Mitsubishi Electric M800VW Series Programming Manual page 222

M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.2 Arithmetic Operation Instructions
ED*, ED*P ED/, ED/P: Floating-point data multiplication and division operations (double precision)
Setting
Bit devices
data
X Y M L F
S1
S2
D
△ : S1 and S2 cannot be specified as constant at the same time.
[Instruction symbol] [Execution condition]
ED*, ED/
ED*P, ED/P
 Setting data
Setting data
Data to be multiplied or divided, or the first number of the device storing data to be
S1
multiplied or divided.
Multiplication or division data, or the first number of the device storing multiplication
S2
or division data.
D The head number of device to store the result of multiplication or division
 Functions
ED*
 Multiplies the 64-bit floating-point real number designated by (S1) by the 64-bit floating-point real number designated by
(S2) and stores the result of the multiplication at the device designated by (D).
S1+3 S1+2 S1+1 S1
64-bit floating-point real
number
 The following values can be designated and stored by (S1), (S2), or (D).
-1022
0, 2 ≤ | Designated value (stored value) | < 2
 When the operation results in "-0" or an underflow, the result is processed as "0".
 When setting input values from programming tools, rounding errors may occur.
For precautions when setting input values from programming tools, refer to "6.3.4 Single/Double-Precision Real Number
Data".
Usable devices
B SB T SM V T C
○ ○
○ ○
○ ○
Command
Command
Meaning
S2+3 S2+2 S2+1 S2
×
64-bit floating-point real
number
1024
Con-
Word devices
stant
D R/ZR W SW SD Z
○ ○ ○ ○ ○
○ ○ ○ ○ ○
○ ○ ○ ○ ○
D+3 D+2 D+1 D
64-bit floating-point real
number
201
Digit
Pointer designa- Index
tion
E P
△
△ ○
indicates the signs "ED*"/"ED/".
S1 S2 D
P S1 S2 D
Data type
Real number
IB-1501667-B