Mitsubishi MELSEC Q Series Programming Manual page 676

LOG10D(P)
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns on, and an
error code is stored into SD0.
• The value specified by
• The value specified by
• The value of the specified device is not in the following range:
0,2
• The value of the specified device is
• The value resulted from the operation is within the range shown below.
(When an overflow occurs):
1024
2
Program Example
(1) This following program obtains the value for common logarithm of the 64-bit floating-point
data type real number specified by D600 to D603 when M0 is turned on. Then the program
stores the operation result into D123 to D126.
[Ladder Mode]
[Operation]
7-302
is negative.
S
is 0.
S
-1022
| value of specified device | < 2
| value of specified device |
D603 D602
Log
2.806
10
1024
0.
[List Mode]
Step Instruction
D601 D600 D126 D125
(Error code: 4100)
(Error code: 4100)
(Error code: 4140)
(Error code: 4140)
(Error code: 4141)
Device
D124 D123
0.448088