Delta DVP-ES2 User Manual Page 49

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2. Programming Concepts
Binary Octal Decimal (K) BCD Hexadecimal (H)
(BIN) (OCT) (DEC) (Binary Code Decimal) (HEX)
Costant K, No. of
registers M, S, T, C,
D, E, F, P, I devices
For PLC
internal
operation
For DIP Switch and 7-
segment display
No. of X, Y
relay
Constant H
1101 15 13 0011 D
1110 16 14 0100 E
1111 17 15 0101 F
10000 20 16 0110 10
10001 21 17 0111 11
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
SS2 SA2 SX2
OFF
Ø
ON
STOP
Ø
RUN
RUN
Ø
STOP
Attrib.
Latch
Default
-ed
M1000* OFF ON OFF R NO OFF
Monitor normally open contact
M1001* ON OFF ON R NO ON
Monitor normally closed contact
Enable single positive pulse at the
moment when RUN is activate (Normally
OFF)
M1002*
OFF ON OFF R NO OFF
Enable single negative pulse at the
moment when RUN is activate (Normally
ON)
M1003*
ON OFF ON R NO ON
M1004* ON when syntax errors occur OFF OFF - R NO OFF
M1008* OFF OFF - R NO OFF
Watchdog timer (ON: PLC WDT time out)
Indicate LV signal due to 24VDC
insufficiency
M1009
OFF - - R NO OFF
M1011* 10ms clock pulse, 5ms ON/5ms OFF OFF - - R NO OFF
100ms clock pulse, 50ms ON / 50ms
OFF
M1012*
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* OFF - - R/W NO OFF
Indicate Year display mode of RTC.
M1017* OFF - - R/W NO OFF
±30 seconds correction on real time clock
M1018 Flag for Radian/Degree, ON for degree OFF - - R/W NO OFF
2-17
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