Mitsubishi MELSEC-Q series Programming Manual page 164

S.MID
Set Data Set Data
(1) Data specified in S.MID instruction
Specified position Symbol
n
+0
S1
+1
E1
+2
Input
+3
E2
data
+4
+2
n-1
E
n
+2n
+0
D1
BW
+1
BB
Block
memory
BB1
+2
to
BB16
*1 The data of the item(s) where the values within the recommended range are given in the parentheses are stored by the
system. Users cannot set the data.
Set Data
Processing contents
(1) Middle value selector processing
The middle value of the input values 1 (E1) to n (En) is stored into BW.
Also, any of BB1 to BB16 of BB corresponding to the middle value is turned to 1.
Input value
Bit turned to 1 at middle value
(a) If there are an even number of inputs, the smaller value of the middle values is stored.
(b) If there are two or more middle values, the bits corresponding to the middle values are all turned to 1.
Remark
The middle value is selected as described below.
(1) The input value 1 (E1) to input value n (En) are rearranged in order of increasing value.
(If there are the same input values, they are arranged in order of increasing input number.)
(2) The middle value among the rearranged values is selected.
Example) When the input data are 2, 5, 1, 4 and 3, the middle value is selected as described below.
E1 E2
2
In the above case, the middle value is "3" and BB5 turns to 1.
162
Name
Recommended range
Input count 1 to 16
Input value 1
Input value 2
-999999 to 999999
Input value n
(Middle value between maximum value and
Output value
minimum value)
b15 b12
B B B B B
B B B B B
16 15 14 13 12
Output
selection (0: The corresponding input value is not the
intermediate value)
(1: The corresponding input value is the
intermediate value)
E16 E15
BB16 BB15
Input data
E3 E4 E5 Rearrangement
5 1 4 3
*1
––
b8 b4 b0
B B B B B B B B B B B
B B B B B B B B B B B
11 10 9 8 7 6 5 4 3 2 1
E14 to
BB14 to
Rearranged data
E3 E1 E5 E4 E2
1 2 3 4
Standard
Unit Data format
value
BIN
–– ––
16bit
Real
–– ––
number
Real
–– ––
number
BIN
–– ––
16bit
E2 E1
BB2 BB1
5
Set
by
U
U
S
S