3 Devices
Special
M
device
Function 20D 20M
Off
On
STOP
RUN
RUN
STOP
Attribute Latching Default Page
M1246
C246: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1247
C247: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1248
C248: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1249
C249: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1250
C250: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1251
C251: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1252
C252: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1253
C253: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1254
C254: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1255
C255: Selecting a mode of counting (On: Counting
down)
○ ○ Off - - R No Off -
M1303
Interchanging high bits with low bits when XCH is
executed
○ ○ Off - - R/W No Off
M1304* The input terminals can be set to ON or OFF. ○ ○ Off - - R/W No Off 3-35
M1744* Resetting the M-code in the Ox motion subroutine ○ ○ Off Off - R/W No Off 3-36
M1745
Disabling the X-axis from returning home in the Ox
motion subroutine
○ ○ Off - - R/W No Off -
M1746
Setting the signal for starting the noncyclic
electronic cam motion
○ ○ Off R/W No Off -
M1748 Stopping the electronic cam motion ○ ○ Off R No Off -
M1749
Controlling the maximum frequency of pulses sent
by the electronic cam
○ ○ Off - - R/W No Off -
M1751
Enabling the writing of the present command
position of the X-axis
○ ○ Off - - R/W No Off 3-36
The electronic cam does not start at zero.
M1752
Immediately stopping the noncyclic electronic cam
motion when there is a transition in DOG’s signal
from low to high or form high to low
○ ○ Off - - R/W No Off -
M1755
Switching the source of the master axis of the
noncyclic electronic cam
○ ○ Off - - R/W No Off -
M1756
The reference terminals for the synchronization
output terminals are X0 (CLR0=Off) and X1 (CLR1=
Off).
○ ○ Off - - R/W No Off -
M1757
The present speed of the electronic cam remains
unchanged.
○ ○ Off - - R/W No Off -
M1760
Using a radian or a degree in the Ox motion
subroutine
○ ○ Off - - R/W No Off -
M1761 The X-axis stops at the angle specified. ○ ○ Off - - R/W No Off 3-36
M1792 The X-axis is ready. ○ ○ On On On R No On 3-36
M1793*
X-axis motion error flag (It is reset at the time when
the X-axis operates.)
○ ○ Off - - R/W No Off 3-37
M1794*
If an M code in an Ox motion subroutine is
executed, M1794 will be ON. (M1974 is reset to
OFF at the time when the Ox motion subroutine is
executed.)
○ ○ Off - Off R No Off 3-36
M1795
If M0 in an Ox motion subroutine is executed,
M1795 will be ON. (M1795 is reset to OFF at the
times when the Ox motion subroutine is executed.)
○ ○ Off - - R No Off -
M1796
If M02 in an Ox motion subroutine is executed,
M1796 will be ON. (M1796 is reset to OFF at the
time when the Ox motion subroutine is executed.)
○ ○ Off On - R No Off -
DVP-20PM Application Manual
3-18
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