681
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
30 External Device Communication (Inverter Communication) – FNC270 to FNC274
21
FN
C
160-FN
C
169
R
eal
Ti
m
e
C
loc
k
C
ont
ro
l
22
FN
C
170
-F
N
C
17
9
E
xt
e
rnal
D
evi
ce
23
FN
C
180
Su
b
st.
I
n
str
. I
n
fo
24
FN
C
181-FN
C
189
O
ther
s
25
FN
C
190-FN
C
19
9
B
loc
k D
a
ta
O
per
at
io
n
26
FN
C
200-FN
C
209
C
har
act
e
r St
ring
C
ont
ro
l
27
F
N
C2
10
-F
NC
21
9
Da
ta
O
per
at
ion 3
28
FN
C
220-FN
C
24
9
Da
ta
Co
m
p
a
ris
o
n
29
FN
C
250-FN
C
269
Da
ta
T
a
b
le
O
per
at
io
n
30
FN
C
27
0-F
N
C
274
Ex
-D
ev
ic
e
In
ve
rte
r C
o
mm
s
30. External Device Communication
(Inverter Communication) – FNC270 to FNC274
FNC270 to FNC274 provide instructions for controlling operations and reading/writing parameters while two
or more FREQROL inverters are connected.
FNC No.
Mnemonic
Symbol
Function
Reference
270
IVCK
Inverter Status Check
Section
30.1
271
IVDR
Inverter Drive
Section
30.2
272
IVRD
Inverter Parameter Read
Section
30.3
273
IVWR
Inverter Parameter Write
Section
30.4
274
IVBWR
Inverter Parameter Block Write
Section
30.5
n
IVCK
D
S2
S1
n
IVDR
S3
S2
S1
n
IVRD
D
S2
S1
n
IVWR
S3
S2
S1
n
IVBWR
S3
S2
S1