9.2 Details of Function Codes
9-59
Chap. 9 FUNCTION CODES
H30 Communications Link (Function selection)
This function enables the inverter to be managed (i.e. to monitor the operation status or data set
in the function codes, to set the drive frequency and to manage the operation commands) from a
personal computer or PLC via RS-485 communication. To select information in the inverter
that is to be accessible via RS-485 communication, set each data to function code H30 as shown
in the table below. "N" represents information that cannot be accessed via by RS-485
communication, but by commands from the terminals.
Refer to Chapter 4 "BLOCK DIAGRAMS FOR CONTROL LOGIC" and the RS-485
Communication User's Manual for details.
Function
Data for H30
Monitoring Frequency setting Operation command
Remarks
0 Y N N
1 Y Y N
2 Y N Y
3 Y Y Y
Y: Possible
N: Not possible
- Assign the terminal command (LE) to one of terminals [X1] to [X3] using function codes E01
to E03 to enable/disable the function specified by code H30 by terminal command, and
short-circuit between the terminal assigned for (LE) command and [CM]. To disable the
function, open the circuit ((LE) = OFF). When (LE) is set to OFF, the inverter enters the
operation mode where the commands and frequencies given by the terminals or keypad are
effective.
H42 Capacity of DC Link Bus Capacitor
This function code is used to clear the information related to the DC link bus capacitor if it is
replaced. Follow the instructions for replacement.
H43 Accumulated Run Time of Cooling Fan
This function code is used to clear the information related to the cooling fan if it is replaced.
Follow the instruction for the replacement.
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