Delta DVP-SE - 2.8 M Relay

2. Programming Concepts
2-15
2.8 M Relay
The types and functions of special auxiliary relays (special M) are listed in the table below. Care
should be taken that some devices of the same No. may bear different meanings in different series
MPUs. Special M and special D marked with “*” will be further illustrated in 2.13. Columns marked
with “R” refers to “read only”, “R/W” refers to “read and write”, “-“ refers to the status remains
unchanged and “#” refers to that system will set it up according to the status of the PLC.
Special
M
Function
ES2
EX2
EC5
SS2
SA2
SE
SX2
OFF

ON
STOP

RUN
RUN

STOP
Attrib.
Latch
-ed
Default
M1000*
Monitor normally open contact
○ ○ ○ ○
OFF
ON
OFF
R
NO
OFF
M1001*
Monitor normally closed contact
○ ○ ○ ○
ON
OFF
ON
R
NO
ON
M1002*
Enable single positive pulse at the
moment when RUN is activate (Normally
OFF)
○ ○ ○ ○
OFF ON OFF R NO OFF
M1003*
Enable single negative pulse at the
moment when RUN is activate (Normally
ON)
○ ○ ○ ○
ON OFF ON R NO ON
M1004*
ON when syntax errors occur
○ ○ ○ ○
OFF
OFF
-
R
NO
OFF
M1008*
Watchdog timer (ON: PLC WDT time out)
○ ○ ○ ○
OFF
OFF
-
R
NO
OFF
M1009
Indicate LV signal due to 24VDC
insufficiency
○ ○ ○ ○
OFF - - R NO OFF
M1011*
10ms clock pulse, 5ms ON/5ms OFF
○ ○ ○ ○
OFF
-
-
R
NO
OFF
M1012*
100ms clock pulse, 50ms ON / 50ms
OFF
○ ○ ○ ○
OFF - - R NO OFF
M1013*
1s clock pulse, 0.5s ON / 0.5s OFF
○ ○ ○ ○
OFF
-
-
R
NO
OFF
M1014*
1 min clock pulse, 30s ON / 30s OFF
○ ○ ○ ○
OFF
-
-
R
NO
OFF
M1015*
Enable high-speed timer
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1016*
Indicate Year display mode of RTC.
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1017*
±
30 seconds correction on real time clock
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1018
Flag for Radian/Degree, ON for degree
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1019*
If the PLC detects the external 24V
voltage is unstable; OFF: the PLC runs
after the power is stabilized, ON: the error
LED keeps flashing
○ ○ ○ ○
OFF - - R/W NO OFF
M1020
Zero flag
○ ○ ○ ○
OFF
-
-
R
NO
OFF
M1021
Borrow flag
○ ○ ○ ○
OFF
-
-
R
NO
OFF
M1022
Carry flag
○ ○ ○ ○
OFF
-
-
R
NO
OFF
M1024
COM1 monitor request
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1025*
Indicate incorrect request for
communication
○ ○ ○ ○
OFF - - R NO OFF
M1026
RAMP mode selection
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1027
PR output mode selection (8/16 bytes)
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1028
Switch T64~T126 timer resulotion
(10ms/100ms). ON =10ms
○ ○ ○ ○
OFF - - R/W NO OFF
M1029*
CH0 (Y0, Y1) pulse output execution
completed.
○ ○ ○ ○
OFF - - R NO OFF
M1030* Pulse output Y1 execution completed
ES2/
EX2
○ ○ ○
OFF - - R NO OFF
M1031*
Clear all non-latched memory
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1032*
Clear all latched memory
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1033*
Output state latched at STOP
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1034*
Disable all Y outputs
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1035*
Enable X7 input point as RUN/STOP
switch
○ ○ ○ ○
- - - R/W YES OFF
M1037*
Enable 8-sets SPD function (Has to be
used with D1037) Refer to section 2.16
the description on M1037 for more
information on availability.
ES2/
EX2
○ ○ ○
OFF OFF OFF R/W NO OFF
M1038
Switch T200~T255 timer resulotion
(10ms/1ms). ON = 1ms
○ ○ ○ ○
OFF - - R/W NO OFF
M1039*
Fix scan time
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1040
Disable step transition
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1041
Step transition start
○ ○ ○ ○
OFF
-
OFF
R/W
NO
OFF
M1042
Enable pulse operation
○ ○ ○ ○
OFF
-
-
R/W
NO
OFF
M1043
Zero return completed
○ ○ ○ ○
OFF
-
OFF
R/W
NO
OFF