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Initial Settings And Specifications Of Rs-485 Communication (pr. 117 To Pr. 124) - Mitsubishi Electric FR-HC2-7.5K Instruction Manual

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3.4.22 Initial settings and specifications of RS-485 communication (Pr. 117 to Pr. 124)

This function is used to perform required settings for RS-485 communication between the converter and personal
computer.
Use PU connector of the converter for communication.
You can perform parameter setting, monitoring, etc. using Mitsubishi inverter protocol.
To make communication between a personal computer and a converter, initialization of the communication
specifications must be made to the converter.
Data communication cannot be made if the initial settings are not made or there is any setting error.
[Parameters related to PU connector communication]
Parameter
Name
Number
117
PU communication station number
118
PU communication speed
119
PU communication stop bit length
120
PU communication parity check
Number of PU communication
121
retries
PU communication waiting time
123
setting
124
PU communication CR/LF selection
NOTE
 Always reset the converter after making the initial settings of the parameters. After you change the communication-
related parameters, communication cannot be made until the converter is reset.
Initial
Setting Range
Value
Converter station number specification
0
0 to 31
Set the converter station numbers when two or more
converters are connected to one personal computer.
Set the communication speed.
The setting value  100 equals the communication
192
48, 96, 192, 384
speed.
For example, if 192 is set, the communication speed is
19200bps.
0
1
1
10
11
0
Without parity check
2
1
With parity check at odd numbers
2
With parity check at even numbers
Set the permissible number of retries for unsuccessful
data reception. If it is still unsuccessful after the
0 to 10
permissible number of retries, the converter stops
1
retrying communication.
The converter does not retry communication even when
9999
the communication is unsuccessful.
Set the waiting time between data transmission to the
0 to 150ms
9999
converter and the response.
9999
Set with communication data.
0
Without CR/LF
1
1
With CR
2
With CR/LF
Description of parameters
Description
Stop bit length
Data length
1bit
8 bits
2 bits
1bit
7 bits
2 bits
3
97

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