LS Industrial Systems XBC-DN10E, User Manual

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Chapter 4 CPU Specifications
XBC E-Type Main Unit 4-18 Ver. 1
3. Floating decimal point operation error : Exception (operation error) supported in IEEE754
standard
Flag Designation Condition of Operation Error Remarks
F00570
Incorrect operation
error latch
If operation result is not correct due to limit of expression range
F00571 Underflow latch If operation result is less than min. regular absolute value
F00572 Overflow latch If operation result is more than max. regular absolute value
F00573 0-devision error latch If dividend is limited value other than 0, and divisor is 0
F00574
Invalid operation
error latch
If operation process is executed incorrectly
F0057A
Incorrect operation
error
If operation result is not correct due to limit of expression range
F0057B Underflow If operation result is less than min. regular absolute value
F0057C Overflow If operation result is more than max. regular absolute value
F0057D 0-devision error If dividend is limited value other than 0, and divisor is 0
F0057E
Invalid operation
error
If operation process is executed incorrectly
F0057F
Irregular value input
error
If irregular data input
Remark
1) Expression of real data meets IEEE754 format. However, its direct input with the format is impossible.
2) In case of XGB, even though it is satisfied to operation error condition, flag applied isn’t set.