9 Communications Functions
9 - 100
High-function General-purpose Inverter RX2 Series User’s Manual
*3. To switch the master inverter among more than one inverter, be sure to set sequential station numbers. If the
set station numbers include any skipped number, communications cannot be established.
*4. For the management inverter, set the station number to 1 (CF-02= 1).
*5. When the Operation Selection on Communication Error (CF-05) is set to 02 (Ignore) on the management
inverter, the co-inverter communication session will stop if a communications timeout error occurs on the man-
agement inverter. In this case, cycle the power supply of the management inverter.
*6. Set these parameters so that CF-20 is equal to or less than CF-21.
*7. Assign 98 (EzCom start) to any of input terminals 1 to 9, A and B (CA-01 to CA-11) when you set 00 (EzCom
terminals) in Inverter Communication Start Selection (CF-22).
*8. When the Co-inverter Communication Start Selection is set to 01 (Constant communication), the management
inverter starts sending data as soon as the power supply is turned on. At this time, if the next master inverter
is delayed in the startup and cannot receive the master switching command, the master inverter cannot send
the data, which results in a communications timeout error on the management inverter.
When you set CF-22 to 01, check that the startup of the other inverters is completed and power on the man-
agement inverter finally.
*9. Although, in master-to-slave communications, you set recipient slave’s station number, actually, data is sent
to all stations via broadcast communications (Station No. 00). Slaves that are not specified as the recipient on
the master side discard the received data.
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