E-76
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
7 Creating Programs (FX2N, FX2NC)
7.2 Common Items in Inverter Communication Instructions
7.2
Common Items in Inverter Communication Instructions
7.2.1
Inverter communication types (EXTR K10 to K13)
An FX
2N
and FX
2NC
PLC and inverter execute communication using EXTR (FNC180) instruction.
EXTR instruction can be described in four types of methods, from "EXTR K10" to "EXTR K13", depending on
the data communication direction and parameter writing/reading direction.
7.2.2
Function and operation
1. Communication start timing
At the rising edge (OFF
ON) of the drive condition, the PLC starts communication with an inverter.
Even if the drive condition turns OFF during communication with an inverter, the PLC executes
communication until the end.
When the drive condition is always ON, the PLC executes communication repeatedly.
2. Simultaneous driving of EXTR instructions and communication processing
1) Driving instructions at the same time
- Two or more EXTR functions (K10 to K13) can be programmed, and driven at the same time.
- When two or more instructions are driven at the same time during communication, the next EXTR
instruction in the program is executed after the current communication with an inverter is finished.
Instruction
Function
number (S)
Function
Control direction
Detailed
explanation
EXTR(FNC180)
K10
Monitors inverter operations
PLC
inverter
7.3
K11
Controls inverter operations
PLC
inverter
7.4
K12
Reads inverter parameters
PLC
inverter
7.5
K13
Writes inverter parameters
PLC
inverter
7.6
FNC180
EXTR
Function
number
Inverter station
number
Inverter
instruction code
Read/
Write
S
S
1
S
2
S
3
Only EXTR (16-bit type) is applicable.
DEXTR (32-bit type), EXTRP (pulse type)
and DEXTRP (32-bit pulse type) are not
applicable.
Read value storage
destination or value written
to inverter
M8000
FNC180
EXTR
FNC180
EXTR
FNC180
EXTR
(1)
(2)
(3)
M8155
ON
OFF
M8155
ON
OFF
M8155
ON
OFF
RUN
monitor
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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