5. SEQUENCE INSTRUCTIONS
5 − 23
MELSEC-A
5.3.3 Edge-triggered differential output
(PLS, PLF)
Available Device
Bit device Word (16-bit) device Constant Pointer
Level
Carry
flag
Error
flag
X Y M L S B F T C D W R A0 A1 Z V K H P I N
Digit specification
Index
M9012 (M9010, M9011)
(D) O O O O O O
*1: Index qualification can be used with AnA, A2AS, AnU, QCPU-A (A Mode) and A2USH board only.
Function PLS
(1) When the PLS command changes from Off to On, the specified device goes On
for 1 scan and when the PLS command is in a state other than Off → On (Off →
Off, On → On, On → Off), the device goes Off.
If there is one PLS instruction from the specified device (D) within 1 scan, the
specified device goes On for 1 scan.
See Section 3.9 concerning operation in the case that the PLS instruction from
the same device is executed multiple times in 1 scan.
PLS command
X005
PLS M0
PLS
PLS
PLS command
M0 OFF
X5 OFF
ON
ON
1 scan
Applicable
CPU
All CPUs
PLF command
(D)
(D)
(D)
Device number to be con-
verted into pulse
Setting data
1 scan
*1