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30 Applied Instructions (External Device Communication)
30.3 IVRD / Inverter Parameter Read
715
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
21
Applied Instructions
(Real Time
Clock Control)
22
Applied Instructions
(External Device)
23
Applied Instructions
(Extension
Function)
24
Applied Instructions
(Others)
25
Applied Instructions
(Block Data
Operation)
26
Applied Instructions
(Character
String Control)
27
Applied Instructions
(Data Operation 3)
28
Applied Instructions
(Data Comparison)
29
Applied Instructions
(Data Table
Operation)
30
Applied Instructions
(External Device
Communication)
Function and operation explanation
→ For detailed explanation of the instruction, refer to the Data Communication Edition manual.
1. 16-bit operation (IVRD)
The value of the parameter in the device specified by is read from an inverter connected to a
communication port n whose station number is in the device specified by , and output to the device
specified by .
2. Related devices
→ For the instruction execution complete flag use method, refer to Section 1.3.4.
*1. Cleared when PLC power supply is turned from OFF to ON.
*2. Cleared when the PLC mode switches from STOP to RUN.
*3. Initial value: -1
Cautions
→ For other cautions, refer to the Data Communication Edition manual.
1) The instruction is provided in the FX3G PLC Ver. 1.10 or later.
2) It is not permitted to use an "IVCK, IVDR, IVRD, IVWR, IVBWR
*1
or IVMC" instruction and a following
instruction for the same port:
- "RS or RS2" instruction
- "ADPRW" instruction
-"FLCRT
*1
, FLDEL
*1
, FLWR
*1
, FLRD
*1
, FLCMD
*1
or FLSTRD
*1
" instruction
3) Two or more inverter communication instructions (IVCK, IVDR, IVRD, IVWR, IVBWR
*1
and IVMC) can be
driven for the same port at the same time.
4) Some restrictions to applicable devices
S1: The FX
3G, FX3GC, FX3U and FX3UC PLCs only are applicable.
S2: The FX
3U and FX3UC PLCs only are applicable.
*1. The instruction is not provided in the FX
3S, FX3G and FX3GC PLCs.
PLC applicable version
The table below shows PLC versions applicable to each inverter.
Number
Description
Number
Description
ch1 ch2 ch1 ch2
M8029 Instruction execution complete D8063 D8438
Error code of serial communication error
*1
M8063 M8438
Serial communication error
*1
D8150 D8155
Response wait time in inverter communication
*1
M8151 M8156 Inverter communicating D8151 D8156
Step number in inverter communication*
3
M8152 M8157
Inverter communication error
*2
D8152 D8157
Error code of inverter communication error
*1
M8153 M8158
Inverter communication error latch*
2
D8153 D8158
Latch of inverter communication error occurrence
step
*2*3
M8154 M8159
IVBWR instruction error*
2
D8154 D8159
IVBWR instruction error parameter number
*2*3
PLC FREQROL-V500/F500/A500/E500/S500 FREQROL-F700/A700 FREQROL-E700/D700
FX3S Ver.1.00 or later
FX3G Ver.1.10 or later
FX3GC Ver.1.40 or later
FX3U Ver.2.20 or later Ver.2.32 or later
FX3UC Ver.1.00 or later Ver.2.20 or later Ver.2.32 or later
IVRD
EN ENO
d
s1
s2
n
Command
input
Inverter station number
Inverter parameter number
Channel to be used
Device storing the read value