Mitsubishi Electric MELSEC FX Series - Page 291

7 Applied Instructions
7.6 High Speed Processing
289
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
1
Outline
2
Instruction List
3
Configuration of Instruction
4
How to Read Explanation of Instructions
5
Basic Instruction
6
Step Ladder Instructions
7
Applied Instructions
8
Interrupt Function and Pulse Catch Function
A
Relationships between devices and addresses
Function and operation explanation
1. 32-bit operation (DHSZ)
The current value of the high speed counter of the device specified by is compared with two comparison
points (comparison value 1 and comparison value 2). Based on the comparison result, "smaller than the lower
comparison value", "inside the comparison zone" or "larger than the upper comparison value", one among the
devices specified by is set to ON regardless of the operation cycle.
In this instruction, the comparison processing is executed after the count processing in the high speed
counter.
Comparison points
Make sure that the comparison value 1 and the comparison value 2 have the following relationship:
≤
Operation
When the current value of the high speed counter C251 changes (counts) as shown below, the comparison
result is output to one of the outputs Y000, Y001 or Y002.
Comparison pattern Current value of C251
Change of output contact (Y)
Y000 Y001 Y002
>
1000>
ON OFF OFF
999→1000 ON→OFF OFF→ON OFF
999←1000 OFF→ON ON→OFF OFF
≤≤
999→1000 ON→OFF OFF→ON OFF
999←1000 OFF→ON ON→OFF OFF
1000≤≤2000
OFF ON OFF
2000→2001 OFF ON→OFF OFF→ON
2000←2001 OFF OFF→ON ON→OFF
<
2000→2001 OFF ON→OFF OFF→ON
2000←2001 OFF OFF→ON ON→OFF
>2000
OFF OFF ON
Command input
Label
*1
Label
*2
Comparison source
Output
destination
DHSZ
EN
s1
s2
ENO
d
s
+1
+2
Set to ON
ds1
s2
s
d
d
s
s
s1
s2
OUT_C_32
EN
CCoil
CValue
ENO
K2,147,483,647
s
High speed counter
specified by
*1. This defines the comparison value 1.
*2. This defines the comparison value 2.
>
>
≤≤
Y000
Y001
Y002
K1000 C251 K2000
K1000 C251
C251 K2000
ON
*1. This defines K1000.
*2. This defines K2000.
DHSZ
EN
s1
s2
ENO
d
s
OUT_C_32
EN
CCoil
CValue
ENO
K2,147,483,647
M8000
RUN
monitor
CC251
Y0Label 1
*1
Label 2
*2
C251
>
>
≤≤