Hitachi HIDIC MICRO-EH Applications Manual page 148

Item number Application instructions-25
Ladder format
DIST (d, s, n)
Instruction format
DIST (d, s, n)
Usable I/O
Distribution result write
d
destination head I/O
s I/O to be distributed
Number of words to be
n
distributed
Function
•
Distributes s into four bit sections and sets to the lower four bits of the n words starting from d.
•
The upper 12 bits of the range d to d + n – 1 will be "0."
•
The value of s will be retained even if DIST is executed.
•
Use this instruction so that d + n - 1 does not exceed the I/O range (WRFFF and WM3FF). If it exceeds the I/O range, DER
is equal to '1' and the distribution data for s will be set in the lower four bits within the range between d and the I/O.
When n = 4:
d 0 0
d+1
0 0
d+2
0 0
d+3
0 0
Notes
•
When n=0, it is not executed.
n
0
1
2
3
4
Name
Condition code
R7F4 R7F3 R7F2
DER ERR SD
↕
Number of steps
Condition
Bit
R, TD, SS,
X Y M CU, CT WX WY
Upper digits
s
B4 B3
4 bits
B1
B2
B3
B4
Processing time (µs)
Average Maximum
62
–
87 –
90
–
92 –
94 –
5-98
Chapter 5 Instruction Specifications
Distribute
Processing time (µs)
R7F1 R7F0
Average Maximum
V C
As per the table
below.
Steps
4
Word Double word
WR, DR,
WM TC DX DY DM
Lower digits
B2 B1
Remark
Other
n=0 to 4