Y Codes (Link Functions) - Fuji Electric FRENIC-HVAC User Manual

6.3.15 y codes (Link functions)

y01 to y20 RS-485 Communication 1 and 2
Up to two RS-485 communications ports are available as listed below.
Port
Port 1 RS-485 communications link
(via the RJ-45 connector prepared for
keypad connection)
Port 2 RS-485 communications link
(via terminals DX+, DX- and SD on the
control PCB)
To connect any of the applicable devices, follow the procedures shown below.
(1) Standard keypad
The standard keypad allows you to run and monitor the inverter.
It can be used independent of the y code setting.
(2) FRENIC Loader
Connecting your computer running FRENIC Loader to the inverter via the RS-485
communications link (port 1 and 2), you can monitor the inverter's running status information,
edit function codes, and test-run the inverters.
 For the setting of y codes, refer to the descriptions of y01 to y20.
FRENIC-HVAC series of inverters has a USB port.
To use the FRENIC Loader via the USB port, simply set the station address (y01 or
y20) to "1" (factory default).
(3) Host equipment
The inverter can be managed and monitored by connecting host equipment such as a PC and
PLC to the inverter. Modbus RTU, Metasys N2, BACnet and Fuji general-purpose inverter
protocol are available for communications protocols.
 For details, refer to the RS-485 Communication User's Manual.
Station address (y01 for port 1 and y11 for port 2)

y01 or y11 specifies the station address for the RS-485 communications link. The table below
lists the protocols and the station address setting ranges.
Modbus RTU protocol
SX protocol (FRENIC Loader
command protocol)
FRENIC Loader protocol
FUJI general-purpose inverter protocol
Metasys N2
BACnet
- 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 via the RS-485 communications link (port 1 and 2), set the station
address that matches the connected computer.
Route
Protocol
6-275
6.3 Details of Function Codes
Function code Applicable equipment
y01 through y10 Standard keypad
FRENIC Loader
Host equipment
y11 through y20 Inverter support loader
(FRENIC loader)
Station address Broadcast address
1 to 247
1 to 255
1 to 255
1 to 31
0 to 255
0 to 127
0
-
None
99
-
255