Campbell Scientific CR10 CR10 Measurement and Control - Page 150
ARCTAN, here., error., coefficients., correctly., locations., ARCTANXt
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SECTION 10. PROCESSING INSTRUCTIONS Coeff. uo Y1 Y*Y2 o cl c2 ca *D1 D2 T1 T2 T3 T4 T5 Value Entry -3957.08.630428s3 5.8603 -3970.3 -7114.265 -7114.3 102779.1 102.78 70.29398 70.294 -161.96.120816471 6.6101 -119.29 0.0308837 30.884 0.0 0.0 26.33703 26.337 201..885011619885 0.0 0.0 0.85170 21.801 0.0 0.0 * Y3 and D1 coefficients are entered as Y3/1000 and D1*1000. The large number of coefficients which must be entered into the program often leads to entry error. As a check on coefficient entry, the third value output by Instruction 64 is the signature of the coefficients. The signature is a calculated number unique to the value and order of the 14 coefficients. For future comparisons, note this signature after entering the coefficients correctly. Signatures will be identical if and only if exactly the same coefficients are entered. *** 65 BULK LOAD *** FUNCTION Instruction 65 inputs given values in up to eight Input Storage locations. Instruction 65 is only in standard PROM OS10-1.1. The Bulk Load instruction has 9 parameters. The first eight are the values to be entered in input storage locations. The ninth is the input location for the first data value; subsequent data values are placed in sequential input locations. PARAM. NUMBER 01: 02: 03: 04: 05: 06: 07: OB: 09: TYPE DATA DESCRIPTION FP Param. to be entered FP tr FP x FP FP tr FP tr FP il FP 4 Starting input location **r 66 ARCTAN *** FUNCTION Calculate the angle in degrees whose tangent is )UY. The polarity of X and Y must be known to determine the quadrant of the angle, as shown here. lf 0 is entered for Parameter 2, the Arctangent of X is the result (limits of ARCTAN(X) are -90" < ARCTAN < 90'). Quadrant Siqn of X Siqn of Y I + il + l ill IV + PARAM. DATA NUMBER TYPE DESCRIPTION 01: o2: 03: 4 4 4 X Input location of txl Y Input location of tYl Destination input location for ARCTAN(Xt/) Input locations altered: 1 10-8