E-104
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
9 Creating Programs (FX3S, FX3G, FX3GC, FX3U, FX3UC)
9.4 Inverter Operation Monitoring Instruction (PLC
Inverter) [FNC270 / IVCK]
9.4 Inverter Operation Monitoring Instruction
(PLCInverter) [FNC270 / IVCK]
The IVCK instruction reads the operation status of an inverter to the PLC.
9.4.1 Function and operation
When an "instruction code" specified for computer link operation in the inverters is specified in the IVCK
(FNC270) instruction, a value in the inverter is read to .
1. Applicable devices
1: Only available for FX3G, FX3GC, FX3U and FX3UC PLCs.
2: Only available for FX3U and FX3UC PLCs.
2. Program example
9.4.2 Inverter instruction codes
The table below shows inverter instruction codes which can be specified in . Any instruction codes not
shown in the table below may cause communication errors. Use only instruction codes shown below.
For the instruction codes, refer to the pages explaining computer link in detail in each inverter manual.
*1. Please write "0" to instruction code HFF (Link parameter expansion setting) just before the IVCK
instruction when reading frequency.
When "0" is not written, reading of the frequency may not be executed normally.
Oper-
and
Type
Bit Devices Word Devices Others
System/User Digit Specification System/User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
V Z Modify K H E "
"P
1 2
1 2
1 2
n
Inverter Instruction
code (hexadecimal)
Read contents
Applicable inverter
F800, A800, F700,
A700, E700, D700
V500 F500, A500 E500 S500
H7B Operation mode
H6F Output frequency [speed]
*1
H70 Output current
H71 Output voltage —
H72 Special monitor ——
H73 Special monitor selection No. ——
H74 Alarm definition
H75 Alarm definition
H76 Alarm definition —
H77 Alarm definition —
H79
Inverter status monitor (expansion)
————
H7A Inverter status monitor
H6E Set frequency read (E2PROM)
*1
H6D Set frequency read (RAM)
*1
H7F Link parameter expansion setting
These codes cannot be specified in of the IVCK
instruction. They are automatically processed when a
"second parameter specification code" is specified the
IVRD instruction.
H6C Second parameter changing
D
M0
FNC270
IVCK
K6 H6F D100
S
1
S
2
D
Command
contact
Inverter station number: 0 to 31 Inverter instruction code (hexadecimal)
Read value storage destination
K1
n
Communication channel K1:ch1
K2:ch2
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