Initial Settings And Specifications Of Rs-485 Communication (Pr.117 To Pr.120, Pr.123, Pr.124, Pr.549) - Mitsubishi Electric FR-E700EX Instruction Manual

Communication operation and setting
4.18.2 Initial settings and specifications of RS-485 communication
(Pr.117 to Pr.120, Pr.123, Pr.124, Pr.549)
Used to perform required settings for RS-485 communication between the drive unit and personal computer.
Use PU connector of the drive unit for communication.
You can perform parameter setting, monitoring, etc. using Mitsubishi inverter protocol or Modbus-RTU protocol.
To make communication between the personal computer and drive unit, initialization of the communication
specifications must be made to the drive unit.
Data communication cannot be made if the initial settings are not made or there is any setting error.
Parameter
number
PU communication
117
station number
118 PU communication speed
PU communication stop
119
bit length
PU communication parity
120
check
PU communication
123
waiting time
PU communication CR/LF
124
selection
549 Protocol selection
The above parameters can be set when Pr.160 Extended function display selection = "0". (Refer to page 182)
 When "1" (Modbus-RTU protocol) is set in
NOTE
 Always reset the drive unit after making the initial settings of the parameters. After you have changed the
communication-related parameters, communication cannot be made until the drive unit is reset.
204
Initial
Name
value
0
192
1
2
9999
1
0
, the setting range within parenthesis is applied.
Pr.549
Setting range
Drive unit station number specification
0 to 31
Set the drive unit station numbers when two or more
(0 to 247)
drive units are connected to one personal computer.
Communication speed
The setting value  100 equals the communication
48, 96, 192, 384
speed.
Example)19200bps if 192
Stop bit length
0
1
10
11
0 Without parity check
1 Without parity check
2 With even parity check
Set the waiting time between data transmission to
0 to 150ms
the drive unit and response.
9999 Set with communication data.
0 Without CR/LF
1 With CR
2 With CR/LF
0 Mitsubishi inverter (computer link operation) protocol
1 Modbus-RTU protocol
Description
Data length
1 bit
8 bit
2 bit
1 bit
7 bit
2 bit