User Manual, AUX FUNCT PROM Manual

Programming
Chapter 3
341
Figure 3.39
General
AF4 Power Function W ord and Digit Format
171615141312111076543210
Digit 1
(MSD)
Digit 2
Bit No.
Data Address
m
Digit 2
Digit 2
Result Address
n
DE
n + 1
E = Enable Bit (1 = Function in Progress)
D = Done Bit (1 = Function Complete)
MSD = Most Significant Digit
LSD = Least Significant Digit
11508
Digit 3
(LSD)
Digit 3
Digit 1
(MSD)
Digit 1 (MSD) Digit 3
(LSD)
S = Sign Bit (1 = Negative)
S
S
(LSD)
(Always = 0)
ER
Digit 1
(MSD)
Digit 2
Digit 3
(LSD)
S
m + 1
Base y
Exponent x
Result Base, r
s (Power of 10)
ER = Error Bit (1 = Overflow when y > 9.99(10) )
x 099.
3. Enter a data address and a result address.
If we enter a data address of 200 and a result address of 300, the AF4
establishes the data table format shown in Figure 3.40. Word 200 is reserved
for the base y and word 201 is reserved for the exponent x. The result address,
word 300, is reserved for the result base r; word 301 contains the resultant
exponent s.
Figure 3.40
AF4 Power Function Format After Address Entry
171615141312111076543210
Digit 1
(MSD)
Digit 2
Bit No.
Data Address
Digit 2
Digit 2
Result Address
DE
E = Enable Bit (1 = Function in Progress)
D = Done Bit (1 = Function Complete)
MSD = Most Significant Digit
LSD = Least Significant Digit
11509
Digit 3
(LSD)
Digit 3
Digit 1
(MSD)
Digit 1 (MSD) Digit 3
(LSD)
S = Sign Bit (1 = Negative)
S
S
(LSD)
(Always = 0)
ER
Digit 1
(MSD)
Digit 2
(LSD)
S
Base y
Exponent x
Result Base, r
s (Power of 10)
ER = Error Bit (1 = Overflow when y > 9.99(10) )
x 099.
200
201
300
301