(N) Operation via communication and its settings
Mitsubishi inverter protocol (computer link communication)
Parameter settings and monitoring are possible by using the Mitsubishi inverter protocol (computer
link communication) via inverter PU connector and the RS-485 terminals.
The communication specifications are given below.
Waiting time setting
Tab. 5-268: Communication specifications
Data communication between the computer and inverter is made in the following procedure.
³ Request data is sent from the computer to the inverter. (The inverter will not send data unless
· After waiting for the waiting time,
" The inverter sends reply data to the computer in response to the computer request.
¿ After waiting for the inverter data processing time,
´ An answer from the computer in response to reply data (") of the inverter is transmitted.
(Even if (´) is not sent, subsequent communication is made properly.)
5 - 612
Mitsubishi protocol (computer link)
1:N (maximum 32 units), setting is 0 to 31 stations
Selected among 4800/9600/19200/38400 bps
Selected among 300/600/1200/2400/4800/9600/19200/38400/
ASCII (7 bits or 8 bits can be selected.)
Stop bit length
1 bit or 2 bits can be selected.
Check (at even or odd numbers) or no check can be selected.
Sum code check
CR/LF (presence/absence selectable)
Selectable between presence and absence
Schematic diagram of data exchange
When data is read
When data is written