Mitsubishi Electric MELSEC FX3U - FNC280 - HSCT; High Speed Counter Compare with Data Table

748
FX3G/FX3U/FX3UC 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 a data table of comparison points,
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 data table shown below
which has (3±m) points stored in and later, and the operation output set value (ON or OFF) specified
in the data table is output to to +n-1.
Operand Type Description Data Type
Head device number storing the data table 16- or 32-bit binary
m Number of comparison points in data table [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 Bit
n Number of devices to which the operation status is output [1 ≤ n ≤ 16] 16-bit binary
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
XYMTCSD
 .b KnX KnY KnM KnS T C D R U\G VZModifyKH E "  "P
33 3
m
33
S 3
33 3 3
n
33
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  nS 2 
Command
input