Pulse Related Instructions; Measuring The Density Of Pulses - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

7.17

Pulse Related Instructions

Measuring the density of pulses

SPD
RnPCPU
RnCPU RnENCPU
(Process)
This instruction counts the device input only for the specified time.
Ladder
(s1)
FBD/LD
EN ENO
s1 d
s2
■Execution condition
Instruction
SPD
Setting data
■Descriptions, ranges, and data types
Operand Description
(s1) Pulse input device number
(s2) Measurement time, or the device number of the device
containing the measurement time (unit: ms)
(d) Device for storing the measurement result
EN Execution condition
ENO Execution result
*1 Only labels assigned to device (X) can be used.
■Applicable devices
Operand Bit
X, Y, M, L,
SM, F, B, SB,
FX, FY
*1

(s1)

(s2)

(d)
*1 Only X can be used. Note, however, that it can be used only within the range of the number of I/O points (the number of points that can
access I/O modules).
7 APPLICATION INSTRUCTIONS
894
7.17 Pulse Related Instructions
RnPCPU RnSFCPU RnSFCPU
(Redundant) (Standard) (Safety)
(s2) (d)
Execution condition
Word
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
 
 
 
ST
ENO:=SPD(EN,s1,s2,d);
Range

-32768 to 32767



Double word Indirect
U\G, J\, Z LT, LST,
U3E\(H)G LC
  
  
  
Data type Data type (label)
Bit ANY_BOOL
16-bit signed binary ANY16
16-bit signed binary ANY16
Bit BOOL
Bit BOOL
Constant
specification
LZ K, H E
   
   
   
*1
Others
$
 
 
 