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Multiple inverter commands
This instruction writes 2 types of settings (operation command and set frequency) to the inverter, and reads 2 types of data
(inverter status monitor, output frequency, etc.) from the inverter at the same time.
For information concerning inverter communication instruction expressions and execution format, refer to MELSEC iQ-F
FX5 Programming Manual (Instructions, Standard Functions/Function Blocks).
IVMC
Ladder
(s1)
(s2)
(s3)
Setting data
■Contents, range, data type
Operand
Description
(s1)
Inverter station number
(s2)
Multiple instructions for inverter: Send/receive data type
specification
(s3)
Head device of a parameter data to be written to an inverter
(d1)
Head device which stores values to be read from the inverter
*1
(n)
Used channel
*2
(d2)
Head bit device number to which instruction execution status is
output
*1 Specify a channel No. for which communication setting is set for inverter communication.
*2 Make sure not to use devices being used in other control operations. (Page 121)
■Applicable devices
Operand
Bit
X, Y, M, L, SM,
F, B, SB, S
(s1)
(s2)
(s3)
(d1)
(n)
(d2)
*1 T,ST and C cannot be used
Processing details
This instruction executes multiple commands to an inverter connected to the communication channel (n) whose station
number is specified in (s1). Specify the send/receive data type using (s2), the head device which stores data to be written to
the inverter using (s3), and the head device which stores values to be read from the inverter using (d1).
ST
ENO:=IVMC (EN, s1, s2, s3, n, d1, d2);
(d1)
(n)
(d2)
Word
T, ST, C, D, W,
U\G
SD, SW, R
*1
*1
*1
Range
Data type
K0 to 31
16-bit signed binary
Refer to the following
16-bit signed binary
16-bit signed binary
16-bit signed binary
K1 to 4
16-bit unsigned binary
Bit
Double word Indirect
specification
Z
LC
LZ
FBD/LD
EN
ENO
s1
s2
s3
n
Data type (label)
ANY16
ANY16
ANY16_ARRAY
(Number of elements:2)
ANY16_ARRAY
(Number of elements:2)
ANY16_U
ANYBIT_ARRAY
(Number of elements:3)
Constant
K, H
E
$
5 INVERTER COMMUNICATION
5.8 Programming
d1
d2
5
Others
137
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