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30 Applied Instructions (External Device Communication)
30.6 IVMC / Inverter Multi Command
721
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
21
Appl
ied
 In
stru
cti
ons 
(R
eal
 T
im
C
lock
 Contr
ol)
22
Ap
plied
 Instru
ctio
ns 
(E
xt
er
na
l De
vi
ce
)
23
App
lied Instr
ucti
ons 
(Ex
tensi
on 
Functi
on)
24
Ap
pl
ied In
struct
ions 
(O
thers)
25
Appl
ied
 Instru
cti
ons
 
(B
lock
 Dat
O
per
at
io
n)
26
App
lie
d Instr
uction
(Charac
ter 
Stri
ng C
ontrol
)
27
Ap
pl
ied Inst
ruct
io
ns 
(D
ata
 Op
eration 3
)
28
Appl
ied
 In
stru
cti
ons 
(D
ata C
om
par
ison
)
29
App
lie
d Instr
uction
(D
ata
 T
abl
O
peration
)
30
Appli
ed In
struc
tions
(E
xt
ernal Devi
ce 
Comm
uni
cat
ion)
30.6
IVMC / Inverter Multi Command
Outline
This instruction writes 2 types of settings (operation command and set frequency) to the inverter, and reads
2 types of data (inverter status monitor, output frequency, etc.) from the inverter at the same time.
→ For detailed explanation of the instruction, refer to the Data Communication Edition manual.
1. Format and operation, execution form
2. Set data
*1.
"ch2" is not available for use for the FX
3S
 and FX
3G
 (14-point and 24-point type) PLCs.
3. Applicable devices
S: Refer to "Cautions".
FX
3U(C)
FX
3G(C)
FX
3S
FX
2N(C)
FX
1N(C)
FX
1S
FX
U
/FX
2C
FX
0N
FX
0(S)
Instruction 
name
Operation
Execution 
form
Expression in each language
Structured ladder/FBD
ST
IVMC
16 bits
Continuous
IVMC(EN,s1,s2,s3,n,d);
Variable
Description
Data type
Input variable
EN
Execution condition
Bit
Inverter station number (K0 to K31)
ANY16
Multiple instructions for inverter: Send/receive data type specification
ANY16
Head device which stores data to be written to the inverter 
(Occupies 2 points.)
ARRAY[0..1]
OF ANY16
Channel to be used (K1: ch1, K2: ch2
*1
)
ANY16
Output
variable
ENO
Execution state
Bit
Head device which stores values to be read from the inverter 
(Occupies 2 points.)
ARRAY[0..1]
OF ANY16
Operand 
type
Bit Devices
Word Devices
Others
System user
Digit specification
System 
user
Special 
unit
Index
Cons
tant
Real 
Number
Character 
String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS T C D R U
\G
V Z Modifier K H
E
"
"
P
z
S1
S2
z
z z
z
S1
S2
z
z z
z
S1
S2
z
z z
z
S1
S2
z
IVMC
EN
ENO
d
s1
s2
s3
n