Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Special Data Register, 0FDB

2. Programming Concepts

X20

X21

A-phase X0

B-phase X1

C251 presentvalue

4

5

6

5

4

3

2

1

0

Y0, C251contact

3

Counting up

3

2

Counting down

1

0

2.13 Special Data Register

The types and functions of special registers (special D) are listed in the table below. Care should be taken that some registers 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. For detailed explanation please also refer to 2.13 in this chapter.

Special	Content	ES2	SS	SA	SX	OFF	STOP	RUN	Attrib.	Latch	Default
D		EX2	2	2	2	Ø	Ø	Ø		-ed
						ON	RUN	STOP
D1000*	SV of program scan ning WDT (Unit: 1ms)	○	○	○	○	200	-	-	R/W	NO	200
D1001	Displaying the firmware version of DVP-PLC	○	○	○	○	-	-	-	R	NO	#
	(initial factory setting)
D1002*	Program capacity	○	○	○	○	-	-	-	R	NO	#
D1003	Sum of program memory (sum of the PLC internal	○	○	○	○	#	-	-	R	YES	15872
	program memory.
D1004*	Syntax check error code	○	○	○	○	0	0	-	R	NO	0
D1008*	Step address when WDT is ON	○	○	○	○	0	-	-	R	NO	0
D1009	Number of LV (Low voltage) signal occurrence	○	○	○	○	-	-	-	R	YES	0
D1010*	Current scan time (Unit: 0.1ms)	○	○	○	○	#	#	#	R	NO	0
D1011*	Minimum scan time (Unit: 0.1ms)	○	○	○	○	#	#	#	R	NO	0
D1012*	Maximum scan time (Unit: 0.1ms)	○	○	○	○	#	#	#	R	NO	0
D1015*	Value of accumulative high-speed timer	○	○	○	○	0	-	-	R/W	NO	0
	(0~32,767, unit: 0.1ms)
D1018*	πPI (Low byte)	○	○	○	○	H’	H’	H’	R/W	NO	H’
						0FDB	0FDB	0FDB			0FDB
D1019*	πPI(High byte)	○	○	○	○	H’	H’	H’	R/W	NO	H’
						4049	4049	4049			4049
D1020*	X0~X7 input filter (unit: ms) 0~20ms adjustable	○	○	○	○	10	-	-	R/W	NO	10
D1022	Counting mode selection (Double frequency/ 4					4	-	-	R/W	NO	4
	times frequency) for AB phase counter (From X0,	○	○	○	○
	X1 input)

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