4 number conversion 7-147 – HEIDENHAIN TNC 407 (243 020) Technical Manual User Manual
Page 608
4.4 Number Conversion
4.4.1 Number Conversion Binary to ASCII (Module 9050)
Converts a binary numerical value consisting of mantissa and exponent to the base 10 to an ASCII-
coded decimal number.
The number specified as mantissa and exponent is converted to a decimal number and stored at the
specified address as a string. The exponent relates to the lowest-value place in the number. A
negative number is detected when the mantissa corresponds to a negative number in the notation
as a two's complement. A sign is only set in front of negative numbers. Trailing zeroes after the
decimal point or leading zeroes before the decimal point are not converted, the string is written left-
justified starting from the specified target address in the string buffer.
Constraints:
- The decimal sign is defined by machine parameter MP7280 as a decimal comma (MP7280 = 0) or
a decimal point (MP7280 = 1).
Possible errors:
- The number of the target string is outside the permitted range (0..3).
- The conversion would result in more than 10 places after the decimal point.
- The conversion would result in more than 10 places before the decimal point.
Call:
PS
K/B/W/D
PS
K/B/W/D
PS
K/B/W/D
CM
9050
Error status after call: M3171 =
0: Number was converted
1: Error condition see above
Examples:
Mantissa
Exponent
Decimal number
123
0
"123"
-123
0
"-123"
123
2
"12300"
123
-3
"0.123"
123456
-3
"123.456"
123
-5
"0.00123"
100
-3
"0.1"
1234567890
-11
"0.0123456789"
123
-11
Error: more than 10 places after decimal
point
123456789
1
"1234567890"
123
8
Error: more than 10 places before decimal
point