Mitsubishi Electric FR-A700 Series, Техническое руководство, Страница: 434 / 550

468
PARAMETER
1) [ Pr. 343 Communication error count ]
You can check the cumulative number of
communication errors by reading [
Pr. 343 ]. The
number of communication errors is temporarily
stored into the RAM.
As it is not stored into the EEPROM, performing a
power supply reset or inverter reset clears the
value to 0.
2) Output signal LF alarm output (communication
error warnings)
During a communication error, the alarm signal
(LF signal) is output by open collector output.
Assign the used terminal with any of [
Pr. 190 to Pr.
196 Output terminal function selection ].
(6) Modbus registers
z System environment variable
Alarm data
Reply data
Master
Slave
0
Signal LF
Normal data Alarm data Alarm data
1 2
OFF
ON
OFF OFF
ON
Not increased
Turns OFF when normal data is received
Alarm data :
Normal data
Reply data
Communication error count is increased in
synchronization with leading edge of LF signal
Data resulting in
communication error.
Communication
Error count
[ Pr. 343 ]
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, Pr. 144 ] settings, the
frequency and selectable speed are in
1r/min increments.
40015 Running frequency (EEPROM value) Write
*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.
*1 The signal within parentheses is the default setting. Descriptions change according to the [ Pr. 180 to Pr. 189 Input terminal
function selection
].
Each assigned signal is valid or invalid depending on NET. (Refer to page 440)
*2 The signal within parentheses is the default setting. Descriptions change according to the [ Pr. 190 to Pr. 196 Output terminal
function selection ].
*3 These are not available for .
*4 These are not available for .
<Inverter status/control input instruction>
Bit
Definition
Control input instruction Inverter status
0
Stop command RUN (inverter running) *2
1 Forward rotation command Forward running
2
Reverse rotation command Reverse running
3
RH (high speed command)
*1
SU (up-to-frequency)
*2
4
RM (middle speed command) *1 OL (overload) *2
5 RL (low speed command)
*1
IPF (instantaneous power failure)
*2*3*4
6
JOG (Jog operation selection) *1*3*4 FU (frequency detection) *2
7 RT (second function selection)
*1
ABC1 (fault)
*2
8
AU (current input selection) *1 ABC2 (—) *2*3*4
9
CS (selection of automatic restart
after instantaneous power failure)
*1*3*4
0
10 MRS output stop
*1
0
11
STOP (start self-holding)
*1*3*4
0
12 RES (reset)
*1*4
0
13
0 0
14 0 0
15
0 Fault occurrence
E700
D700
The restrictions depending on the operation
mode changes according to the computer
link specifications.
<Operation mode/inverter setting>
Mode Read Value
Written
Value
EXT
H0000 H0010
PU H0001 —
EXT
JOG
H0002 —
PU
JOG
*4
H0003 —
NET H0004 H0014
PU+
EXT
H0005 —