Hitachi HIDIC MICRO-EH Applications Manual page 55

Ladder symbol
32
s1
<
s2
s1
<
s2
s1
<
s2
33
s1
S<
s2
s1
S<
s2
s1
S<
s2
34
s1
<=
s2
s1
<=
s2
s1
<=
s2
35
s1
S<=
s2
s1
S<=
s2
s1
S<=
s2
*1: In the case of word, it requires five steps for LD (s1 s2) and AND (s1 s2), and six steps for OR (s1 s2).
*2: In the case of double word, for LD (s1 s2) and AND (s1 s2), it requires five steps when the combination of s1 and s2 is I/O
and I/O, six steps when the combination is either I/O and constant or constant and I/O, and seven steps when the combination
is constant and constant. For OR (s1 s2), one step is added respectively.
Instruction
Process descriptions
name
When s1 < s2: Continuity
LD < Relational
(s1< box When s1 ≥ s2:
s2)
Noncontinuity
AND
(s1<
s2)
OR
(s1<
s2)
When s1 < s2: Continuity
LD Signed <
(s1 Relational When s1 ≥ s2:
S< box
Noncontinuity
s2)
s1 and s2 are compared as
signed 32-bit binary.
AND
(s1
S<
s2)
OR
(s1
S<
s2)
When s1 ≤ s2:
LD <=
(s1 Relational Noncontinuity
<= box When s1 > s2: Continuity
s2)
AND
(s1
<=
s2)
OR
(s1
<=
s2)
When s1 ≤ s2: Continuity
LD Signed <=
(s1 Relational When s1 > s2:
S<= box
Noncontinuity
s2)
s1 and s2 are compared as
signed 32-bit binary.
AND
(s1
S<=
s2)
OR
(s1
S<=
s2)
Chapter 5 Instruction Specifications
I/O types used
DER ERR SD
[Word]
WX, WY, WR,
WM,
Timer Counter
[Double word]
DX, DY, DR,
DM
Constant
DX, DY, DR,
DM
Constant
[Word]
WX, WY, WR,
WM,
Timer Counter
[Double word]
DX, DY, DR,
DM
Constant
DX, DY, DR,
DM
Constant
5-5
Process
time
Remarks
(µ s)
MICRO-EH
V C
26.8 5 *1
6 *2
7 Upper
8 case: W
37.5 Lower
case: DW
37.5 5 *2
6
7
8
26.8 5 *1
6 *2
7 Upper
8 case: W
42 Lower
case: DW
37.5 5 *2
6
7
8