E-99
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
9 Creating Programs (FX3S, FX3G, FX3GC, FX3U, FX3UC)
9.3 Common Items in Inverter Communication Instructions
A
Comm
on I
te
ms
B
N:
N N
etwo
rk
C
Paral
le
l Li
nk
D
Com
puter Li
nk
E
In
verter
C
omm
uni
cation
F
N
on-Proto
col
C
ommunicati
on
(R
S/RS
2 Instru
ction
)
G
No
n-
Protoc
ol
Co
mmuni
ca
tion
(FX
2N
-2
32IF)
H
Programm
ing
Comm
uni
cation
I
Re
mo
te
Ma
intenance
Apx.A
D
isco
nti
nued
models
- The PLC waits for 15 ms after acquiring the communication port, and then starts communication using
inverter communication instructions. Even if the drive condition turns ON, the PLC does not start
execution of an inverter communication instruction until the communication port busy flag M8151 turns
OFF from ON, if M8151 is already set to ON by another inverter communication instruction.
The PLC frees the communication port, and then executes inverter communication instructions driven in
the next step and so on.
*1.
The PLC does not execute the instruction even if M8151 is turned OFF because the drive contact is
OFF.
*2.
When two or more instructions are driven at the same time during communication, the next inverter
communication instruction is executed after the current instruction is completed.
*3.
M8151 remains OFF until the next inverter communication instruction is driven after execution of the
current inverter communication instruction is completed.
2) Cautions on programming
When communicating with inverters for two or more items, let the drive contact for inverter
communication instruction remain ON until sending is completed. After communication with all inverters is
completed, set the drive contact to OFF using the instruction execution complete flag M8029.
3. Communication complete flag (M8029)
When communication with an inverter is completed, the instruction execution complete flag M8029 turns ON,
and remains ON for 1 scan.
For the M8029 use method, refer to program examples shown below.
M0
M1
FNC273
IVWR
FNC270
IVCK
M0
M1
M8151
15ms
15ms
15ms
15ms
15ms
IVWR
IVCK
IVCK
IVWR
IVWR
IVWR
instruction
(Communicating)
IVCK
instruction
(Communicating)
*1
*2
*2
*3
*3
X001
SET
M0
Command is
latched
RST
M0
M8029
Instruction execution
complete
FNC274
IVCK
M0
Communication is
executed
Command is
reset
Summary of Contents for FX-485ADP
Page 2: ......
Page 120: ...B 2 FX Series PLC User s Manual Data Communication Edition N N Network ...
Page 188: ...C 2 FX Series PLC User s Manual Data Communication Edition Parallel Link ...
Page 244: ...D 2 FX Series PLC User s Manual Data Communication Edition Computer Link ...
Page 344: ...E 2 FX Series PLC User s Manual Data Communication Edition Inverter Communication ...
Page 700: ...H 2 FX Series PLC User s Manual Data Communication Edition Programming Communication ...
Page 752: ...I 2 FX Series PLC User s Manual Data Communication Edition Remote Maintenance ...
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