Mitsubishi Electric MELSEC-Q/L - Page 248

246
6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
E+(P), E-(P) [When three data are set]
*1 Applicable for the Universal model QCPU, LCPU.
Processing details
■E+
• Adds the 32-bit floating decimal point type real number designated at (S1) and the 32-bit floating decimal point type real
number designated at (S2), and stores the sum in the device designated at (D).
• Values which can be designated at (S1), (S2) and (D) and which can be stored, are as follows:
0, 2
-126
 | Designated value (stored value) | < 2
128
• When an input value is set using a programming tool, a rounding error may occur. For precautions, refer to Page 89
Precautions.
■E-
• Subtracts a 32-bit floating decimal point type real number designated by (S1) and a 32-bit floating decimal point type real
number designated by (S2), and stores the result at a device designated by (D).
• Values which can be designated at (S1), (S2) and (D) and which can be stored, are as follows:
0, 2
-126
 | Designated value (stored value) | < 2
128
• When an input value is set using a programming tool, a rounding error may occur. For precautions, refer to Page 89
Precautions.
(S1): Data to be added to/subtracted from or head number of the devices where the data to be added to/subtracted from is stored (real number)
(S2): Data for adding/subtracting or head number of the devices where the data for adding/subtracting is stored (real number)
(D): Head number of the devices where the operation result will be stored (real number)
Setting
data
Internal device R, ZR J\ U\G Zn Constant
E
Others
Bit Word Bit Word
(S1)   
*1

(S2)   
*1

(D)   
*1

Command
Command
P
S1 S2 D
S1 S2 D
E+, E-
E+P, E-P
indicates an instruction symbol of E+/E-.
+1
32-bit floating-point
real number
+
+1
32-bit floating-point
real number
+1
32-bit floating-point
real number
S1 S2
D
S1 S2
D
+1
32-bit floating-point
real number
+1
32-bit floating-point
real number
+1
32-bit floating-point
real number
S1 S2
D
S1 S2
D