Mitsubishi MELSEC-Q/L

50
2.4.8 Other convenient instructions
Category
Instruction Symbol
Symbol Processing Details
Execution
Condition
Number of Basic Steps
Subset
See for Description
Up/Down
counter
UDCNT1 4-
Page
287
UDCNT2 4-
Page
289
Teaching
timer
TTMR 3-
Page
291
Special
timer
STMR
• The 4 points from the bit device designated
by (D) operate as shown below, depending
on the ON/OFF status of the input
conditions for the STMR instruction:
(D)+0: Off delay timer output
(D)+1: One shot after off timer output
(D)+2: One shot after on timer output
(D)+3
: On delay and off delay timer output
3-
Page
292
Shortest
direction
control
ROTC
• Rotates a rotary table with n1 divisions
from the stop position to the position
designated by (S+1) in the shortest
direction.
5-
Page
294
Ramp
signal
RAMP
• Changes device data designated by D1
from n1 to n2 in n3 scans.
6-
Page
296
Pulse
density
SPD
• Counts the pulse input from the device
designated by (S) for the duration of time
designated by n, and stores the count in
the device designated by (D).
4-
Page
298
Pulse
output
PLSY 4-
Page
300
Pulse width
modulation
PWM 4-
Page
301
Matrix input MTR
• Reads data of 16 points n rows from the
devices starting from the one specified by
(S), and stores them to the devices starting
from the one specified by (D2).
5-
Page
302
UDCNT1 nSD
(S)+1
Up
Down
Up
(S)+0
Present Cn value
Cn contact
1234 6765 3210-1 -2 -3 -2 -1 00 45
UDCNT2 nSD
(S)+0
(S)+1
Present Cn value
Cn contact
12 45 43 1 0-10 3 2
TTMR nD
(Time that TTMR is ON)
n
(D)
n=0:1, n=1:10, n=2:100
STMR nSD
ROTC n2n1SD
RAMP D1 n3n1 n2 D2
SPD nSD
PLSY n1 n2 D
(n1)Hz (D)
Output n2 times
PWM n1 n2 D
n1
n2
(D)
MTR D2 nD1S