Runtime error
Original instructions
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Status word
The bits of the status words have the following meaning:
Bit
Value in Dec.
Value in Hex.
ENO Status
Description
Bit 0 = 1
1
0x0001
False
Error in a calculation in floating point values
Bit 1 = 1
2
0x0002
False
Recording of an invalid value on one of the floating point value inputs
Bit 2 = 1
4
0x0004
False
Division by zero during a floating point value calculation
Bit 3 = 1
8
0x0008
False
Capacity overflow during a floating point value calculation
Bit 4 = 1
16
0x0010
True
The following error will be shown:
  • One of the following variables is negative: inc_rate, dec_rate.
    For calculation, the function block uses the value 0.
  • The parameter outbias lies out of the area .
    In this case the function block uses a capped value: or .
Bit 5 = 1
32
0x0020
True
The output OUT has reached the lower threshold out_min (see Note)
Bit 6 = 1
64
0x0040
True
The output OUT has reached the upper threshold out_max (see Note)
For the list of other possible floating point error codes, see Common Floating Point Errors.
Note
NOTE: In manual mode these bits stay at 1 for only one program cycle. When the user enters a value for OUT which exceeds one of the thresholds, the function block sets the Bit 5 or 6 to 1 and blocks them from the user entered value. With the following execution of the function block the value of OUT no longer lies outside the area and the Bits 5 and 6 are set to 0 again.
Error message
An error appears if a non floating point value is recorded or if there is a problem with a floating point calculation. In this case the outputs OUT, OUTD and MA_O remain unchanged.
NOTE: For a list of all block error codes and values, see Output Processing.
Warning Message
In the following cases a warning message is given: