702
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
32 High Speed Processing 2 – FNC280 to FNC289
32.1 FNC280 – HSCT / High Speed Counter Compare With Data Table
32.1
FNC280 – HSCT / High Speed Counter Compare With Data Table
Outline
This instruction compares the current value of a high speed counter with preliminarily prepared data tables,
and then sets or resets up to 16 output devices.
1. Instruction format
2. Set data
3. Applicable devices
Only a high speed counter C235 to C255 can be specified in "
S
".
Explanation of function and operation
1. 32-bit operation (DHSCT)
The current value of a high speed counter specified in
is compared with the table data shown below
which has (3
×
m) comparison points and is stored in
and later, and then the output status (ON or OFF)
specified in the data table is output to
to
+n-1.
Operand Type
Description
Data Type
Head device number storing a data table
16- or 32-bit binary
m
Number of data tables (number of comparison points) [1
≤
m
≤
128]
16-bit binary
High speed counter number (C235 to C255)
32-bit binary
Head device number to which the operation status is output
16-bit binary
n
Number of devices to which the operation status is output [1
≤
n
≤
16]
Bit
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3 3
3
m
3 3
S
3
3 3
3
3
n
3 3
FNC 280
HSCT
D
Mnemonic
Operation Condition
16-bit Instruction
21 steps
DHSCT
Mnemonic
Operation Condition
Continuous
Operation
32-bit Instruction
⎯
⎯
⎯
S
1
S
2
D
S
1
S
2
D
S
2
S
1
D
D
FNC280
DHSCT
S
1
m
D
n
S
2
Command
input