Mitsubishi Inverter Protocol (Computer Link Communication) - Mitsubishi Electric 800 Series Instruction Manual

3.4
Mitsubishi inverter protocol (computer link
communication)
Parameter setting and monitoring, etc. are possible by using the Mitsubishi inverter protocol (computer link communication) via
the PU connector on the inverter.
Pr.
117 PU communication
N020 station number
118 PU communication
N021 speed
PU communication
N022
data length
PU communication
N023
stop bit length
PU communication
119 stop bit length / data
length
120 PU communication
N024 parity check
121 PU communication
N025 retry count
122 PU communication
N026 check time interval
123 PU communication
N027 waiting time setting
124 PU communication CR/
N028 LF selection
*1 When a value outside the setting range is set, the inverter operates at the initial value.
NOTE
• Always reset the inverter after making the initial settings of the parameters. After changing the communication-related
parameters, communication cannot be made until the inverter is reset.
 Communication specifications
• The communication specifications are shown in the following table.
Item
Communication protocol
Conforming standard
Number of connectable units
Communication speed
Control procedure
Communication method
130
3. RS-485 Communication

3.4 Mitsubishi inverter protocol (computer link communication)

Name Initial value
0
192
0
1
1
2
1
0
9999
1
Mitsubishi inverter protocol (computer link communication)
EIA-485 (RS-485)
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.
Asynchronous method
Half-duplex system
Setting
range
Specify the inverter station number.
*1
Enter the inverter station numbers when two or more inverters are
0 to 31
connected to one personal computer.
48, 96, 192, Select the communication speed.
384, 576, The setting value × 100 equals the communication speed.
768, 1152 For example, enter 192 to set the communication speed of 19200 bps.
0 Data length 8 bits
1 Data length 7 bits
0 Stop bit length 1 bit
1 Stop bit length 2 bits
0 Stop bit length 1 bit
1 Stop bit length 2 bits
10 Stop bit length 1 bit
11 Stop bit length 2 bits
0 Parity check disabled.
1 Parity check (odd parity) enabled.
2 Parity check (even parity) enabled.
Set the permissible number of retries for unsuccessful data reception.
0 to 10 If the number of consecutive errors exceeds the permissible value, the
inverter output will be stopped.
The inverter output will not be shut off even when a communication
9999
error occurs.
0 PU connector communication is disabled.
Set the interval of the communication check (signal loss detection)
0.1 to 999.8 time
s If a no-communication state persists for longer than the permissible
time, the inverter output will be shut off.
9999 No communication check (signal loss detection)
Set the time delay between data transmission to the converter and the
0 to 150 ms
response.
The time delay is not set in this parameter but in communication data.
9999
Delay time: Number set in the data × 10 ms
0 Without CR/LF
1 With CR
2 With CR/LF
Description
Description
Data length 8 bits
Data length 7 bits
Related parameter
Pr.549
—
Pr.117
Pr.118
—
—