Instructions For The Program - Mitsubishi Electric 800 Series Instruction Manual

4.4.8

Instructions for the program

• When data from the computer has any error, the inverter does not accept that data. Hence, in the user program, always
insert a retry program for data error.
• All data communication, for example, run command or monitoring, are started when the computer gives a communication
request. The inverter does not return any data without the computer's request. Hence, design the program so that the
computer gives a data read request for monitoring, etc. as required.
• For the program example, refer to the description on the RS-485 communication via the PU connector in the Instruction
Manual (Detailed) of the inverter.
General flowchart
46
PARAMETER
Port open
Communication setting
Time out setting
Send data processing
Data setting
Sum code calculation
Data transmission
Receive data waiting
Receive data processing
Data retrieval
Screen display