Common Items In Inverter Communication Instructions - Mitsubishi FX3U-USB-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
7.2

Common Items in Inverter Communication Instructions

7.2.1 Inverter communication types (EXTR K10 to K13)
An FX /FX PLC and inverter execute communication using EXTR (FNC180) instruction.
2N 2NC
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.
FNC180
EXTR
Instruction
EXTR(FNC180)
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.
M8000
RUN
monitor
S S S
1
Function
Inverter station Inverter
number
number instruction code
Only EXTR (16-bit type) is applicable.
DEXTR (32-bit type), EXTRP (pulse type)
and DEXTRP (32-bit pulse type) are not
applicable.
Function
number (S)
K10 Monitors inverter operations
K11 Controls inverter operations
K12 Reads inverter parameters
K13 Writes inverter parameters
FNC180
EXTR
FNC180
EXTR
FNC180
EXTR
7 Creating Programs (for FX2N and FX2NC PLCs)
7.2 Common Items in Inverter Communication Instructions
S
2 3
Read/
Write
Read value storage
destination or value written
to inverter
Function
Detailed
Control direction
explanation
PLC ← inverter
7.3
PLC → inverter
7.4
PLC ← inverter
7.5
PLC → inverter
7.6
(1)
M8155
ON→OFF
M8155
(2) ON→OFF
M8155
ON→OFF
(3)
E-63
A
B
C
D
E
F
G
H
I
Apx.