Automationdirect.com DirectLOGIC DL205 Series

DL205 User Manual, 4th Edition, Rev. B
5–81
Chapter 5: Standard RLL Instructions - Logical
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Exclusive OR Formatted (XORF)
The Exclusive Or Formatted instruction performs an exclusive OR
of the binary value in the accumulator and a specified range of
discrete memory bits (1 to 32).
The instruction requires a starting location (Aaaa) and the number
of bits (Kbbb) to be exclusive ORed. Discrete status flags indicate if
the result of the Exclusive Or Formatted is zero or negative (the most
significant bit is on).
NOTE: Status flags are valid only until another instruction uses the same flag.
In the following example, when X1 is on, the binary pattern of C10–C13 (4 bits) will be
loaded into the accumulator using the Load Formatted instruction. The value in the
accumulator will be logically Exclusive Ored with the bit pattern from Y20–Y23 using the
Exclusive Or Formatted instruction. The value in the lower 4 bits of the accumulator are
output to C20–C23 using the Out Formatted instruction.
Standard RLL
K4C10
00000000000001100000000000000000
151413121110987654321031 30 29 28 27 26 25 24 23 22 21 20 19 18 17 1631 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
C10
C11C12C13
OFFONONOFF
Y20Y21Y22Y23
OFFONOFFON
Accum ul ator
0000000000001100
Acc.
Acc.
0000000000000000 0000000000000110
1010
C20C21C22C23
OFF
OFF
ONON
K4C20
Handheld Programmer Keystrokes
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STR
$
SHFT
ANDST
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OUT
GX
SHFT
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OR
Q
SHFT
SET
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SHFT
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NEXT NEXT NEXT NEXT
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PREV PREV
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Location
Constant
Location Constant
The unused accumulator bits are set to zero
DirectSOFT32
X1
LDF C10
K4
X0RF Y20
K4
OUTF C20
K4
Load the status of 4
consecutive bits (C10-C13)
into the accumulator
Exclusive OR the binary bit
pattern (Y20-Y23) with the
value in the accumulator
Copy the specified number
of bits from the accumulator
to C20-C23
XORF (Y20-Y23)
XORF A aaa
K bbb
ý
ý
þ
þ
230
240
250-1
260
Discrete Bit Flags Description
SP63 Will be on if the result in the accumulator is zero
SP70 Will be on if the result in the accumulator is negative
Operand Data Type DL250-1 Range DL260 Range
A aaa bbb aaa bbb
Inputs X 0–777 – 0–1777 –
Outputs Y 0–777 – 0–1777 –
Control Relays C 0–1777 – 0–3777 –
Stage bits S 0–1777 – 0–1777 –
Timer bits T 0–377 – 0–377 –
Counter bits CT 0–177 – 0–377 –
Special Relays SP 0-777 – 0–777 –
Global I/O GX/GY - – 0-3777 –
Constant K - 1–32 - 1–32
DS Used
HPP Used