Mitsubishi Electric FR-CC2-P, Instruction Manual

Page: 119 / 184

(N) Operation via communication and its settings
118
PARAMETER
5.7.3
Initial settings and specifications of RS-485
communication
NOTE
• Always reset the converter after making the initial settings of the parameters. After changing the communication-related
parameters, communication cannot be made until the converter is reset.
Use the following parameters to perform required settings for the RS-485 communication between the converter unit
and a personal computer.
• Use the PU connector of the converter unit.
• Parameter setting, monitoring, etc. can be performed using the Mitsubishi inverter protocol.
• To make communication between the personal computer and the converter unit, initial setting of the communication
specifications must be made to the converter unit in advance.
Data communication cannot be made if the initial settings are not made or if there is any setting error.
Pr. Name
Initial
value Setting
range
Description
117
N020 PU communication
station number
0 0 to 31
Specify the converter unit station number.
Set the converter unit station numbers when two or more
converter units are connected to one personal computer.
118
N021 PU communication
speed
192
48, 96, 192,
384, 576, 768,
1152
Set the communication speed.
The setting value

100 equals the communication speed.
For example, if 192 is set, the communication speed is
19200 bps.
N022
PU communication data
length
0
0 Data length 8 bits
1 Data length 7 bits
N023
PU communication stop
bit length
1
0 Stop bit length 1 bit
1 Stop bit length 2 bits
119
PU communication stop
bit length / data length
1
0 Stop bit length 1 bit
Data length 8 bits
1 Stop bit length 2 bits
10 Stop bit length 1 bit
Data length 7 bits
11 Stop bit length 2 bits
120
N024 PU communication parity
check
2
0 Without parity check
1 With odd parity
2 With even parity
121
N025 Number of PU
communication retries
1
0 to 10
Set the permissible number of retries for unsuccessful data
reception. If it is still unsuccessful after the permissible
number of retries, the inverter will trip.
9999
The inverter will not trip even when the communication is
unsuccessful.
122
N026 PU communication
check time interval
9999
0 PU connector communication is disabled.
0.1 to 999.8 s
Set the interval of the communication check (signal loss
detection) time.
If a no-communication state persists for longer than the
permissible time, the inverter will trip.
9999 No communication check (signal loss detection)
123
N027 PU communication
waiting time setting
9999
0 to 150 ms
Set the waiting time between data transmission to the
converter unit and the response.
9999 Set with communication data.
124
N028 PU communication CR/
LF selection
1
0 Without CR/LF
1 With CR
2 With CR/LF