AutomationDirect DL205 User Manual

DL205 User Manual, 4th Edition, Rev. D
5-136
Chapter 5: Standard RLL Instructions
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Radian Real Conversion (RADR)
The Radian Real Conversion instruction converts the real
degree value stored in the accumulator to the equivalent real
number in radians. The result resides in the accumulator.
Degree Real Conversion (DEGR)
The Degree Real instruction converts the degree real radian
value stored in the accumulator to the equivalent real number
in degrees. The result resides in the accumulator.
The two instructions described above convert real numbers in
the accumulator from degree format to radian format, and visa-
versa. In degree format, a circle contains 360 degrees. In radian format, a circle contains 2
P. These convert between both positive and negative real numbers, and for angles greater
than a full circle. These functions are very useful when combined with the transcendental
trigonometric functions (see the section on math instructions).
NOTE: The current HPP does not support real number entry with automatic conversion to the 32-bit IEEE
format. You must use DirectSOFT for entering real numbers, using the LDR (Load Real) instruction.
The following example takes the sine of 45 degrees. Since transcendental functions operate
only on real numbers, we do a LDR (Load Real) 45. The trig functions operate only in radians,
so we must convert the degrees to radians by using the RADR command. After using the SINR
(Sine Real) instruction, we use an OUTD (Out Double) instruction to move the result from
the accumulator to V-memory. The result is 32-bits wide, requiring the Out Double to move
it.
RADR




230
240
250-1
260
DEGR




230
240
250-1
260
Discrete Bit Flags Description
SP63 On when the result of the instruction causes the value in the accumulator to be zero
SP70 On anytime the value in the accumulator is negative
SP71 On anytime the V-memory specified by a pointer (P) is not valid
SP72 On anytime the value in the accumulator is a valid floating point number
SP74 On anytime a floating point math operation results in an underflow error
SP75 On when a BCD instruction is executed and a NON-BCD number was encountered
LDR
R45
X1
Load thereal num ber 45 into
theaccumulator.
RADR
Convertthe degrees into radians,
leavingthe result in the
accumulator.
OUTD
V2000
Copy thevalue in the
accumulatortoV2000
and V2001.
45.000000
Accumulatorcontents
(viewedasreal number)
0.7853982
SINR
Take thesineofthe number in
theaccumulator, whichisin
r adi ans.
0.7071067
0.7071067
DirectSOFT
DS Used
HPP N/A

AutomationDirect DL205 Specifications

General

Brand	AutomationDirect
Model	DL205
Category	Controller
Language	English