Communication functions (Pr. 117 to Pr. 124)
To make communication between the personal computer and inverter, the initial settings 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.
Always reset the inverter after making the initial settings of the parameters. Communication is disabled
unless the inverter is reset after the communication-related parameter values have been changed.
Stop bit length/
* When making communication, set any value other than 0 in Pr. 122 "communication check time interval".
Station number specified for communication from the PU connector.
0 to 31
Set the inverter station numbers when two or more inverters are
connected to one personal computer.
Stop bit length 1 bit
Stop bit length 2 bits
10 Stop bit length 1 bit
11 Stop bit length 2 bits
Odd parity present
Even parity present
Set the permissible number of retries at occurrence of data receive
0 to 10
error. If the number of consecutive errors exceeds the permissible
value, the inverter will come to an alarm stop (E. PUE).
If a communication error occurs, the inverter will not come to an alarm
stop. At this time, the inverter can be coasted to a stop by MRS or
During a communication error (H0 to H5), the minor fault signal (LF) is
given to the open collector output. Allocate the used terminal with any
of Pr. 190 to Pr. 192 and Pr. 195 (output terminal function selection).
Set the communication check time [s] interval.
If a no-communication state persists for longer than the permissible
time, the inverter will come to an alarm stop (E. PUE).
Communication check suspension
Set the waiting time between data transmission to the inverter and
Set with communication data.