Mitsubishi Electric MELSEC-Q/L - Floating-Point Sign Inversion (Double Precision)

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6 BASIC INSTRUCTIONS
6.3 Data Conversion Instructions
Floating-point sign inversion (double precision)
EDNEG(P)
Processing details
• Reverses the sign of the 64-bit floating decimal point type real number data designated by (D), and stores at the device
designated by (D).
• Used when reversing positive and negative signs.
Operation error
• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.
Program example
• The following program inverts the sign of the 64-bit floating decimal point type real number data at D0 to D3 when X20 goes
ON, and stores result at D0 to D3.
(D): Head number of the devices where the 64-bit floating decimal point data whose sign is to be reversed is stored (real number)
Setting
data
Internal device R, ZR J\ U\G Zn Constant Others
Bit Word Bit Word
(D)  
Error
code
Error details Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4140 The specified device value is not within the following range:
0, 2
-1022
 | Specified device value | < 2
1024
The specified device value is -0, unnormalized number, nonnumeric, and .

[Ladder Mode] [List Mode]
[Operation]
Universal LCPU
Basic
High
performance
Process Redundant
Command
Command
EDNEG
EDNEGP
D
D
EDNEG
EDNEGP
Step
Instruction
Device
D1 D0D3 D2D1
1.2345
D0D3 D2