243
Communication operation and setting
4
(6) Modbus registers
System environment variable
*1
The communication parameter values are not cleared.
*2
For write, set the data as a control input instruction. For read, data is read as an inverter operating status.
*3
For write, set data as the operation mode setting. For read, data is read as the operation mode status.
Register
Definition
Read/Write
Remarks
40002
Inverter reset
Write
Any value can be written
40003
Parameter clear
Write
Set H965A as a written value.
40004
All parameter clear
Write
Set H99AA as a written value.
40006
Parameter clear
*1
Write
Set H5A96 as a written value.
40007
All parameter clear
*1
Write
Set HAA99 as a written value.
40009
Inverter status/control input instruction
*2
Read/write
See below.
40010
Operation mode/inverter setting
*3
Read/write
See below.
40014
Running frequency (RAM value)
Read/write
According to the
Pr. 37
and
Pr. 144
settings, the
frequency and selectable speed are in 1r/min
increments.
40015
Running frequency (EEPROM value)
Write
<Inverter status/control input instruction>
*1
The signal within parentheses is the initial setting. The description changes depending on the setting of
Pr. 180 to Pr. 189 (input
terminal function selection) (page124)
.
Each assigned signal is valid or invalid depending on NET.
*2
The signal within parentheses is the initial setting. The description changes depending on the setting of
Pr. 190 to Pr. 196 (output
terminal function selection) (page130)
.
Bit
Definition
Control input instruction
Inverter status
0
Stop command
RUN (inverter running)
*2
1
Forward rotation command
Forward rotation
2
Reverse rotation command
Reverse rotation
3
RH (high speed operation command)
*1
SU (up to frequency)
*2
4
RM (middle speed operation command)
*1
OL (overload)
*2
5
RL (low speed operation command)
*1
IPF (instantaneous power failure)
*2
6
JOG (Jog operation)
*1
FU (frequency detection)
*2
7
RT (second function selection)
*1
ABC1 (fault)
*2
8
AU (current input selection)
*1
ABC2 (
⎯
)
*2
9
CS
(selection of automatic restart after
instantaneous power failure)
*1
0
10
MRS (output stop)
*1
0
11
STOP (start self-holding)
*1
0
12
RES (reset)
*1
0
13
0
0
14
0
0
15
0
Fault occurrence
<Operation mode/inverter setting>
*
Writing is available depending on the
Pr. 79
and
Pr. 340
setting. Refer to
for details.
The restrictions depending on the
operation mode changes according
to the computer link specifications.
Mode
Read
Value
Written
Value
EXT
H0000
H0010 *
PU
H0001
H0011 *
EXT
JOG
H0002
⎯
PU
JOG
H0003
⎯
NET
H0004
H0014
PU+
EXT
H0005
⎯
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