Timing Check Instruction; Generating Timing Pulses - Mitsubishi MELSEC iQ-F FX5 series Programming Manual

7.20

Timing check instruction

Generating timing pulses

DUTY
This instruction sets user timing clock output destinations (SM420 to SM424 and SM8330 to SM8334) specified by (d) to on
for the number of scans specified by (n1) and to off for the number of scans specified by (n2).
Ladder diagram
(n1) (n2) (d)
Setting data
■Descriptions, ranges, and data types
Operand Description
(n1) Number of scans to be turned on
(n2) Number of scans to be turned off
(d) Special relay of the timing clock output destination
■Applicable devices
Operand Bit
X, Y, M, L, U\G T, ST,
SM, F, B, SB
 
(n1)
 
(n2)
*1
 
(d)
*1 Only SM can be used.
Processing details
• This instruction sets user timing clock output destinations (SM420 to SM424 and SM8330 to SM8334) specified by (d) to on
for the number of scans specified by (n1) and to off for the number of scans specified by (n2).
ON
OFF
SM420 to SM424
(n1) scans
• Specify SM420 to SM424 (SM8330 to SM8334) in the special relay of the timing clock output destination specified by (d).
• In SM420 to SM424 (SM8330 to SM8334), when one device is turned on, another device is also turned on at the same
time.
• The counted number of scans is stored among SD8330 to SD8334 in accordance with the special relay of the timing clock
output destination specified by (d).
• The counted number of scans stored among SD8330 to SD8334 is reset when the counted value reaches "(n1)+(n2)" or
when the command input (instruction) is set to on.
Special relay (d) for outputting the timing clock
SM420(SM8330)
SM421(SM8331)
SM422(SM8332)
SM423(SM8333)
SM424(SM8334)
Structured text
ENO:=DUTY(EN,s1,s2,d);
Word
T, ST, C, D, U\G
C, LC W, SD, SW, R
  
  
  
(n2) scans
Range Data type
0 to 65535 16-bit unsigned binary
0 to 65535 16-bit unsigned binary
(SM420 to SM424, Bit
SM8330 to SM8334)
Double word Indirect
specification
Z LC LZ
   
   
   
Scan counting device
SD8330
SD8331
SD8332
SD8333
SD8334
7 APPLICATION INSTRUCTION
Data type (label)
ANY16
ANY16
Bit
Constant Others
K, H E $
   
   
   
7.20 Timing check instruction
7
601