3.4.22 Initial settings and specifications of RS-485 communication (Pr. 117 to Pr. 124). Mitsubishi Electric Marine Battery FR-HC2, FR-HC2-7.5K, FR-HC2, FR-HC2-H7.5K

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Description of parameters

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

Number

Name

Initial

Value

Setting Range

117

118

119

120

121

123

124

PU communication station number

PU communication speed

PU communication stop bit length

PU communication parity check

Number of PU communication retries

PU communication waiting time setting

PU communication CR/LF selection

Description

0

1

2

1

9999

1

0 to 31

192 48, 96, 192, 384

0

1

10

11

0

1

2

0 to 10

9999

0 to 150ms

9999

0

1

2

Converter station number specification

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 speed.

For example, if 192 is set, the communication speed is

19200bps.

Stop bit length

1bit

8 bits

Data length

2 bits

1bit

7 bits

2 bits

Without parity check

With parity check at odd numbers

With parity check at even numbers

Set the permissible number of retries for unsuccessful data reception. If it is still unsuccessful after the permissible number of retries, the converter stops retrying communication.

The converter does not retry communication even when the communication is unsuccessful.

Set the waiting time between data transmission to the converter and the response.

Set with communication data.

Without CR/LF

With CR

With CR/LF

NOTE

 Always reset the converter after making the initial settings of the parameters. After you change the communicationrelated parameters, communication cannot be made until the converter is reset.

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