Mitsubishi Electronics MR-J2S- A instruction manual Reading 4 bits

15. ABSOLUTE POSITION DETECTION SYSTEM

3 (Continued from preceding page) 3

M4	C0
		MOV	K1X30	D5	Reading 4 bits
Read	ABS data
enabled	counter
		WAND H0003		D5	Masking 2 bits
		WOR	D5	A0	Adding 2 bits
			DROR	K2	Right rotation of A0 2 bits
		D5	D2	D2	Adding check sum
				D0	Counting frequency of ABS
				C0	data reception
			PLS	M6	Completion of reading: 2 bits
					of ABS data
C1
			RORP	K10	Right rotation of A0 10 bits
Check
sum
counter		WAND H003F		A0	Masking check sum
	D2	A0		M1	Sum check OK
	D2	A0		M2	Sum check NG
		MOV	A0	D6	Sum check memory
C2
				Y4A	ABS check sum error
Retry counter

	M6
							RST	Y42		Resetting ABS request
	ABS 2 bits r		ead
	completion
	M5
	Check sum 2 bits read completion
	Y41		X32
							PLS	M7		ABS 2 bits request
		transfer
	ABS			Send data
	mode			ready
	M7
										Setting ABS request
							SET	Y42
	ABS 2 bits request
	Y42		X32					K1		10ms delay timer
								T200
	ABS		Send data ready
	request
	Y42		X32		T200					Transmission data read
								M4
										enabled
					10ms delay timer
4						(To be continued)			4

Reading ABS data 32 bits

(2 bits 16 times)

Detecting ABS data check sum error

ABS request control

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