• The communication specifications are given below.
Number of connectable units
Character system ASCII (7 bits or 8 bits can be selected.)
Stop bit length
Waiting time setting
• Data communication between the computer and inverter is made in the following procedure.
Request data is sent from the computer to the inverter. (The inverter will not send data unless requested.)
Communication waiting time
The inverter sends reply data to the computer in response to the computer request.
Inverter data processing time
An answer from the computer in response to reply data (c) of the inverter is transmitted. (Even if (e) is not sent, subsequent
communication is made properly.)
If a data error is detected and a retry must be made, perform retry operation with the user program. The inverter output is shut off if the number
of consecutive retries exceeds the parameter setting.
On receipt of a data error occurrence, the inverter returns reply data (c) to the computer again. The inverter output is shut off if the number of
consecutive data errors reaches or exceeds the parameter setting.
Communication operation presence/absence and data format types
• Data communication between the computer and inverter is made in ASCII code (hexadecimal code).
5.15 (N) Communication operation parameters
Mitsubishi inverter protocol (computer link communication)
1: N (maximum 32 units), the setting range of station number is 0 to 31.
Selected among 4800/9600/19200/38400/57600/76800/115200 bps.
Selected among 300/600/1200/2400/4800/9600/19200/38400/57600/76800/
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 (whether or not to use it can be selected)
Availability of the setting is selectable.
↓ (Data flow)
↓ (Data flow)
When data is read
When data is written