Fnc224~230 - Ld =, >, <, <>, <=, >= / Data Comparison - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
28.1 FNC224~230 – LD =, >, <, <>, <=, >= / Data Comparison
Outline
These instructions compare numeric values, and set a contact to ON when the condition agrees so that an operation is
started.
1. Instruction format
FNC 224
D
LD=
FNC 225
D
LD>
FNC 226
D
LD<
FNC 228
D
LD<>
FNC 229
D
LD<=
FNC 230
D
LD>=
2. Set data (common among FNC224 to FNC230)
Operand Type
S
1
S
2
3. Applicable devices (common among FNC224 to FNC230)
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS
S
1
S
2
: This function is supported only in FX
656
Mnemonic
16-bit Instruction
5 steps LD=
Mnemonic
16-bit Instruction
5 steps LD>
Mnemonic
16-bit Instruction
5 steps LD<
Mnemonic
16-bit Instruction
5 steps LD<>
Mnemonic
16-bit Instruction
5 steps LD<=
Mnemonic
16-bit Instruction
5 steps LD>=
Device number storing comparison data
Device number storing comparison data
Digit Specification
/FX
3U
28.1 FNC224~230 – LD =, >, <, <>, <=, >= / Data Comparison
Operation Condition
32-bit Instruction
Continuous
Operation
Operation Condition
32-bit Instruction
Continuous
Operation
Operation Condition
32-bit Instruction
Continuous
Operation
Operation Condition
32-bit Instruction
Continuous
Operation
Operation Condition
32-bit Instruction
Continuous
Operation
Operation Condition
32-bit Instruction
Continuous
Operation
Description
Word Devices
Special
System User
Unit
T C D R U \G
PLCs.
3UC
28 Data Comparison – FNC220 to FNC249
Mnemonic Operation Condition
9 steps LDD=
Mnemonic Operation Condition
9 steps LDD>
Mnemonic Operation Condition
9 steps LDD<
Mnemonic Operation Condition
9 steps LDD<>
Mnemonic Operation Condition
9 steps LDD<=
Mnemonic Operation Condition
9 steps LDD>=
16- or 32-bit binary
16- or 32-bit binary
Others
Con- Real
Index
stant Number
V Z Modify K H E
Continuous
Operation
Continuous
Operation
Continuous
Operation
Continuous
Operation
Continuous
Operation
Continuous
Operation
Data Type
Charac-
Pointer
ter String
" " P