Communication settings
Make the communication settings of the inverter.
Be sure to perform the inverter reset after updating each parameter.
(1) Communication port and corresponding parameters
GOT connection | Parameters corresponding to inverter | |
destination | ||
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PU connector | Pr.79, Pr.117 to Pr.124, Pr.340, Pr.342, Pr.549 | |
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(2)Communication settings of inverter
Set the following parameters using the PU (parameter unit). Set Pr.160 (User group read selection) to 0 [The simple mode and extended parameters can be displayed] before making the parameter settings.
Do not change these parameters, even though they can be monitored from the GOT. If they are changed, communication with the GOT is disabled.
Setting item*1 | Parameter No. | Set value |
| Contents of setting | |
PU communication station number | Pr.117 | 0 to 31 |
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PU communication speed*2 | Pr.118 | 192*3 |
| 19200bps | |
PU communication stop bit length | Pr.119 | 10 |
| Data length: 7bit | |
| Stop bit length: 1bit | ||||
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PU communication parity check*2 | Pr.120 | 1 |
| Odd | |
Number of PU communication retries | Pr.121 | 9999 | The inverter will not come to an | ||
| alarm stop. | ||||
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PU communication check time interval | Pr.122 | 9999 |
| Communication check | |
| suspension | ||||
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PU communication waiting time setting | Pr.123 | 0 |
| 0ms | |
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PU communication CR/LF selection | Pr.124 | 1*3 |
| With CR, without LF | |
Protocol selection | Pr.549 | 0*3 |
| Mitsubishi inverter protocol | |
Operation mode selection | Pr.79 | 0*3 | External operation mode at | ||
power on | |||||
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Communication startup mode selection | Pr.340 | 1 |
| Network operation mode. | |
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Communication EEPROM write selection | Pr.342 | 0*3 |
| Written to RAM and EEPROM | |
*1 Setting items are parameter names described in the manual of
*2 Settings on the GOT can be changed.
When changing the settings on the GOT, be sure to change the parameters on the inverter to correspond with the GOT settings.
*3 Inverter default values (No need to change)
HINT 
Automatic setting with Pr.999
If Pr.999 is set as the following, the communication settings other than [PU communication station number] and [Communication EEPROM write selection] can be automatically set in a batch to the default communication settings of the GOT side.
| Parameter No. | Set value | Description | Operation in parameter setting mode |
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| Pr.999*1 |
| 10 | GOT Initial settings (PU connector) | [AUTO] [GOT] [1]Write |
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*1 | When monitoring the value of Pr.999, 9999 is always monitored. | |||||
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15 - 40 | 15. INVERTER CONNECTION |
| 15.5 FREQROL Series Inverter Side Settings |