37
450-XXXX-X Series
Computer
PIN Number
Description
PIN Number
Description
Not used
7
Not used
8
Not used
9
Table 33. RS232 interface definition
5-2. RS232 Port Operating
The following steps show the connection among inverter and
computer.
Step 1 Connect the RS232 port to the
450-XXXX-X Series
unit
on the fron
t panel
Step 2 Run the computer communication program
Step 3 Set the transmission protocol
Byte structure: START-BIP – 8 BIT DATA-STOP BIT
Baud rate: 4800
Step 4 Select the COM port and start the operation
5-3. Example of RS232 Port Operating
5-3-1. RS232 command format
This unit uses high-level language commands starts with CR
(0DH) and LF(0AH) as the end of the command, The system
would interpret and execute the command only after these
two characters are received. After the unit executes the
command, it would send a response string to the computer
The response string is as follows:
=> CR LF: Command executed successfully
?> CR LF: Command error, not accepted
! > CR LF: Command correct but execution error (e.g.
parameters out of range)
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