse output PV, high-speed counter input PV, pulse output frequency,
high-speed counter input frequency, high-speed counter input for
high-speed counter input 0, or range comparison results for 1 to 32
ranges
1-word PV
Interrupt input PV in counter mode, status, range comparison results
for 8 ranges
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