9.2 Details of Function Codes
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Chap. 9 FUNCTION CODES
9.2.8 y codes (Link functions)
y01 to y10 RS-485 Communication
(1) Remote keypad (option)
The remote keypad allows you to run and monitor the inverter.
Those keypads can be used independent of the y code setting.
(2) FRENIC Loader
Connecting your PC running FRENIC Loader to the inverter via the RS-485 communications
links (port 1), you can monitor the inverter’s running status information, edit function codes,
and test-run the inverter.
For the setting of y codes, refer to function codes y01 to y10. For details, refer to the
FRENIC Loader Instruction Manual.
(3) Host equipment
The inverter can be managed and monitored by connecting the host equipment such as a PC
and PLC to the inverter. Modbus RTU* and Fuji general-purpose inverter protocol are
available for communications protocols.
*Modbus RTU is a protocol established by Modicon, Inc.
For details, refer to the RS-485 Communication User's Manual (MEH448).
Station address (y01)
y01 specifies the station address for the RS-485 communications link. The table below lists
the protocols and the station address setting ranges.
Protocol Station address Broadcast address
Modbus RTU protocol 1 to 247 0
FRENIC Loader protocol 1 to 255 None
FUJI general-purpose inverter protocol 1 to 31 99
- If any wrong address beyond the above range is specified, no response is returned since the
inverter will be unable to receive any enquiries except the broadcast message.
- To use FRENIC Loader, set the station address that matches the connected PC.
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