Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Parameter Communication operation and setting
FR-A700 EC 6 - 445
6.23.3 Initial settings and specifications of RS-485 communication (Pr. 117 to
Pr. 124, Pr. 331 to Pr. 337, Pr. 341, Pr. 549)
There are two basic types of communications between the inverter and personal computer:
●
communication using the PU connector of the inverter
●
communication using the RS-485 terminals
You can perform parameter setting, monitor, etc. from the PU connector or RS-485 terminals of
the inverter using the Mitsubishi inverter protocol (computer link communication).
To make communication between the personal computer and inverter, initialization of the
communication specifications must be made to the inverter. Data communication cannot be
made if the initial settings are not made or there is any setting error.
PU connector communication related parameter
Pr. No. Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
117
PU communication
station number
0 0–31
Specify the inverter station number.
Set the inverter station numbers when
two or more inverters are connected
to one personal computer.
—
118
PU communication
speed
192
48/96/
192/384
Set the communication speed.
The setting value × 100 equals the
communication speed.
For example, the communication
speed is 19200bps when the setting
value is "192".
119
PU communication stop
bit length
1
Stop bit length Data length
0 1bit
8bit
1 2bit
10 1bit
7bit
11 2bit
120
PU communication
parity check
2
0 Without parity check
1 With odd parity check
2 With even parity check
121
Number of PU
communication retries
1
0–10
Set the permissible number of retries
at occurrence of a data receive error. If
the number of consecutive errors
exceeds the permissible value, the
inverter will come to an alarm stop.
9999
If a communication error occurs, the
inverter will not come to an alarm
stop.
122
PU communication
check time interval
9999
0 No PU connector communication
0.1–999.8s
Set the interval of communication
check time.
If a no-communication state persists
for longer than the permissible time,
the inverter will come to an alarm
stop.
9999 No communication check
123
PU communication
waiting time setting
9999
0–150ms
Set the waiting time between data
transmission to the inverter and
response.
9999 Set with communication data.
124
PU communication
CR/LF presence/absence
selection
1
0 Without CR/LF
1 With CR
2 With CR/LF