Delta DVP-ES2 - Manual (Page 49)

2 . P r o g r a m m i n g C o n c e p ts
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 ○ ○ ○ ○
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