5.1 Standard RS-485 Communications Ports
5-11
Chap. 5 USING STANDARD RS-485
5.1.7 RS-485 function codes
Function code Data setting Remarks
H31
RS-485 setting
(station address)
0 to 255
1 to 247: RTU
1 to 31: Fuji general-purpose
Specify station number when connecting to
inverter
No response returned when Broadcast is
selected
0: Broadcast when RTU selected
99: Broadcast when Fuji general-purpose
selected
H32
RS-485 setting
(error measure selection)
0; Forced stop
1; Stop after fixed time
2; Stop after error continues longer than
operation time
3; Continue operation
H33
RS-485 setting
(timer time)
0.01 to 20.00 s
RAS
H34
RS-485 setting
(transmission rate)
0; 38,400 bps
1; 19,200 bps
2; 9,600 bps
3; 4,800 bps
4; 2,400 bps
H35
RS-485 setting
(data length selection)
0; 8 bit
1; 7 bit
H36
RS-485 setting
(parity bit selection)
0; None
1; Even
2; Odd
H37
RS-485 setting
(stop bit selection)
0; 2 bit
1; 1 bit
Default communications setting
H38
RS-485 communication
downtime
0.1 to 60.0 s
0.0; disabled
H39 Response interval time 0.00 to 1.00 s
H40 RS-485 protocol selection
0; Fuji general-purpose
1; SX protocol (loader protocol)
2; Modbus RTU
Protocol switching
5.1.7.1 Response interval time (H39)
Set the time until the inverter returns a response when a request is received from an upper level
device such as a computer. This function enables you to match the timing by setting the response
interval time, even if the computer processes slowly.
T1 = response interval time + Td (inverter operation delay time; 0-30 ms).
Use the H39 code to set the time within the range of 0.00-1.00 s.
Request
Response 1
Request
Response 2
T1
T1
Master (PC, etc.)
FRENIC-VG
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