Omron MX2 Series User Manual page 446

8 Communications Functions
*2. After changing any of the C072 and C096 to C100 data on the management inverter, be sure to cycle the power
supply to apply the changes. For inverters other than the management inverter, these changes will be applied
immediately.
*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 (C072 = 1).
*5. When the Operation Selection on Communication Error (C076) is set to 02 (Ignore) on the management invert-
er, the co-inverter communication session will stop if a communications timeout error occurs on the manage-
ment inverter. In this case, cycle the power supply of the management inverter.
*6. Set these parameters so that C098 is equal to or less than C099.
*7. When the Co-inverter Communication Start Selection (C100) is set to 00 (Start via 485 terminal), set one of
the Multi-function Input S1 to S7 Selection (C001 to C007) to 81 (Start co-inverter communication).
*8. When the Co-inverter Communication Start Selection (C100) is set to 01 (Constant communication), the man-
agement 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 C100 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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Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)