Appendix A System Registers Lists
A.4 User Operation Error Status
A-9
A.4 User Operation Error Status
Error information for user operation errors in ladder programs is stored in registers SW00080 to SW00089.
( 1 ) User Operation Error Status
( 2 ) User Operation Error Codes 1
Name Register No. Description
DWG.A
Error Count
SW00080
• Error count
Number of error occurrences
• Error code
Refer to ( 2 ) User Operation Error Codes 1 or ( 3 ) User Operation
Error Codes 2 for details.
Error Code
SW00081
DWG.I
Error Count
SW00082
Error Code
SW00083
DWG.H
Error Count
SW00084
Error Code
SW00085
DWG.L
Error Count
SW00088
Error Code
SW00089
Bit15
Index error Error Code
12 Bit11
0
Error
Code
Error Contents System Default Setting
Integer
Operations
0001H
Integer operation - underflow −32768
0002H
Integer operation - overflow 32767
0003H
Integer operation - division error The A register remains the same.
0009H
Double-length integer operation - underflow −2147483648
000AH
Double-length integer operation - overflow 2147483647
000BH
Double-length integer operation - division error The A register remains the same.
Real Num-
ber Opera-
tion
0010H
Integer storage - non-numeric error Store not executed. [00000]
0011H
Integer storage - underflow Store not executed. [−32768]
0012H
Integer storage - overflow Store not executed. [+32767]
0021H
Real number storage - underflow Store not executed. [−1.0E+38]
0022H
Real number storage - overflow Store not executed. [1.0E+38]
0023H
Real number operation - division-by-zero error
Operation not executed.
[The F register remains the same.]
0030H
Real number operation - invalid operation (non-
numeric)
Operation not executed.
0031H
Real number operation - exponent underflow 0.0
0032H
Real number operation - exponent overflow Maximum value
0033H
Real number operation - division error (non-
numeric 0/0)
Operation not executed.
0034H
Real number storage - exponent underflow Stores 0.0.
0035H
Real number operation - stack error –
0040H
to
0059H
Standard System Functions
Real number operation errors
Interrupt operation and output = 0.0
0040H: SQRT 0041H: SIN 0042H: COS 0043H: TAN
0044H: ASIN 0045H: ACOS 0046H: ATAN 0047H: EXP
0048H: LN 0049H: LOG 004AH: DZA 004BH: DZB
004CH: LIM 004DH: PI 004EH: PD 004FH: PID
0050H: LAG 0051H: LLAG 0052H: FGN 0053H: IFGN
0054H: LAU 0055H: SLAU 0056H: REM 0057H: RCHK
0058H: BSRCH 0059H: SQRT – –
1000H, 2000H, or 3000H is added for an index error.